Anyone one would like to help with a Nissan altima?

[black_demon69]

OK got an 02 Nissan altima 4 cylinder that has no codes and likes to foul plugs sometimes. (yes I did say sometimes)



If car sits overnight it starts right up if you let it sit after it has been running it will foul plugs sometimes



I have confirmed that fouling only takes place when cranked (plugs dry beforehand fouled after cranking). Thing is that it has spark when it happens.



I am thinking CKP or CMP. What do you think?

 

[Will]

Fuel pressure regulator has a leaking diaphragm--my guess. Pull off the vacuum line--there should be no evidence of raw fuel.

 

[rusty ol ranger]

Its not burning oil is it? Or low on compression?

 

[black_demon69]

Have to check fuel pressure regulator



Compression good and no oil burning

 

[black_demon69]

It to me seems like it is electrical like a bad sensor or wiring