V6 Commodore missfire

[robkeith]

Hi i have a missfire that occurs under load when at operating temp

when cold goes as normal but as soon as its at operating temp breaks down under load, generally looses power and responsiveness

so far have changed:-
plugs
leads
coilpacks and ig plate

still no change in drivability

any help appreciated

 

[jeepyrocks]

My money is on the Crank Angle Sensor mate. They can cause all kinds of issues, especially when hot.

 

[HarryHoudini]

Yeah,probably CAS but may be an injector or 2 as well.

 

[hi_ryder]

my 6 banger use to lose power under load because the inlet manifold gaskets were gone. when the system gets up to operating temp and the pressure rises water gets by the gasket makes the car shudder under acceleration.