so I'm starting to rip my hair out b/c my stupid jdm teg R engine is misfiring when its hot out.

Its misfiring such that the idle gets super low and starts to shake.

I have new cap, new rotor, tightened dizzy ignitor wires, used dielectric grease on my ignitor connections as well as on my spark wires and plugs.

The problem NEVER shows up cold and only when it gets warm out.

When I step on the gas to raise the rpm there is no apparent sign of misfiring. Only at idle when hot. If I shut the car off for a few minutes and pop the hood to let cool air into the engine bay and start it up it runs fine again.

Suggestions as to where I should start looking?
Thanks

 

what is your timing set at?

 

17 degrees btdc.

stock everything coils, plugs and such.

i'm gonig to swap out the wires now but I'm still open to suggestions.

Thanks

 

i just replaced the wire set and it seems to have improved considerably. The car after a 30 minute drive the car idles fine still.

So... I'm going to drive some more and see what happens today.

Thanks

 

If it still does it check compression. It could be a slightly bent valve, or valves.

 

Steve does this motor you have belong to a civic ?
Why not post this up in the Hybrid or all motor forums?

 

recheck timing, do compression/leakdown test, change plugs & wires. put in some premium.

 

try gapping the plugs a little bigger. might help..

 

I had a friends car one time that ran like poop at idle when hot and it turned out to be 6 exhust valves that were bent slightly. Just enough to make low compression at idle, but normal above that. It was also a JDM R motor.