Always check engine compression either BEFORE or RIGHT AFTER purchasing an older Mercedes diesel (before is better of course! Engine exhaust is toxic.‪ Check fuel level and correct if necessary. Diesel engines are not like the petrol engines as they do not use any spark ignition system or plugs or electric wiring to start the combustion. For 1986 to 1989 190D 2.5 and 1990 to 1993 300D 2.5, NEW! This is suitable to add to the engine oil, when restored to clean condition. Keep in mind that the engine will need to turn over quickly in order to build that much compression. Some of these conditions can be related to the fuel system.‪ 4.1 Engine Will Only Start Using An External Priming Source. Failing Solenoid. If your car won’t start, it’s important to note what’s happening, when you turn the key. This technical question wins the grand prize! At the same time, battery output drops, reducing the number of amps available to crank the engine. Low Compression Low compression in your diesel engine will prevent heat from being produced to ignite fuel and causes hard starting. Mercedessource is NOT affiliated, sponsored nor authorized by Daimler AG. Contact Us. Others can be time-consuming and could be expensive. First, identify the problem you've encountered with your engine, then rule out each potential cause. For more information on a diesel that’s hard to start give the team a call on +61 7 3376 6188 Each plug is getting 12.4V. MONARK NOZZLES BACK IN STOCK -- FROM FACTORY IN GERMANY!!! If you notice a sulfuric odor or a black or green coating in the fuel tank, this is the most likely culprit for a gummed up fuel system. Because heat is necessary to start a diesel truck, the process for starting it is different than starting a gas engine. This is usually seen more in the colder months especially if the battery is run down. If you are having trouble with your truck engine, diesel engine troubleshooting tips can be handy to get you off the side of the road and to a shop. At the hourly shop prices, it pays off to try to troubleshoot simple engine problems. If the engine takes more than 4 seconds to start, there is a problem. 1975 to 1979 5 cylinder non-turbo models - PDF Digital Instructions included! Just smiled and said, no. The warmer the temperatures outside, the better and faster the bacteria grows. Only fits 6 cylinder 1986 to 1987 300SDL, 300D and 300TD with GARRET TURBO!!! Reason. Anyway it turns out the Government has switched from regular diesel to bio diesel. Common source of undiagnosed lack of power issues. You should NEVER use ether on a diesel that has another starting aid like glow plugs or a intake pre-heater (toaster!). They simply use air compression to burn the fuel. Coolant Based Fuel Warmer . Whenever you start the engine in cold condition,its just fires up right away. This is usually a problem with high mileage or older diesel vehicles. This is my problem Long Crank Times Hard start, long crank times, usually when cold but sometimes hot, runs for a few seconds after start and then clears up and runs smoothly, or engine sounds different or louder under load, or makes crackling sort of sound. Select Engine Series or Model. There is some poor advice on this thread regarding using ether to start this engine. To get rid of it, you'll need to drain and clean the fuel tank, using a biocide to clean. Troubleshooting Guide: Engine doesn’t start (Fuel system, for both petrol and diesel): Let's look at the common problems and solutions in fuel system when the engine doesn't start. Gud day, hoping to find a solution here to my td27 diesel engine. Fuel System Checks for No or Hard Starting. This is an especially likely culprit if the engine dies. GM installed the 6.2 L diesel engine in light trucks and Sport Utility Vehicles between 1981 and 1993. Do not be afraid to try. Clogged fuel filters. OM 603 1986 to 1987 Garrett T3 Turbocharger Basic Overhaul Kit, 5 Cylinder 617 300D 300TD 300SD Physical Exam Kit, 4 Cylinder 220D 240D Physical Exam Kit - Check Engine Health. Check the Health of your Diesel Engine Yourself - Save BIG $$$, For adjustable valve clearances on 190D 200D 220D 240D 300D 300CD 300TD 300SD 1961 to 1985. In a diesel truck, the fuel and air must get hot enough to create combustion, which then creates the spark to start the engine. Before doing any troubleshooting, check the shift lever position. DD15 Fuel System Technician's Guide - DDC-SVC-MAN-0037: Generated on 10-13-2008: Posted in DD15 Engine Post navigation. Top problems for diesel owners. If you can get it to start it runs fine. Troubleshooting Procedures and Techniques . Whether it is hard starting or shut down, rough running, excess smoking, poor power output, or poor mileage, often times it can be more than one of these things. Correct pressure should be maintained in the cylinder chamber in order for proper combustion to occur. Find the solution. Keep in mind that the engine will need to turn over quickly in order to build that much compression. Not to mention engine damage. Engine Hard to Start Engine is cold. Engine oil viscosity too heavy. This is not a difficult job - but BEFORE you begin you will need some essential tools and supplies on hand. But, paying attention early, may steer you down the right path, to a easy repair. You see, unlike petrol engines that use electric wiring or spark plugs to start combustion, diesel engines use air compression. Share. What can you do? Check for air in the fuel. Now let’s look into how to start a diesel in the cold. We think we found the problem with the engines. This is particularly so during the cold season. If troubles persist after checking the possible causes listed or you are unable to identify the problem, call KOHLER Engines Customer Service at 1-800-544-2444 or contact your local KOHLER dealer. If the issue isn't solved with a new fuel filter and you have noticed the problem worsening gradually on a higher-mileage vehicle, it may be time to replace the pump. It's been suggested to me that the EGR might be clogged up, so I'm purchasing a diesel fuel additive designed to clean the EGR, valves and injectors. NOTE: A hard start/no start concern with EOT Temp. Diesel Engine Advanced Fault Diagnostic Manual by Kent Bergsma. But after running for lets say 8mins or more… Diagnose your problem. If that is so, then it is a completely different problem than an engine that cranks over at a good speed but does not want to fire. You're not just another car or number or dollar in the bank to, Finally, A place a woman can trust to fix her car! Air in fuel system. Failing Lead-Acid Storage Batteries. Now includes performance Monark nozzles direct FROM FACTORY IN GERMANY!!! !To watch PART 2 of this video please click here !!! GENUINE MERCEDES PART. This is not a difficult job - but BEFORE you begin you will need some essential tools and supplies on hand. My audi has the same problem would be bit hard to start on cold mornings and bit smokey but be's easy to start the rest of the day I was told I need my EGR value clean so am getting it done in next few days will let use know if it help my car or not – user14108 Jan 7 ... Diesel engine starting / first start of the day problems. F-Super Duty/Excursion 2003 6.0L Power Stroke Diesel Engine Hard Start/No Start Diagnostic Guide 6005E 6005E6 6005E 6005E 6005E7 6005E8 6005E4 6005E3 6005E2 6005E5 0 20 40 60 80 100 120 140 0 20 40 60 80 100 120 140 EOT (F) Time (seconds) 6005E3 Are…, copyright © 2021 All In The Wrist Auto and Diesel Repair, Not only is Mollie amazing at what she does, but she is the most genuine, friendly person. asked Jun 5 '13 at 21:48. (Can only be shipped UPS Ground), Alternative to expensive factory preglow relay on 1980 to 1993 diesels W116 W123 W126 W201 W124 and W140. When asked what makes heat in the combustion chamber, most techs will reply “proper compression” or “proper glow plug operation.” These are great answers, but when I’m faced with this question, I always start with the proper cranking speed. 5: FINISH UP WITH ADVANCED TROUBLESHOOTING. We drained the tank and sure enough the nastiest slime you would ever see. Hard-start and no-start complaints are a common issue with Ford 6.0L diesel engines, and experienced techni-FORD POWER STROKE DIESEL NO-START DIAGNOSIS Fig. When you refill the fuel tank, add a bit more biocide to prevent the bacteria from returning. A good Yanmar diesel engine can have close to 600psi. A special 32 pt. More often than not it turns out to be a combination of maintenance neglect that has built up over the years. Molly and her gang of car fixers, This is an amazing place to take your car. Car hard to start problems are not a life-threatening malfunction, but these can be irritating and make getting around difficult.Think about jumping into your car, turning the key in the ignition, but it just cranks a few time. !! We have so many resources to help you will diesel engine performance problems we can not list them all here. WORKDS ON FUEL TANK SENDING UNITS TOO! Since two went down we started to suspect a common problem. Cold start system not being used, or malfunctioning. Clean the battery connection if the engine will not turn over. If you have a low battery or a weak starter you might not be able to get the engine spinning fast enough to start. 4.2 Fuel System Checks for No or Hard Starting. GM installed the 6.2 L diesel engine in light trucks and Sport Utility Vehicles between 1981 and 1993. My diesel engine/genset has not been used for over a year and it won't start - what's wrong and what should I do? For 240 1977 to 1979 with series glow plugs. First, the oil in the crankcase thickens. mercedessource Product - Assuming your engine has good compression and has the proper fuel in the tank! This will be help you narrow down the problem or problems you are having without wasting time or spending unnecessary money. Normal wear and usage can cause a hard start condition due to lack of fuel pressure, poor intake air management, false readings to the car's computer or weak spark. If your main goal in life was to destroy diesel fuel pump injectors, you’d run your car with the fuel tank as close to empty as possible. To be sure you've found the problem and to be sure it is fixed properly, ask the experts at All in the Wrist Auto and Diesel Repair. Assuming that the shift lever was not the problem, start the troubleshooting wit… Plugged fuel filter. Insufficient fuel supply. 601 602 603 and 606 Diesel Injection Pump Delivery Valve Seal Replacement Kit . Plugged fuel filter. See an Authorized Repair … In this video Kent will walk you through the step-by-step procedures he uses when diagnosing and repairing an older Mercedes diesel engine that either won't start or is very difficult to start. Loose or corroded electrical connections. Dirty or faulty fuel injectors. Improve this question. Here are 5 key things you can do to help you narrow down the source of your engine performance problems and fix them yourself. If this is a diesel you have recently purchased or one that you have no maintenance records for, I would highly recommend that you begin your fuel injection troubleshooting by removing and inspecting the fuel injectors. Stale or improper fuel. Machined short for easier access and a sharper edge for better grip, For 5 cylinder Garrett turbos on 300SD 300D 300CD and 300TD 1978 to 1985. Replace with diesel fuel. Detroit Diesel Series 71 Marine Diesel Engines TROUBLESHOOTING TIPS - HARD STARTING Information obtained from General Motors Diesel Series 71 - Maintenance and Overhaul Manual for 3 / 4 / 6 Cylinder Propulsion Units - Litho in the USA Reprint 6-52 Check for any obstructions in the tank that could be blocking the flow of fuel to the engine. If the engine still doesn’t start, the neutral safety may have failed, and it might be necessary to temporarily bypass this switch to get the engine started. A Yanmar diesel with around 400psi will become very hard to start. GENUINE OEM FUEL TANK SCREEN -- ALL AFTERMARKET BRANDS DISCONTINUED. How To Troubleshoot Why a 6.2 Diesel Engine Will Not Start by William Boyce . Get a quote on glow plugs and glow plug relays by clicking on live chat or or alternatively use this contact form and we will get back to you ASAP. Step 2. Kent recommends starting with the basics. How Can You Troubleshoot Starting Problems on a Ford Ranger? I was stranded in Albuquerque and this shop not only fixed the one leak I had but also. Glow plugs or relay faulty The engine relies on the glow plugs to generate heat to help with the combustion cycle. If the click is missing, the likely problem is the solenoid. Open fuse. If the fuel meter doesn’t work properly or is faulty, you may not know if there is enough fuel to start the engine. My guys asked if I wanted the stuff to put in my truck. If there is smoke coming from the exhaust it could indicate a more serious problem with the engine. This makes cranking the engine up more difficult because diesel engines depend on high temperatures in order to create combustion. By Staff Writer Last Updated Mar 30, 2020 5:57:12 PM ET. If you have a low battery or a weak starter you might not be able to get the engine spinning fast enough to start. Many boats have a safety mechanism to prevent starting the engine while in gear. It can not be easily answered without some troubleshooting on your part. 1. By keeping those basics in mind, a seemingly hard no start problem can be simplified. The fuel system is very possibly "frozen-up" because of stale "varnished" fuel. If your diesel tractor won’t start, the first place to look is the fuel filter. Remove and clean the fuel filter, or replace it altogether. 201 124 126 140 Chassis Diesel Fuel Thermostat . Starting problems If the diesel engine won’t start, but turns over quickly on the starter motor, then a fuel problem – as above – is the most likely cause. If the diesel engine won’t start, but turns over quickly on the starter motor, then a fuel problem – as above – is the most likely cause. If you notice black smoke in the exhaust, a leaky injector is likely. Remember to follow all safety precautions before starting any work on your engine. Without glow plugs, a diesel engine would not start because the engine needs hot compressed air to ignite injected diesel. Engine Misses Under Load Stale or dirty fuel. 617 Diesel Valve Cover Gasket Set of (3), Diesel Engine Compression Test Guide by Kent Bergsma. $139.00 . Watch this to help troubleshoot your hard start or no start condition on your diesel engine. 617 Turbo Diesel EGR Thermal Valve. Some causes of hard starts are cheap and simple fixes, like replacing filters. Problem: Solution: No fuel: Seriously? Drain and flush your tank immediately if you do detect gas. Fits 1977 to 1979 4 Cylinder 240D with series glow plugs - with PDF Digital Instructions! engine fuel-system starting troubleshooting audi. It's the middle of summer and your diesel engine is having trouble getting started. Very knowledgeable mechanics. However, in cold weather it’s worth checking the glow plugs: these are pre-heaters fitted to most diesel engines to warm the air in the intake to improve cold starting. Learn how to fix it yourself. Using DDDL, monitor the rail pressure while cranking the engine. Find and correct the basic cause of the problem. A brand new diesel engine running at full load will experience a little bit of blow-by upon startup. Remember to follow all safety precautions before starting any work on your engine. If the vehicle won't start at all, listen for a clicking noise when you turn the ignition switch on. Hard starting; Sometimes your diesel engine may fail to start a couple of times before finally starting. Diagnosis and treatment of engine starting difficulty or failure to start and exhaust pipe emitting a large amount of ash and white smoke. Troubleshooting Cummins Diesel Engines. If it won't start, the possible problems are a failed fuel pump or a failed crank position sensor. Unlike gasoline, diesel fuel can be an ideal environment for some bacteria. 615 616 617 Diesel Valve Adjusting Wrench Kit - Designed by Kent Bergsma - Made in the U.S.A. 4 Cyl 220D 240D 190D DIY Fuel Injector Rebuild Kit, 5 Cyl 617 Diesel Engine Fuel Injector DIY Rebuild Kit, Early Diesel Pre-glow Chamber Carbon Reamer - Designed by Kent Bergsma, 190D 200D 220D Early 240D Fast Glow Plug Upgrade w / Manual Push Button Control, E300D Diesel All Steel Glow Plug Reamer - Long Port Version, Early 300D 5 Cylinder Diesel Series to Pencil FAST Glow plug Conversion Kit, Early 123 240D 4 Cylinder Diesel FAST Pencil Glow plug Conversion Kit, 123 and 124 300TD Wagons Only and 115 Chassis Fuel Tank Screen Replacement Kit, Diesel Purge Injection System Cleaner kit with Instructions, Diesel PENCIL Glow Plug Relay Manual Override Kit, Early 300D 300CD 300TD Non-Turbo Glow Relay Manual Override Kit w/ Upgrade Plugs, 123 Chassis Early 240D 4 Cyl Glow Relay Manual Override Kit w/ Upgrade Plugs, 116 123 126 Chassis Fuel Tank Outlet Screen Removal Socket, 617 Diesel Garrett T3 Turbocharger 200K High Performance Overhaul Kit, 123 116 126 Diesel Fuel Tank Screen Removal and Replacement Kit, Diesel Glow Plug Replacement 1960 to 1985 By Kent Bergsma - Download, Diesel Injector Cleaning, Overhaul and Testing Procedures Manual - by Kent Bergsma, Diesel Engine Advanced Fault Diagnostic Manual by Kent Bergsma, 201 124 602 Diesel Engine Valve Cover Gasket, 616 617 Diesel Performance Tuning and Repair Manual by Kent Bergsma, All 61x and Some 60x Diesel Engine Compression Tester Kit With Test Guide, 200D 220D 240D 4 Cylinder Diesel Valve Cover Gasket, 4 and 5 Cylinder Diesel Fuel Filter Kit 1966 to 1976 (Code 1), 616 617 Diesel Fuel Filter Kit 1977 to 1985 (Code 2), 123 116 126 201 124 140 210 Diesel Fuel Tank Filter Screen with New Seal, 220D 240D 4 Cylinder Valve Cover Gasket Set of (3), 300D 300TD 300CD 300SD 5 Cylinder Diesel Valve Cover Gasket, 5 Cyl. Leaking Fuel Injectors – Cummins 24v. Diesel efficiency relies partly on a correct engine operating temperature, so always ensure the engine comes up to normal temperature soon after starting. Some of these repairs are simple and are included in the normal maintenance of the engine. Diesels rely on the heat of compression to ignite the fuel. Very hard to do I've checked and replaced the glowplugs. © Mercedessource.com all rights reserved 2000 - 2021. This guide describes some typical engine operating problems, their causes, and some acceptable corrections to those problems. We recommend that you follow the maintenance sequence in the order listed below. Why is there a no start/hard start problem? A Yanmar diesel with around 400psi will become very hard to start. Common Won’t Start Problem: Engine won’t fire - no fuel flow. Kent's 2019 video instructions included free of charge. Ford 6.7 Powerstroke Diesel Common Issues, Problems, and Tips. Despite the reliability of the Cummins 5.9, its fuel system is … You will be then able to find more specific information on your problem. To troubleshoot whether low compression is the problem or not, perform a cold engine compression test. Download File PDF Diesel Engine Troubleshooting Chart Diesel Engine Troubleshooting Chart When people should go to the books stores, search start by shop, shelf by shelf, it is in point of fact problematic. Unless noted otherwise, the problems listed are those which an operator can diagnose and repair. Bryan Bryan. When temperatures drop, several things happen that can make a diesel hard to start. Problem #2 –Low Fuel Tank Level. Fits 300D 300CD 300TD 300SD - Receive a Related Bonus-Product FREE! However, in cold weather it’s worth checking the glow plugs: these are pre-heaters fitted to most diesel engines to warm the air in the intake to improve cold starting. Then, … In the cold season, usually, diesel engines face difficult starting times and could not start in a normal flow as they do in warmer conditions. All that was needed to get an old diesel engine started was the proper amount of heat in the combustion chamber and the proper amount of combustible fuel, injected into the combustion chamber at the proper time. No hassle, just the truth and good work to be found here. Oxidized Oil. Based on detergents suitable for heavy deposits (rather than solvents), pristine cleanliness can be restored to the whole oil wetted side of the engine. Help Us Improve This Site. You can test the opening pressure of the injectors to see if it is too low or too high, since either way could be problematic. Use DDDL to check for stored or active codes and repair if necessary. It does reduce frictional drag throughout all lubricated mating parts of the engine, and as such will reduce the battery’s cold cranking demand. Fuel filters generally need to be changed every 20,000-40,000 miles, so if they haven't been changed recently, you may want to try this first. Follow the suggestions below to develop good troubleshooting procedures: Study the problem thoroughly before acting. I CHANGED DIESEL FILTER, PRIMER PUMP, INJECTORS & SERVICED - Nissan 2004 Frontier question December 2, 2020 by DieselIQ Leave a Comment. If the engine cranks slowly, insufficient heat will be generated and the engine will not start. The following is the best advice I could compile on starting a diesel in cold weather. a. Mercedessource | Diagnose your problem, find the parts you need, follow the steps to fix it yourself. This is why we allow the books compilations in this website. This can cause the injectors, fuel rack and the injection pump's plungers to stick and not deliver fuel. Troubleshooting Diesel Engine Hard Starting, Low Power and ... How to Troubleshoot a Tractor Diesel Engine Step 1. ), HENGST OR MAHLE BRAND FILTERS DEPENDING ON INVENTORY. The biggest result of Common rail diesel injector failure is due … Unfortunately, there is no easy solution that can work for all, hard starting engine cases. Check using a scan tool to determine whether injector timing is correct. It removes stubborn sludge, hard damaging carbon type deposits, to restore full available compression, and clean efficient lubrication … Looking like a cylindrical coil of wire, basically, solenoid is a component to bridge … I might move on to the compression and proper glow plug operation, but without the proper cranking speed, the engine compression is a moot point.Most diesel engines need a minimum cranking … Diesel cars don’t tend to be as at much of a risk of the oil oxidizing since they are used … Response from the Engine Man: When you say hard-starting (and based on the parts that you changed), I am assuming that the engine is cranking over slowly, or poorly. Oxidized Oil. Follow these steps to start a diesel truck. There are a number of issues that can go wrong with starting system and make your 2008 Peugeot Bipper Tepee car won’t start or hard time to start – This article guides you through some of the facts behind the starting system, and the components that may be to blame, and tells you what action you can take to try to remedy each situation. Hard starting is a sign of low compression or fuel delivery problems. Solution: Fuel filters. Use our solutions finder or refined search box to search for a solution to one problem at a time. 7. Difficulty Level: 1. ZD30 ENGINE. This will likely solve your problem. Socket is REQUIRED but is NOT included - … Move the lever in and out of gear a few times and try again. This article will help diagnose the underlying causes of diesel engine smoke. If all steps have been followed and a starting difficulty condition still exists, call the Detroit Diesel Customer Support Center at 313–592–5800 for help and to … When … 1995 to 1999 604 605 606 Engines - Custom made by Mercedessource, Fits 1975 to 1979 5 Cylinder 300D 300CD 300TD - Better starting performance. The engine is difficult to start, and the exhaust pipe discharges a large amount of gray smoke, which is diesel vapor. Check as follows:‪ ENGINE EXHAUST ‪ To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area. The pressure in a diesel injector is generally quite high compared with gasoline engines, but the pressure can decrease over time. Do the easiest and obvious things first. below 60F perform step 10 first. $39.50 . The 6.2 L diesel is naturally aspirated, unlike the more recent 6.5 L turbo-charged diesel. Ford introduced the 6.7 Powerstroke engine in the 2011 model year F-Series and we all wondered how the diesel engine they built completely in house would fair. The problems that can occur due to the cold weather are well-known and fairly common, such as using summer-grade fuel in winter, a bad glow plug system, slow cranking, or thick, cold oil. On the other hand, if you hear a click but no fuel is pushed through the injector lines, and nothing is clogging the lines, it's time to replace the pump. Their certified diesel specialists can help with all of your diesel maintenance and repair needs. 2400 San Mateo Pl NE, Albuquerque, NM 87110, As the snow begins to melt and spring becomes…, Are you thinking about buying a new car? The reward could be the savings of hundreds, if not thousands of dollars! The filter may be dirty, which clogs the vents and won’t allow fuel to travel to the engine from the fuel tank. If this is a diesel you have recently purchased or one that you have no maintenance records for, I would highly recommend that you begin your fuel injection troubleshooting by removing and inspecting the fuel injectors. Here are a few different issues to consider if your diesel is a hard start. For 1961 to 1979 190D 200D 220D 240D 300D 300CD 300TD with Series Style Glow Plugs. Remove the fuel filter and clean it if the engine will not turn over or start. Yes, this is true that the lead-acid batteries are the most useful … Ether combusts at a lower temperature than diesel fuel, and that means it will ignite before the piston reaches the end of the compression stroke, throwing off the timing of the combustion cycle. 6.0L diesel engine, then explain how the 6.4L fuel delivery system differs from the 6.0L. 191 1 1 gold badge 1 1 silver badge 6 6 bronze badges. All early 4 cylinder diesels 1961 to 1976 - override factory glow system -- PDF Digital Instructions included! If your glow plugs are faulty it will make your vehicle not start, hard to start or when the engine is cold produce white smoke. 6. As an owner operator, it’s useful to know some quick, easy fixes. A good Yanmar diesel engine can have close to 600psi. Auto Engine image by Andrew Breeden from Fotolia.com. There are quite a few different issues to check for if you suspect fuel delivery is the issue. 1981 to 1985 Turbo 300D 300CD 300TD and 300SD . What is wrong with my diesel engine? This speaks for itself- not enough fuel in the tank or a problem with supply … Step 3. In 2006, diesel fuel production was tweaked to compensate for ultra low sulfur diesel fuel (ULSD), and diesel engine owners have noticed more “dirty fuel” difficulties than before. There are two major kinds of starting problems with a Ford Ranger: it won't crank, or it won't start. Diesel engine smoke comes in three colors: white, black and blue. It is by far the most often asked question that we have received from our customers over the years. If other parts of the system, such as the fuel lines or injection pump, are contaminated, you'll need to clean them, as well. If the engine turns over too slowly, the pump cannot generate enough fuel pressure to activate start of injection causing hard starting problems. Smell the fuel tank for any odor of gasoline if the engine tends to run for awhile then die. Engine Hard to Start or Will Not Start (Exhaust Smoke Present), Troubleshooting Cummins Diesel Engines I have a 1985 F250 6.9L Diesel It has starting problems The engine cranks and the glow plugs work but it won't start every time.