My engine seems to ping when it is warm and mileage has always been a bit crappy since I got it. 2001 4.6 SOHC. Engine runs great, no other real issues other than pinging and mileage. I'm thinking EGR valve?
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My engine seems to ping when it is warm and mileage has always been a bit crappy since I got it. 2001 4.6 SOHC. Engine runs great, no other real issues other than pinging and mileage. I'm thinking EGR valve?
Kind of sound like a custom tune with too much advanced timing.
Previous owner may have tweaked the computer tune and may not have told you.
Little 2V 700+ RWHP, Pump Gas
10.46 sec @ 136 mph
What octane fuel are you using and does the ping go away with higher octane?
I'd look to.......
-possible plugged cat
-clean MAF and retest
-low fuel pressure / lean (filter been done recently??)
-how long since plugs changed?
Maybe it’s got some carbon build up in the combustion chambers. Fire a can a sea foam through it.
Slack/loose timing chain? Working at Honda I see that a lot.
Stock engine Fox equipped with the Maximum Motorsports catalog. Now I have lots of Trick Flow stickers.
No downside to running a full can of SeaFoam through your next tank of fuel.