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04 duramax. Rough idle, blue and stinky exshast. I think a bad injector. Any easy solutions

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You do have a bad injector and should replace it real soon. It is open and fuel in pooring into ya cylender. And the undurnt fuel is running into your oil too. So have it changed before you get more problems down the road.

Posted on Dec 10, 2012

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Posted on Jan 02, 2017

pcastal
  • 90 Answers

SOURCE: engine idle? fuel filter or injectors?

Dont bother with the filter, its under your intake I believe, but Im sure its not the problem. yes, only use toyota plugs and wires

Posted on Jan 26, 2009

  • 42 Answers

SOURCE: Engine Trouble

Your getting backfires? hmm interesting. Seems like your engine is getting flooded and either purging it out of the exhaust or burning it all at once or both (backfire). Sounds like a leaky engine valve to me.There again the bluish smoke indicates to me thatyou are leaking oil somewhere- bad rings or head gasket maybe, which could cause a loss of compression which could also cause your problems.That rattling from the left/rear side sounds like a bad muffler try kicking the muffler (not hard though) next time you walk by it.

Posted on Mar 10, 2009

  • 35 Answers

SOURCE: 22 re rough idle and seems to be bad mileage

if your exhaust system is not up to factory spec this will cause idle and rough running conditions,as well as the poor fuel economy, this is due to the sensors not getting accurate readings and sending skewed info to the onboard computer, (the exhaust system has as many as 3 sensors, although i think yours has only one, if you can also remove the catylitic converter, you will get more power./better fuel economy

Posted on Mar 30, 2009

  • 3 Answers

SOURCE: discovery 04 idles rough after 10mins

could be faulty plugs, wire, idle sensor or fuel filter. on board diagnostics may give you a code. haynes manuels can give you instructions on OBD.

Posted on Apr 11, 2009

  • 92 Answers

SOURCE: 1996 Chev Cavalier chugging and stalling running rough idle

Bad injectors causing the vehicle to run poorly can cause other damages to sensors etc. Buy a code reader and check the codes.

Posted on Apr 06, 2010

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How you know when you have bad fuel injecter


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Really rough engine idle at cold start up,, reving the engine seems to smooth it out,,,,


Some causes about rought idle could be:
- Valve adjustment
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A source of rough idle in EFI engines is air leaks or vacum leaks these leaks will upset the fuel mixture without triggering any codes. A bad oxigen sensor will also cause a rough idle, but you should see a code for it ( I think is number 5, but check it).

A good place to start would be an inspection of the spark plugs, plug wires, ignition timing, and idle speed. Next would be valve adjustment. Don't overlook the simple things.

Hope this helps, keep us updated and just keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer.

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1 Answer

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Bad injectors causing the vehicle to run poorly can cause other damages to sensors etc. Buy a code reader and check the codes.

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On 2005 duramax injectors, is there a recall on this issue


05 duramax injectors have gone bad I'm told because the ecm has gone bad. Is this the case or I'm I being told a crock? They say it needs 4 injectors. While I was driving down the road it started missing and then it would quit and start missing again. After about 6 miles it died. After changing the fuel filter and priming the system it would not start unless assisted with gas vapor. It will run for a few seconds (20 or so) very rough with no power at all and then would die. Does Chevrolet have any recomendations or will they give any assistence with this problem. I don't think I'm the first person that has had injector problems with the Duramax .

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1 Answer

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1 Answer

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1 Answer

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