My question is the following< I have a 1987 nissan 200sx, 2.0 liters

[mai0f]

my car has the 8 plugs and still has a cat....

[recycle_me]

Damn logik dosen't know everything.

[logik23]

Yeah, surprising isn't it...and damn 8 plugs, that's a first...

[wh1skea]

Some Nissan/Datsun engines had 2 plugs per cylinder. One example is the NAPS-Z engines, like in the 720 model trucks, and the early hardbodys. I'm guessing that his 200SX has something like a Z20. As for the car dying, you sure your alternator is putting out enough power? Sounds more like an electrical problem.

[monooxide]

The whole dual spark plug thing is for better fuel combustion...lets say a single spark plyug engine burns 85% of the fuel coming in and a sdual burns 99.9%...do you guys know what a CAT does? A cat doesnt re burn the fuel it cleans the smog thats going to come out...I believe by a chemical reaction. Get the thought out of your head that the 2nd Spark plug burns on the way out...it sparks not even a milisecond later...

[orestes]

monoxide were you talking to me? thats what i said a cat does, re-burn the exhaust gases, not the fuel. it converts your NO and NO2 into plain nitrogen and oxygen and i think also changes carbon monoxide into carbon dioxide. obviously not 100% efficient though.