Car rough idle problems need help.

1993 Nissan Altima GXE

Car rough idle problem need help.

I know I asked this before.    I am going to be a little bit more
detailed.

When in park, neutral it shakes
When in reverse it shakes worse.
When in drive it shakes under 30 mph.
When going above 30 it shakes a lot less or does not shake at all.
Shakes at stops. 

From Reading
Spark plugs & wires seem to be the most cause even if they look new.
Wouldn't a compression test tell if it is bad spark plugs?

Next is a fuel filter.   Which I am tempted to try. 

The other is a fuel injector. 


Greg Rozelle



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