Question about 2001 Ford Mustang

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I have a 2000 ford mustang v6 I was putting 89 octane gas in it. my manual said to burn 87 octane so i'm burnning 87 now .but when I accellerate I get a knocking, rattling sound took it to a ford dealer and he said I have a carbon build up from the 89 otcane gas how do i get it to stop making the knocking and rattling noise ?

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  • Ford Master
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Humm, give it some time. there are upper cylinder cleaners, but I worry about converter damage, and oxygen sensor damage. The lower the octane, the hotter and more masssive the burn, exactly backwards from what you would think, but higher octane is slower burn and av.gas is really, really slow.
Ford has had slow to start issues that traced back to drivers using too high octane....

Still, if it keeps pinging, you may need to run higher than spec octane.
I would have thought that your car would have knock sensor that would trim this issue...

Posted on Oct 04, 2010

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Tip

Octane Myth


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