Supra rough running problem
My Supra's missing problem persisted for months, my mechanic finally figured it out, it was the EGC valve stuck closed, or open, one or the other (It's been awhile, I forgot which one). The reason it was so difficult to diagnose was because all symptoms points to a missing cylinder but it's not. Try replacing the EGC valve, it's a cheap item. Let me know if it works.
Suprakat
|