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  #1  
Old 04-11-2012, 08:21 PM
2004 supercab xlt, 4.0
 
Join Date: Aug 2011
Posts: 155
Default Pinging in 2004 sohc

I have a pinging problem in my 2004 sohc 4.0. Just about any hill from 30 mph on up to highway speed causes my valves to rattle or ping. Premium 93 octane fuel solves the problem, but the engine should run fine on regular. I have about 83k miles.

Any ideas?
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2004 super cab, 4 door xlt with appearance package and 4.0 cammer V-6 with auto trans and 2wd fitted with a Leer topper. Sounds via Alpine head unit and power pack through infinity Kappa components front and Kappas rear.
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  #2  
Old 04-11-2012, 09:41 PM
Ford Ranger Owner
 
Join Date: Feb 2011
Posts: 55
Default Re: Pinging in 2004 sohc

Its caused from detonation in the cylinder(s). Is there a loss in performance? Is your engine running hot? Check the timing? Keep putting high octane fuel in it until you find the problem. Detonation can ruin the engine.
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  #3  
Old 04-11-2012, 09:45 PM
Cant kill a ranger
 
Join Date: Mar 2011
Posts: 674
Default Re: Pinging in 2004 sohc

Quote:
Originally Posted by LittleWhite7 View Post
Its caused from detonation in the cylinder(s). Is there a loss in performance? Is your engine running hot? Check the timing? Keep putting high octane fuel in it until you find the problem. Detonation can ruin the engine.
^ yep, detonation sucks, my bud has a crown vic motor that suffered from it, not good.
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