High RPM Backfire when fully warmed

Yea. Testing will answer all the questions I think. I will say this, Ive seen Chrysler boxes do exactly what he’s describing except for the hot/cold anomaly.


Yup. Me too. I just had a Mallory Unilite burn me. I’ve had them fail and quit and just not work, but never have I had one warm up for 12-15 minutes and quit. And then start 45 minutes later.

That one drove me nuts.