My avalanche is throwing codes for p0301 p0751 p0496 and ...
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BrianS121
287 days ago
Hello and thank you for using Just Answer, my name is \*\*\*\*\* \*\*\*\*\* I will be glad to help you. It looks like you have several unrelated faults here but the cylinder 1 misfire combined with smoking exhaust makes me think you have an injector leaking. Can you unplug the cylinder 1 injector and see if it stops smoking?
Customer
287 days ago
I haven't tried that but I'm at work now but I can try.
BrianS121
287 days ago
It will still have the misfire, I just want to see if that corrects the fuel smell and exhaust smoke
Customer
287 days ago
Let me walk out and try
Customer
287 days ago
Ok it's still smoking and the smell is still thereThough not as strongSmoke still very present but smell not as badAre you still on?
BrianS121
287 days ago
I am going to do a little digging around tomorrow for you
BrianS121
287 days ago
Ok so p0521 is an oil pressure fault, p0751 is a transmission shift solenoid fault, p0496 indicates a faulty purge valve that you already replaced. Have you tried to get the misfire to move by swapping plugs? P0301
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My avalanche is throwing codes for p0301 p0751 p0496 and p0521. I changed the canister purge valve solenoid and the truck still smells like it's running rich and has smoke coming out of the [exhaust](/topics-exhaust-chevy/) when a...
My avalanche is throwing codes for p0301 p0751 p0496 and p0521. I changed the canister purge valve solenoid and the truck still smells like it's running rich and has smoke coming out of the [exhaust](/topics-exhaust-chevy/) when at idle. Then taking off it is very shaky. Once I'm going down the road everything seems fine but as soon as I stop it smells really bad like fuel again and idles really rough Mechanic's Assistant: Is the rough idle intermittent or consistent? Intermittent Mechanic's Assistant: What is the make/model/year of your car? 2007 Chevy avalanche 2wd ltz Mechanic's Assistant: Are you fixing your vehicle yourself? What have you tried so far? I am trying to. All I have done so far is check for spark and replace that solenoid Mechanic's Assistant: Anything else you want the Mechanic to know before I connect you? I've been told by others that it may be the computer