Engine knock at start up
Asked by Corvettes78 Jan 12, 2016 at 09:44 PM about the Chevrolet Blazer
Question type: Maintenance & Repair
My 2002 has a ticking knock when I first
start the car but goes away after warmed
should I be concernd
2 Answers
yes..change the oil and filter and add some oil additive...like..lucas.
1 people found this helpful.
There was a thing gm called piston slap that occurred on the 4.3. They have gone for years like that but it sounds like crap when started cold and can last up to 5 min. But without hearing it is hard to tell you if that's it.
3 people found this helpful.