Engine backfire poor idle
Melting Slicks
Joined: Mar 2007
Posts: 2,520
Likes: 11
From: Hinckley OH
It could be as simple as the points slipping or the rubbing block breaking. When the dwell changes it changes the timing. Either replacing or possibly even just resetting the points might fix everything.
Thread Starter
Instructor
Joined: Nov 2012
Posts: 124
Likes: 3
Points are good. power valve ok. can't find any vacuum leaks. so it sounds like the worst. So jumping a tooth on chain can happen all of a sudden just sitting in the garage idleing and tuning the carb? will a one or two tooth jump bend pushrods and valves?
By the way thanks for all the response.
By the way thanks for all the response.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
2027 Corvette vs The World: Every Model vs Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
10 Things C8 Corvette Owners Hate (But Won't Tell You)
Joe Kucinski
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!
Brett Foote
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)
Joe Kucinski
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!
Michael S. Palmer
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!
Joe Kucinski
Pro
Joined: Apr 2013
Posts: 535
Likes: 8
From: London Ontario
They can go without warning at anytime. I had one jump at highway speed in an old truck; shut down like a switch on that one. The slack in the chain starts to whip and, if its bad enough, catches a tooth and jumps.
If you have stock(ish) cam and pistons they will never hit. You will be fine with no internal issues.
The good news is that its not a bad repair on our motors.
If you have stock(ish) cam and pistons they will never hit. You will be fine with no internal issues.
The good news is that its not a bad repair on our motors.
