Pinging or knocking noise while driving?
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Old January 10th, 2010, 10:33 PM   #1
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Pinging or knocking noise while driving?


When I speed up at like 40+ mph I hear like a weird pinging noise comming from the engine? Would seafoam help this?
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Old January 10th, 2010, 10:35 PM   #2
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Originally Posted by 00mustangv6 View Post
When I speed up at like 40+ mph I hear like a weird pinging noise comming from the engine? Would seafoam help this?
Have you recently tuned your car or anything to advance the spark of your car?
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Old January 10th, 2010, 10:52 PM   #3
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What rpm?? It does sound like spark knock. Try some seafoam in the break booster and run some high test through it.
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Old January 11th, 2010, 07:11 AM   #4
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My performance mods are just a CAI and shorty headers with dual exhuast.

When Im near 2500-3000 rpm around that range, sometimes less.

So its a spark knock? Should I replace the plugs?

My jeep makes the same exact noise when driving too
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Old January 11th, 2010, 08:04 AM   #5
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is it a ping or a knock big difference there
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Old January 11th, 2010, 12:56 PM   #6
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i would say its a ping. you have to listen closely its not that loud and it doesnt happen all the time. anywhere from the 2-3 rpm range
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Old January 11th, 2010, 11:10 PM   #7
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why are you running that high of rpms at 40 mphs
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Old January 12th, 2010, 09:06 AM   #8
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It's likely caused by carbon build up in the back cylinders (3 and 6) due to oil from the PCV system. This is a well documented problem on 99-00 Mustangs. I was told by a Ford parts person that they have a decarbonizing fluid that can be used like sea foam or try sea foam to get rid of the carbon.
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Old January 13th, 2010, 12:57 PM   #9
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Would it be ok to Seafoam the car? it has almost 101K on it. I just changed the oil over the weekend so I cant do it now?
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Old January 13th, 2010, 01:00 PM   #10
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yea.. sea foam may help.. it will kill that monkey with the hammer..
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Old January 13th, 2010, 05:25 PM   #11
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It would be OK to run sea foam into the intake through the PCV hose. This could help to loosen up carbon in the combustion chambers.

Don't add it to the oil since it is new.
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Old January 14th, 2010, 07:10 AM   #12
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What about running it in the gas tank and the pcv hose?

would it make it run better and cleaner?
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Old January 14th, 2010, 08:44 AM   #13
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I have 130 thousand miles i think you'll be okay. I wouldnt put it in the oil though. I did it and it ate my oil seals I dont know why, and it made the oil leak out main and etc. I was told by a mechanic after you put that junk in your oil and change it some of it is still in there and will be for a little while, not sure if thats true though, all i know is that seafoam eats through stuff.

I would suggest putting it through the hose, and fuel tank.
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Old January 14th, 2010, 01:30 PM   #14
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For the pinging what is needed is to run the sea foam through the intake via the PCV hose. That should help get carbon out of the combustion chambers. No need to add it to the oil or fuel. To clean the injectors I would recommend techron or an after market injector cleaner.
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Old January 15th, 2010, 04:15 PM   #15
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Your problem sounds like engine knock. You might have bad gas. Drive your car till fuel light comes on and fill your car with high octain premium gas.
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