i started having very bed start up problems when it gets cold but not all the time some times. why?
i hed that problem befor,that was a computer reset problem,after i did reset at nissan, problem was gone.that was like 2 years ago.
i did that at 110.000ml now its 128.000ml
my spark plugs r 6 years old but i have only 28.000 ml on them.
allot of ppl telling me its bed spark pluggs i should chenge them. is it the case?

 

Do you have any CEL codes?
Starting = spark + fuel.

 

no nothing,no cel light.

 

Try changing the plugs then ...

 

One other suggestion... make sure that the self-diagnosis screw on the ECU is turned all the way off (I forget whether it's clockwise or counterclockwise off the top of my head). One time when I checked codes I didn't turn the screw quite all the way back and it didn't like cold starting - it would idle really low and sometimes stall when cold. Fixing where the screw pointed solved the problem for me.

If that doesn't solve it, then I'd agree with Nmex and say change the plugs.

 

There is no such thing as a computer reset. You can clear error codes, and so can Nissan. Clearing error codes has absolutely nothing to do with operational parameters stored in your cars ECU. This information can be found in the factory service manual.

Please describe your cold start problems a bit more so we can try to help you better.

 

i have the same problem, but it was all fixed when i changed my spark plugs.

i suggest changing your sparks... it takes around 1 hour and cost about $60 for all 6 sparks i believe...

 

try turning your key to the on position to let your fuel pump get a head start
give it about 5 seconds and then try starting it maybe?