89 240sx rough idle

[1989240sx]

hey guys so i am having a rough idle problem with my car i have been driving my car all day i went to see a movie and after the movie the car was shaking real bad and sounded differently i thought it would be something with the spark plug wire they all look fine it also lack power so not sure if i should change the plug wires out or not the wires them self are almost a year old the plugs are about the same any ideals would be great

[Gabes13]

check your compression, tps and or maf.

[1989240sx]

i clean my maf not too long ago and how would i cjeck my tps

[Dimitri]

...the car was shaking real bad and sounded differently...

While idling if your step on the gas and it seems to hesitate before reving up, it's an air intake leak usually the curved intake boot. You won't be able to see the hole until you take it out and flex it.

Checking for a fouled plug doesnt' sould like a bad idea either.

[Two Fowty]

i have the same problem, well. did.. it went away, not sure why. but i think it is coming back, so ill be checking in on this thread.

i was told it might be gunk clogged in the fuel filter? idk, just an idea.

[1989240sx]

i have change my fuel filter

[safin]

did you pull your spark plugs out?

[1989240sx]

no i have not if i was going to replace them what would be the best plugs to get

[240sxFTW]

IACV.

that is all. fyi- clean it!

[1989240sx]

i have clean my iacv it has been a while

[1989240sx]

okay guys i did so work on my car and it is a bad injector i test it by disconnecting one injector at a time to see it there was any changes in the car when i did the first one there was no change at all so where is the best place to buy new injector

[numbnuts240]

new or used?

[1989240sx]

new would be nice

[Jdmstyles]

What i'd do first is replace the spark plugs and the spark plug wires as well as the adapter.

Occasionally one of my spark plug wires would fall out of it's socket and the car would idle like a bull.

[Dimitri]

Since you figured out which cylinder is not firing, your should check the spark plug first before changing the injector. If it is the spark plug, it's easier and cheaper to replace

[TraceTheory]

okay guys i did so work on my car and it is a bad injector i test it by disconnecting one injector at a time to see it there was any changes in the car when i did the first one there was no change at all so where is the best place to buy new injector

Had the same issue, same solution... Infact same injector went, I'd check compression if I were you. My head gasket blew a week after i put the new injector in

[1989240sx]

so i fix the problem it was a bad injector lucky i had got a few when i bought the car i forgot about them