Re: [T3] Engine noise

[Toby Erkson <air_cooled_nut@pobox.com>]

<x-flowed>To Nobody Specific:
Modern cars retard the timing when the knock sensor tells the ECU 
knocking/pinging is occurring.  For us, retarding it will help reduce, 
maybe even stop, pinging but at the cost of reduced power.  So you can't 
mash the gas pedal into the carpet, so what?  As it's been found out, if 
you back off on the pedal a touch the pinging goes away.  That's what I 
do.  Now, if you have to back off a LOT on the pedal then yes, something 
prolly is wrong but if it's just a smidgen, hell, work around it...these 
are old cars ya know :-)

 Toby Erkson  --  http://www.icbm.org/
 '72 VW Squareback Darksider, 5-speed, 2.0L, rag top
 '72 VW Squareback Lightsider, automatic, FI, sunroof, gas heater
 '95 VW Jetta ~ SCCA Solo 2 EP #3; '73 Porsche 914; '81 Honda Gold Wing
 Portland, Oregon


> > > > Detonation. Try backing your timing off about 2-3 degrees.
> > >
> > > OK. I did that. It is now timed at 0 degrees, which is actually by 
> > > the book
> > > for a 69. The timing light shows 29 degrees of maximum advance with the
> > > vacuum hose disconnected. Before it was timed at 31 degrees.
> >
> >
> > Okay, I didn't know that you were trying to run more advanced timing 
> > than
> > suggested.
>
>
> It's not really a question of "trying to run a more advanced timing 
> than suggested". At first I timed it to 7.5 degrees BTDC, because that 
> is where I was led to believe that it should be timed...

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