[Shotimes] Slight Detonation Issue

[Ron Childs]

Actually, I was thinking more about running hot. Running cool/rich would tend to reduce or eliminate detonation. As far as deposits go, I would think that deposits inside the chamber would be the only concern (as far as knocking goes.) I don't see how deposits on the back of the valves (such as Bruce's) would be a problem. 
 
Also, I don't know of anything that would cause the timing to be too far advanced other than maybe an LPM. I believe that if your knock sensor has failed, that that would throw a code during KOER.     :-/
 
-Ron Childs       '91

Josh Salaets <jsalaets@msn.com> wrote:
> The PSPS code is Power Steering Presure Switch. You didn't turn the wheel
> left & right during the test.

Actually I did - does this mean the switch is failing? What exactly does
this switch do?

> Since you run premium gas, I might think
> that maybe the detonation is caused by deposits on the pistons or valves
> causing hot spots. Your engine is running at normal temperature, right?

Come to think of it, it has been running pretty cool lately, so deposits may
be the problem. Maybe I should replace the thermostat...

Josh Salaets
95 SHO MTX (See it at: www.cardomain.com/id/sh0gun)
85 Omni GLH-T (Yeah, it's fast)
NWSHOC Member
Aloha (Portland), OR