how can i raise my fuel pressure - Ford Powerstroke Diesel Forum
 
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post #1 of 8 Old 10-14-2007, 10:06 AM Thread Starter
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how can i raise my fuel pressure

hi all any help would be gr8 i don't have a tuner yet my truck is stock except for my exhaust i took out the cat and muff i get white smoke to sum times and i was reading on the forms that someone said it maybe do to low fuel pressure is there any way to get it raised with out a tuner
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post #2 of 8 Old 10-14-2007, 10:15 AM
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I don't think low fuel pressure would cause that but it can cause worse damage.
What is your pressure?
Check it (at the secondary filter bowl) and if its 48 or above, its fine. If its less, your gambling on knocking out some injectors.

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post #3 of 8 Old 10-14-2007, 12:58 PM
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what year is your truck ? how many miles on it ?
does it only smoke when it's cold ? white smoke is usually a clogged air filter or burning oil. if it is still under warranty i'd have it looked at. but i doubt you are running into a fuel pressure problem with stock tuning... unless... when is the last time you changed both of your fuel filters ?
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post #4 of 8 Old 10-14-2007, 01:55 PM
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i get some white smoke on start up, but i figured that it was just starting to get cold... could it be more?


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post #5 of 8 Old 10-14-2007, 02:01 PM
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CChase - nothing to worry about... my truck as well as my stepdad's and a few other 7.3's that I know of have a SMALL puff of white smoke at startup. As long as it doesn't sit there and steadily puff white then you're probably alright.

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post #6 of 8 Old 10-14-2007, 02:39 PM
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Great news, thanks, thats all it is, a puff.


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post #7 of 8 Old 10-14-2007, 02:56 PM
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Chances are that the white smoke is just unburned fuel at start-up. Until the cylinders get to minimum operating temperature. If it puffs white when the engine is warm, it is most likely coolant from either headgaskets or EGR system. Check the coolant level and make sure it remains at the same level every morning before starting the truck. If it gets lower over time then you need to check the EGR cooler first.

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post #8 of 8 Old 10-15-2007, 08:13 PM
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yeah a small puff at start up is okay, especially when it's cold.
like the guys mentioned though, white smoke when you are at operating temp is not normal.
it could be from coolant getting into the exhaust system, (head gasket/egr etc) or it could also be burned oil (too much oil, rings worn etc.)
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