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www.cumminsforum.com > ... > 3rd Gen. Powertrain Jun 5, 2010 - 9 posts - 7 authors
I have an 06 Dodge 5.9L that has a light white smoke and rough idle when first ... 2006Ram 2500 QCSB 4x4, 3" Carli coils w/ 1" Daystar spacer, ... Still ran good tho, dispite the exact conditions you describe on Cold Start up.
Well, code 336 is for a problem with the crank sensor, and code 171 is for fuel system too lean bank one which is the side with cylinder one. Since you have checked fuel pressure and I will assume fuel volume is good, the crank sensor or circuit could be at fault.
Changing the plugs probably had nothing to do with it. White smoke is usually a sign the engine is burning coolant or trans fluid. You might want to check those fluid levels. If the coolant is low, you may have a leaking head gasket or intake gasket.
Hi, Did it run correctly after the rebuild? If so, has it gradually gotten worse or just all of sudden started having issues? If your fuel filter was plugged did it run better after changing it then get worse? If so, you may have rust in your gas tank. Has the truck sat w/low fuel thru a winter or 2?
I'd consider getting the fuel injectors cleaned - meaning removed - not just the 'service', or just get new/lower mileage ones. I bet they're avl. on the Chevy forums for a lot less than from the dealer.
If you have over 100K miles on the rest of the truck, sensors may need replaced. Things to check: 1. MAF (don't know your engine, may be irrelevant) 2. Oxygen - O2- sensor - may have more than one 3. TPS - throttle position 4. Idle control - (don't know your engine, may be irrelevant) 5. Fuel pump 6. Fuel pressure regulator (don't know your engine, may be irrelevant)
I'd go check on the Chevy forums for more info...very likely your exact issue has occurred before and been fixed.
HOW MANY MILES ALOT IT REALLY SOUNDS LIKE YOUR O2 SENSOR OK LOCATED ON THE EXAUST PIPE CLOSE TO ENGINE UNDER THE HOOD THEY CONTROL YOUR FUEL MIXTUER FOR HOT AND COLD LIKE A CHOKE . IF ITS BAD THE ITS FLOODING IT OUT WHEN HOT AND YOU GET ROTTEN GAS MILAGE BECAUSE YOUR FUEL PRESSURES ARE FINE REGULATORS EITHER WORK OR THEY DON'T AND IT THEY DON'T YOUR TRUCK WON'T RUN O2 SENSORS GOING BAD DON'T ALWAYS GIVE A CODE OR A DASH LIGHT BECAUSE OF THE BAD GAS MILAGE AND BLACK SMOKE WHEN IT IS WARM ITS PRETTY OBVIOUS WHAT IT IS OK GOOD LUCK POHLCAT
these cars are bad to blow head gaskets and i have had and lost two of them this way replaced engine in one costly but ok you have all the symptoms of blown head gasket take cap off for radiator fill make sure its full then if bubbles come up while cranking its blown to make sure then drain radiator the lack of water in it it will crank normal and possibly start which is proof positive