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Engine ping then knock

(1995 Chevrolet 1500 Pickup)
in Lyndhurst, VA on January 10, 2010
my tuck pings then turns to a small knock until you give it more gas i have put in a knock sensor it helped for around 20 miles
Displaying 1 answers & 1 comments
Popular Answer
on January 10, 2010
The pinging may be from a bad EGR valve. Any Check Engine or Service Engine Soon Light coming on? I assume that your timing is on the money and that your truck is not over heating. Check out this Article, the CEL is about a problem, not maintenance.
on February 09, 2013
If the truck is heating up not over heating at highway speed is that a different problem? I have the ping as well
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