Injector o'rings bad...? - Ford Powerstroke Diesel Forum
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Old 05-06-2010, 05:09 PM
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Injector o'rings bad...?

how can you tell you have leaking injector o'rings?
would some kind of sensor cause alot of smoke on start up.
truck has 182000 miles on it, new glow plugs and the relay is fine.
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Old 05-06-2010, 06:47 PM
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A common way to tell if the orings are leaking is to look in your fuel filter bowl. If you see dark grimey stuff and not clean diesel fuel then suspect the orings have failed.
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Old 05-06-2010, 07:02 PM
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what about smoke. would it smoke alot of white on start up
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Old 05-06-2010, 07:33 PM
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White smoke on startup is pretty normal. Once it warms up, does it go away? If so, then that is pretty normal.
I would check your glow plug system. Make sure all the connections are clean and solid between the relay and batt. as well as the two smaller wires. Is your voltage dropping when you first turn it on? Then before cranking just watch the voltage and do not crank it until you see it move back up (could take up to two minutes). You could check your connections at the UVCH. Lots of things to check on. Sounds like a glow plug problem if the smoke goes away once it is warmed up. You could try and plug your truck in this evening and in the morning when you start it and it doesn't smoke. It is definitely your glow plug system.
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Old 05-06-2010, 08:04 PM
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I plugged it in for about an hour and it had less smoke. but my milage has went down and theres ALOT of smoke. does anyone know could an injector or two be stuck open and just dump fuel in constantly?
the truck can be ran and get up to full temp but then sit for 3.5 to 4hours and smoke a bunch when i start it up again. i am completly lost on this i dont know where to start. i dont know if i should put new orings on the injectors or if i just need new ones or if it could be a sensor or something.
ill check my filter to see if it is black, i just changed it about 1500 miles ago so it shouldnt be to bad unless i have bad o'rings.

if anyone has a suggestion please let me know.

p.s sorry if i misspelled some words im in a hurry.

thanx guys
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Old 05-07-2010, 04:44 AM
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Are you losing any oil? Coolant?
You can check for excessive blow-by by removing your oil fill cap and see if it smokes like a freight train. Sign of bad rings. It would smoke all the time and smell like oil instead of diesel.
Best thing to do would be to go to your local auto parts store and have them hook up an obd2 scanner. Gather your codes, then clear them. Go home and look them up. That will help narrow down your problem. Then drive around a bit or after a couple of days of driving, head back to the parts store and have them read your codes again. That will give you a more current picture of what is going on with your truck.
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Old 05-08-2010, 01:26 PM
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yea its got some blow by but i heard if you turn the cap upside down and it doesnt move then you are fine, and it does not move the cap.
the truck use to smoke some on start up but now it just pours out till its warmed up... doesnt burn oil and my antifreeze is not gone down or getting fuel or oil in it all the glow plugs are good and working.
The only code i have is a back pressure sensor.
would that cause excessive smoke and rough idle?
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