Nissan Repair Questions? Ask a Mechanic for Answers ASAP
Thank you for your question!My name is ***** ***** give me a moment to review your question and type my reply. Thanks
White smoke can sometimes mean it's to rich when trying to start. Unplug the mass air flow sensor and then see if it will start and idle on it's own. If it does, then the maf sensor is the likely problem. You won't be able to rev the engine much with it unplugged because the computer will turn off the fuel supply at about 2700 rpms. It will also cause the check engine light to come on when it's unplugged, so don't be alarmed.
Please let me know if there is anything else I can do to help.Just Answer does not compensate me for my time and resources, so please rate my answer by using the stars at the top of the page. Payment for your question includes any follow-up questions you may have. Free trials and subscription questions still require ratings. Thank you so much!
Take the front O2 sensor out and see if it will start and run.
Completely out. If the converter is plugged this will give the exhaust and pressure a place to go so it may run. Not a lot of things out there will do this without storing a code.
Let me know.
Really sounds like the car is loaded up with a lot of fuel. Pull a couple of plugs and see how they look.
Also, check and make sure the car is full of coolant. If it's got a leaking head gasket it could be trying to burn coolant.
This would cause smoke as well.
Smell the oil and see if it smells like gas too.
let me know.
I still think it's flooded and suspect something going on with the maf sensor causing the issue.
Unplug the maf, then hold the gas to the floor and crank the engine. When it starts see if you can rev it and clear it. If not, repeat the procedure about 3-5 times and then see if it will start and continue to run with the maf unplugged.
Of course re install the plugs for this.
Ok, seems like a good next step, but I would maybe check engine compression as well. If the timing is off, it will have low compression on a couple cylinders. If the low ones are the wet plugs....that could be the problem. Seems VERY unlikely with only 30k on it, but stranger things have happened and since you don't really have any history, who knows how well its been maintained prior.
min compression is 184 psi. So that is a little on the low side really.
I am sure this thing is just loaded up with gas, no doubt. When you hold the pedal to the floor it turns the fuel injectors off. After you replace the plugs you might want to unplug the injectors and crank it a bit to clear it out. Maybe even while the plugs are out.
I am showing that psi @ 200 rpms cranking speed.
Could be the raw gas has washed the cylinders to drop the compression a bit.
Hopefully we can get lucky here! It's an odd one for sure!
Think I was showing 51 psi on this so that's not really terrible.
Doesn't have any kind of aftermarket security system on it does it?
Sorry to say, I am going to have to open this back up for the other experts.
Yes, the key is chipped, but normally it won't start at all.
If the security light is going out, then it's not the issue.
Hello my name is ***** ***** thank you for your question.
That does sound like you found the problem. I would drain that out and try fresh gas and then recheck and see if that resolves you issue. If not, return back and I will continue to help you.