hard start, no start, miss when cold - Ford Powerstroke Diesel Forum
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Old 01-02-2011, 08:31 AM
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Exclamation hard start, no start, miss when cold

hey guys my 03 f350 wouldnt start this morning. i didnt plug it in last night so thats understandable. but when it is plugged in it is a little hard to start. and when the motor is cold if feels like a miss on one of the cyl. as soon as you drive it for about 1/4 mile it clears up after it warms up a little. when its warm it runs great. ive come to the conclusion that i need to replace the injector o-rings. obviously the injectors arent bad cause it runs great when warm. any help with any of these problem is appreciated.
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Old 01-02-2011, 08:56 AM
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my truck does the same thing. I figure that it is something related to the injectors but I am trying to figure out what the best/ most affordable way to fix the injector problem. I look forward to seeing the resolution from this thread
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Old 01-02-2011, 09:10 AM
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this is my first diesel so if you hear anything on it let me know. somebodys ahs to have the same problem and fixed it without reeplacing injectors. thanks for letting me know im not the only one with this problem.
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Old 01-02-2011, 10:24 AM
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well, I have already replaced my glow plug relay and all 8 glow plugs. 6 of the old glow plugs were bad (resistance test). I thought this would fix the no start problem but it didnt. The Ford dealer told me that I have 2 bad injectors, but I would think that it would start if 6 injectors are good. If it is around 40 degrees outside, it will start but it cranks for a while before it starts, then it starts really rough. also, when it does start in moderately cold weather (40 degrees) my gas pedal does nothing for the first minute that the truck runs. I can floor the pedal and the truck continues to idle. I am thinking that in the cold weather, all of the injectors are sticking closed until the truck/oil starts to warm up. FYI my truck is a 2002 and has 170,000 miles. I am reluctant to replace 2 injectors at $350 each when I am not certain that the problem will be resolved
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Old 01-02-2011, 04:21 PM
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Quote:
Originally Posted by superjoey03 View Post
hey guys my 03 f350 wouldnt start this morning. i didnt plug it in last night so thats understandable. but when it is plugged in it is a little hard to start. and when the motor is cold if feels like a miss on one of the cyl. as soon as you drive it for about 1/4 mile it clears up after it warms up a little. when its warm it runs great. ive come to the conclusion that i need to replace the injector o-rings. obviously the injectors arent bad cause it runs great when warm. any help with any of these problem is appreciated.
if its still hard after being plugged in then sounds like injector seals are shot or weak injector. perhaps all or most of your glow plugs are shot. maybe even the relay for the glow plugs. check those first since the test is free.
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Old 01-02-2011, 08:41 PM
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superjoey03 thanks for starting this, because my 03 f350 started good at 60 degrees,. the next day it was 20 degrees it would not start until i plugged it in for an hour,i put a stancor relay on it in 09 and glow plugs in nov 2010. it also runs great when it warms up.
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