enginge missing

[viccib]

Hi guys, would like to know if anyone knows what could be causing my VZ engine to have a miss in it. I have had the coils and spark plugs replaced and the injectors taken out, checked and bathed but the miss is still there slightly. Any help would be heaps appreaciated Thanks

 

[NU13]

Can you describe the miss in more detail? Is in at idle? Under load? above 3500 rpm?

 

[viccib]

only when idling, when the choke is on and when the air conditioning is on

 

[A9L]

Aircon is a slight load. Done the leads?

 

[viccib]

not yet for the leads and there are no codes being shown by the computer either

 

[diysv6]

Have you cleaned the Throttle Body butterfly area, the MAF and the IAT sensors yet?
Is the PCV metering hole clear, no cracked vacuum hoses etc.?
Is the purge valve solenoid working properly - stuck open, not clicking?

 

[A9L]

Low RPM misfire under load is usually plugs, coils or leads in my experience. Seeing as you've done plugs and coils, my bet is on the leads

 

[viccib]

ok thanks will check all of those things out too

 

[diysv6]

I should have asked. What engine powers your VZ please?

 

[viccib]

it's a 6 cylinder and have had all of the above cleaned and checked. although the mechanic said there are no leads any other ideas would be appreciated and thanks so much for the help already offered