my g35 all of a sudden turns off at times and shakes and throws smoke form the exausht...help what do yu guys thinnk it neeeds?...my service engine light lights on at times aswell

 

It could almost be anything, but first thing comes to mind would be spark plugs. How much mileage is on your car and what year is it (not that it really matters, but helpful). Did you buy it used from a private party or from a dealership? Nissan did have a recall of their ignition relay stalling the car, but I kinda highly doubt that. Give us more info about your car and we'll progress from there.

 

i bought the car in lik around april wiht the millage of 90k...nd now it lik in about 102xxxx..its an 04 i got it used and havent changed spark plugs ever since juss oil changes...yu think it can b the spark pluggs?...thnxxx for your help

 

Could be anything. Blown head gasket, oil leaking into the cylinders, or anything else.
Needs to go to an engine mechanic, or a gearhead friend.

 

yea now alot of smoke comes out off the exaust could be the head gasket...
you going to the meet today josh?

 

What color is the smoke???

 

the color of the smoke is grey bro

 

Pull the codes. Excess fuel is black, dark gray. Oil is blueish. Antifreeze is white smoke. Keep in mind you can have combination's of the general colors. Seeing that it is time to change plugs go ahead and change them, the condition/deposits on the plug can also give insight into the running conditions of the motor.

 

so out of evrything i can do to it u think i should start by changin the spark plugs first?

 

If the smoke is grey/white? It can be water getting in the engine...driven in any storms lately?

 

nahh not lik in 3 weeks..but its throwin alot of grey/white smoke...but the car still runs

 

Could also be coolant leaking into the cylinders. Could be any number of things.
Usually when a fluid is leaking into the cylinders, you blew a gasket.
Main gasket to check is the intake gasket, under the lower plenum.
But usually when you buy gaskets, it's a whole set.
Look all around your engine for anything visible on the outside of it. Look for leaks of anything, especially around the gaskets.

I'm always at the 190th and Anza meet thursday nights.

 

Start by changing the spark plugs and go from there. Most likely they weren't changed so that's what I would do before jumping to the conclusion.