Re: [ST] Several questions

["Masiak, Richard" <Richard_Masiak@xxxxxxxxxxxxxxxx>]

Ping is really pre-detonation.  The fuel/air mixture is being ignited before the piston reaches TDC.  Therefore you have the ignited gases pushing down while the piston is still moving up.

Hmmmm.  Having said that.  If fuel isn't your problem, maybe it's timing?

-----Original Message-----
From: st-bounces@xxxxxxxxxxxxxxxxxxxx
[mailto:st-bounces@xxxxxxxxxxxxxxxxxxxx]On Behalf Of David Jonas
Sent: Tuesday, May 30, 2006 8:49 AM
To: ST@xxxxxxxxxxxxxx
Subject: Re: [ST] Several questions


So, let's remove the fuel from the equation:

What else could cause pinging?  Hot spots (carbon build-up) removed by fuel
system cleaner.

Anything else?  I will go up to "premium" fuel and try that.  But if it
doesn't fix it I'd like to know what else I need to look at.


On 5/30/06, Sprint ST <sprint_st@xxxxxxxxxxx> wrote:
>
> Why not run premium?  What if it isn't the gas that causes the ping at
> all?
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