Running Rich? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Thedriftbadger · 07-29-2013, 11:30 AM

Well before you go and replace the engine you should take care of some of the things that would make it run rich. Coolant temp sensor, clean the maf, replace o2, and run some seafoam in a tank of gas. My car was runnig rich too and i did thise things and it's smooth as hell now and running right. Like $40 total for all that too.
What do your plugs look like?
Gray smoke is usually fuel, blue is oil.

Btw i think they all do the idle thing you described. Or maybe try cleaning the iacv.

07-29-2013, 11:30 AM	#6
Thedriftbadger Zilvia Junkie Join Date: Jun 2013 Location: ontario Posts: 305 Trader Rating: (0) Feedback Score: 0 reviews	Well before you go and replace the engine you should take care of some of the things that would make it run rich. Coolant temp sensor, clean the maf, replace o2, and run some seafoam in a tank of gas. My car was runnig rich too and i did thise things and it's smooth as hell now and running right. Like $40 total for all that too. What do your plugs look like? Gray smoke is usually fuel, blue is oil. Btw i think they all do the idle thing you described. Or maybe try cleaning the iacv.