If you've pinged, how did you get rid of it?

[whodat]

now that it's cooled off a bit my pinging goes away

it also goes away when I run 93 octane, $$$$

tried 2 techron bottles followed by seafoam in the gas, still pinging

 

[alkaline747trio]

Have you checked your timing? If it is advanced some, you will get pinging, higher octane also does away with most pinging, but like you said $$$$

 

[Stevemcnash]

How long has it been pinging? Ping occures when part of the Air/fuel mix in the cylinder ingites before the rest does. This happens because when you increase the pressure of the mixture you also are increasing the tempature. So if you compress the mixture too much you will autoignite the gasoline, before it is ignited by the flame-front (caused by the spark plug). Higher octane simply has a higher treshold before it will autoignite. I'd be currious to see if the timing was off, that is the most likly cause, assuming it didn't start to happen after an engine rebuild or something. Just my 2cents. Good luck

 

[whodat]

whelp, chalk another one up to the guys on MUD. checked and corrected the timing yesterday, it was between 10-12...now 3.

no pinging now, but then again it's not 100 degrees outside.

no startup rattle this AM, is this a coincidence?

love the MUD board,
wd