Hello, I have a 94 F 250 7.3 Powerstroke Diesel - Direct Injection. If the temp is below 45 she does not start. I have tested the glow plug relay and replaced the glow plugs. If I plug the block heater in it will start up right away no mater how cold it is (5 degrees F is the coldest that I have tried). Any suggestions would be greatly appreciated, except that it does that because it is a Ford - I don't think that is the problem. Thank you
Gasoline engines work with a spark plug, where an electrode ignites the fuel mixture. Diesel engines operate on the principle of heat and pressure. Compression ratios are very high in diesel engines and when the air is compressed into a very confined space it heats rapidly, then the fuel is injected and combusts.
Most diesel engines have a "wait to start" light when you first turn the ignition to on. If the temp is below normal, I might would allow for a few extra seconds for the glow plugs to heat up. The block heater will help though, b/c it raises the temp on the engine and allows for it to build the heat neccesary for combustion.
I'm not big in diesel, but a thought could be to test the compression of the engine. If its not quite what it needs to be, the block heater sounds like it might assist in firing. Just an idea, don't kill me for giving an idea ;-).
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check the timing of the pump as pump timing if incorrect will cause engine failure . High rpms may be from the accelerator control not being assembled properly on installation or if ECM controlled the connection to the pump is not correct. Looking at ford diesel rpm specs , some fords run to 6500 rpms while others are at 4500 . As you have not stipulated the engine size or capacity ,it is hard to advise other than to go on line to googlr - type in ford max rpms for your engine and see what it is suppose to be
2004 f250 6.0 diesel trapped in extreme cold temps -30 plugged truck in put anti gel in added 10 more gallons of fuel. Truck will start run a few minutes and die. will not restart immediately but if wait 20 or 30 minutes it will start run few minutes and die again. Tried repeating process many times same result. Batteries now dead charging now. Can you help need truck to help others with groceries and medical needs.
C1287 is Booster pedal Force switch circuit failure U1900 deals with #11 fuse. could be plugged in wrong, symptoms with cruise control inop PO113 intake air temp circuit po675 glow plug #5 circuit failure
hope this helps. some web serches on powerstroke.org will get you alot of useful answers
white sort of smoke when cold and trying to start ,well dont panic and pull engine apart i think you just need new glow plugs thats all ,when its really cold just spray a squirt of easy start ether spray into the air intake whilst someone cranks engine and if it starts straight away then you know you need new glow plugs or the timer relay isnt working ,their is nothing wrong with the engine its just the fact that the glow plugs are down to one out of the four working if not all of them are dead and what you seeing is unburnt fuel as vapour .This is normal what you are seeing if the heater glow plugs are not working as after 40yrs i have seen this quite a lot especially with ricardo type cylinder heads (indirect injection) but you do get it with direct injection as well if the compression is down or the fuel has gelled up but you need temperatures of at least 10c below for this to happen unless the fuel has a antifreeze additive or half a gallon petrol to a tank of diesel will do the same antifreeze trick.
Sounds like the injector pump gets to hot and seizes up. it may just be an old pump. I was told years ago to put 1 quart of Automatic tranny fluid in a full tank of diesel to help lube the injector pump. I did that to my 1995 powerstroke at 130,00 miles when I had to replace the injector pump. And I have over 500,000 miles on the engine now and have not had to replace the pump since. I hope this helps please rate this
Sounds like not all the glow plugs are working.It should run fairly smooth on a cold start if all of the glow plugs are working..Also you shouldn't drive off on a cold start with a diesel,Its really hard on the motors..At least give them 10 to 15 min on a cold start..The oil in them is a really thick oil and when there drove on a cold start theres no oil lubricating the internal parts and will cause the motor to seize up..You may already no this and dont mean you drive it as soon as you start it i just wanted to let you know..When you get alot of white smoke it could be two things,Theres water in the fuel which will make it not have much power die and smoke..But if it runs fine when its warm theres some bad glow plugs...Hope this helps you and have a great day
I have a 2000 F250 with Powerstroke and my buddy has a 02 with same engine. Both of us have had the same problem. There are two coils (look like starter coils) on top of the engine that can be seen from the passenger side of the truck. The shorter of the two, has to do with supplying voltage to the glow plugs. When this coil gets older, it breaks down causing a higher resistance in the circuit. Which reduces the volts that the glow plugs see. In turn resembles a problem with the plugs. My buddy and I changed the coils and both trucks start like new. The part cost $80-$90. and can be changed in less than 5 minutes. Glow plugs are a lot bigger job and more expensive.