pinging,backfiring, power loss
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Joined: May 2003
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pinging,backfiring, power loss
Hello,
I have a 1989 f150 with a 302ci motor. The problem is that when it is cool it runs fine but as the truck warms up it starts running bad. It starts pinging like a spark knock or valve rattle when I accelerate, along with backfiring and lack of power. The temperature seems fine and the timing is fine . It has fuel injection. I can't figure this out. Any ideas?
thanks
Dave
I have a 1989 f150 with a 302ci motor. The problem is that when it is cool it runs fine but as the truck warms up it starts running bad. It starts pinging like a spark knock or valve rattle when I accelerate, along with backfiring and lack of power. The temperature seems fine and the timing is fine . It has fuel injection. I can't figure this out. Any ideas?
thanks
Dave
Post Fiend
Joined: Nov 2002
Posts: 9,987
Likes: 7
From: Memphis, TN
pinging,backfiring, power loss
Pull the codes, check the vacuum & fuel pressure, and set the ignition timing according to the emissions sticker in the engine compartment.
