spark plug's

[manuelrys60]

hey guy's just replaced my spark plugs on my 300zx 86 n/a and it runs like crap bought some fancy plugs and they suck any paid $4.99 a pice should i just stay with the standard plugs?...................

[Philipio]

Probably. Are they gapped properly?

[evildky]

did you get all the plug wires back itn the correct locations? if they are all correct I'd suspect the wires

[manuelrys60]

yes evildky all the plug wires are in thier right terminal it's the type of plug that has 2 ground prong's but my car ran alot better with just a standard plug, waht do you think go back to my standard plug?? thanks' for your input

[manuelrys60]

yes there gaped correctly thanks for your input!!

[evildky]

the arc can only travel to one of the ground posts, they fancy plugs are useless but shouldn't cause any problems, any problemswere likely caused when you did the replacement, either got a wire or 2 crossed (which you said your didn't) or a plug wire got damaged int he removal replcement process, this isn't always obvious, you can ohm each wire tip to tip, or you can replace them