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Old 02-18-2012, 10:58 AM
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No start when cold, fine when warm.

Hey guys my 2003 6.0 one day at work wouldnt start. I will start by saying it was about 40 degrees farenheit outside with about a 20mph wind. I started work at 8 and was asked about 1:30 to run up to the hardware store to get some things for the shop. I went to start my truck and got nothing but pouring white smoke out my exhaust (raw fuel). I plugged it up for 2 hours and it was fine. Now ever night around midnight I have to plug it up before I go to sleep and it starts fine when i wake up. If I leave it unplugged over night then it will no start in the morning. The only thing I get is raw fuel, and I dont want to continue this because I am afraid I will lock up the motor with too much raw fuel in the cylinders. Help PLEASE.
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Old 02-18-2012, 11:37 AM
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Check your compression. When all is said and done no matter how fancy or efficent a fuel delivery and control system is its back to basics,if ya haven't enough compression you can not get combustion to take place.

Haveing to prewarm the block indicates to me a compression issue. The warmer the cylinder/block is the less heat will be lost from the compression of the air to warm the cylinders. Thats why they have glow plugs to begin with.
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Old 02-18-2012, 12:52 PM
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I understand that, Could it be the glow plug control module? I have heard they are common to go. I have also replaced all my glow plugs around 15,000 ago and the HPOP was replaced at 172,000 and I have 181,xxx so what the $&%# is causing my issue haha.
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Old 02-19-2012, 12:29 PM
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I had relativity the same problem. it was the module for me. really easy to replace
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Old 02-20-2012, 11:17 AM
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Quote:
Originally Posted by StrokenUSMC03 View Post
I had relativity the same problem. it was the module for me. really easy to replace
It was your glow plug module? I maen it runs perfectly fine once it starts but it absolutely will not start on its own power, with out heat of course haha. If its warm its fine but it wont start cold, it will start if its drove enough to get to "optimum running temp" and then shut off and it can sit for a whole entire work day and all and it will start fine. Other wise, you better be near a plug.
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Old 02-20-2012, 12:25 PM
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With new gp's, it is likely the module, i have had the same issue before, i got lucky once,and was able to unplug it, spray it with electrical cleaner and plugged it back in and it worked, also check for a broken wire, if all else fails ebay has 'em for $169, that should throw a code if you scan it, then you will know.
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Old 02-21-2012, 12:23 PM
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Good deal, I need to get a scan tool. I havent figured out how to get my quadzilla to scan yet.
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