Rough idle/missing after spark plug install.

[SKNOT9]

Hi there. I just replaced all the spark plugs on my vz and after that, it now misses every so often on idle. It will miss once or twice every minute or so, it isn't constant. It used to miss under heavy acceleration which is why i installed the plugs, its now perfect on acceleration but just does this every now and again on idle. Anybody got an idea of what it could be?

[mike4226]

Does your motor make a ticking sound since the new plugs?

[heyitsEnricoPallazzo]

Are the plugs Bosch Platinum Fusion by any chance?
Did you install 2 new plenum/manifold gaskets?

[impulsive]

perhaps some form of video would help, are you sure its 'missing'

[impulsive]

Are the plugs Bosch Platinum Fusion by any chance?
Did you install 2 new plenum/manifold gaskets?

Why would he install 2 new ones?

[soop]

Cat hasn't collapsed has it?

[SKNOT9]

don't think its the cat. and not bosch, got NGK plugs, didnt install any new gaskets, the one that was on there was not ripped or anything so i figured it would be fine, who wants to fork out 140 dollars for a gasket lol. Pretty sure its a miss, car jumps and engine makes a choking sound, but its not constant like i said. The motor doesn't make a ticking sound as far as i'm aware, what road are you going down with that one Mike?

[soop]

No vacuum leaks?
All the plug leads are on properly?

[SKNOT9]

yes and yes, double checked those thanks

[soop]

How old are your O2 sensors?

[heyitsEnricoPallazzo]

don't think its the cat. and not bosch, got NGK plugs, didnt install any new gaskets, the one that was on there was not ripped or anything so i figured it would be fine, who wants to fork out 140 dollars for a gasket lol. Pretty sure its a miss, car jumps and engine makes a choking sound, but its not constant like i said. The motor doesn't make a ticking sound as far as i'm aware, what road are you going down with that one Mike?

140 bucks! Should be less than $50.

[poweredbycng]

This problem can be caused by spark leak. Did you use plenty of dielectric grease on the coils to ensure a good seal between the rubber boots and the spark plugs?

[bigdaddycool]

Coil Packs, Vacume Leak, Age. Given that you said it was missing on acceleration i would say coil packs