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Stumpy
Dodge Dakota
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7/12/2004
12:32:33

Subject: What is Pinging?
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Alright you guys have probly answered this already but I don't know. What is this pinging sound every one complains about? How does it happen?

On a side note I Just noticed that this sound coming from i think my fuel injectors, its a clicking sound. What is that?

Thanks
Stumpy

2001 Dak R/T CC....



Bob Lincoln
Dodge Dakota
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7/12/2004
13:16:09

RE: What is Pinging?
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Pinging is pre-ignition, or detonation, which is the air/fuel mixture igniting before it's supposed to, early on in the compression stroke. Consequently, it's forcing the piston down while it's still trying to come up, which is hard on bearings, rings and valves. Then power is lost, because the mixture finishes combustion early, before the piston gets near the bottom of the power stroke. It can be caused by low-octane gas, high engine temp, advanced ignition timing, carbon buildup and several other factors.

The clicking is normal, it's the solenoids opening and closing the fuel injector plungers.



stumpy
Dodge Dakota
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7/12/2004
14:49:34

RE: What is Pinging?
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Thanks for clearing that up, and I noticed the injector sounds after I put higher octane fuel in. I used to use 87 and then I just put in 89. Does that have anything to do with it? maybe?

Thanks
Stumpy

2001 Dak R/T CC..



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