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Duramax fuel pressure

My truck is black smoking an knocking an giving me a code that says low fuel presser read

1 Answer

Johnathan Lence

GMC Master 443 Answers
Posted on Jan 25, 2014

Johnathan Lence

GMC Master

Joined: Oct 10, 2008

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Do you have an after market programmer installed .what code is it showing .

3 Related Answers

Anonymous

86 Answers
Posted on Mar 29, 2010

SOURCE: black smoke runs badly, fuel pressure regulator or temp sensor?

look for a vacuum leak. A large vacuum leak will do just what you described. I would listen for a leak first if you cant hear it and locate it then i would spray carb cleaner around the vacuum lines. If you have a leak it will pull the carb cleaner in and you will hear the engine rpm change.

Ron

249 Answers
Posted on Apr 27, 2011

SOURCE: 1998, gmc,K2500, 5.7l, 250,000km, starts

A bad coolant temp sensor for the ECM will cause that problem ... they are cheap and easy to replace. One other possibility is a piece of carbon stuck in the EGR causing an internal vacuum leak ..
Good luck.

Scott Woods

18 Answers
Posted on Sep 24, 2011

SOURCE: Problem with a 2006 GMC 3500 duramax. Under heavy

could be some bad injectors...does it smoke real bad?

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2006 Sierra 3500

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Po 405 po193 and po1196

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Duramax fuel pressure

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Johnathan Lence

3 Related Answers

Anonymous

Ron

Scott Woods

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Related Questions:

Po 405 po193 and po1196

I just bought. A volvoS40 but it's smoking. With a. Dark colour how do i. Get it. Fixed

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2007 Silverado, 6.6 Duramax w/Allison Transmission. Computer says "Low Rail Pressure". The truck seems to have no power in "Tow" mode. If I shut the truck off for about 45 minutes and restart it's OK for...

2001 Duramax 6.6 Turbo wont start

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2006 Sierra 3500

Po 405 po193 and po1196

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Ronny Bennett Sr.

john h

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Related Topics:

Trustworthy Expert Solutions

Duramax fuel pressure

1 Answer

Johnathan Lence

3 Related Answers

Anonymous

Ron

Scott Woods

Add Your Answer

Attachments: Added items

Related Questions:

Po 405 po193 and po1196

I just bought. A volvoS40 but it's smoking. With a. Dark colour how do i. Get it. Fixed

2007 duramax lbz missing bad smokes black when aselerate chek fuel filter is half way full

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