Idle Hunting

[R32GTE]

Hi there , i have just bought a 1999 Nissan skyline R32 GTE, at idle the revs hunt from300 to 900, nd it has a constant eratic miss fire at idle,, when you on the road and accelerating , it has a flat spot , but never in the same spot ???? what could be causing the problem ??? i cleaned the AAc valve and it sorted the problem for a short while ???? but its back now ???

[Mad-Max]

Hi there , i have just bought a 1999 Nissan skyline R32 GTE, at idle the revs hunt from300 to 900, nd it has a constant eratic miss fire at idle,, when you on the road and accelerating , it has a flat spot , but never in the same spot ???? what could be causing the problem ??? i cleaned the AAc valve and it sorted the problem for a short while ???? but its back now ???

start with a couple basic things and see if these help. ive bought cars with the same problem and its always been something simple like this.....

try changing the air filter sounds like it could be hunting for air (or remove the air filter to see if that makes a difference)

check your spark plugs they could just be dirty or faulty

also try some injector clean fuel treatment sometimes that helps

and check for vacuum leaks

[DELLER]

i would be checking for vacuum leaks