More on Pinging NG

[Jim Green]

--- duandcc_forums at cox.net wrote:
> I forgot to add one thing that may make a huge
> differnce. The pinging appears to me intermitant.
> There are times when I can take off with any amount
> of throttle and not hear any pinging, but most of
> the time it's there. And now that I went on a drive
> with pinging on my mind, I did notice the car is
> "peppier" when it's not pinging. Could there be a
> loose connection somewhere? Any suggestions what to
> check (I will get the timing checked, I don't have a
> timing light or know how to use one for that
> matter)...and yes, I have ordered a Bently, actually
> a sued one, got it for $50 including shipping...

I still think you may not be hearing knock, and it may
just be the distributer.  When the CIS-III has
something go bad like the knock system, it really
get's pissed, and you would know it, not just notice
it after thinking about it.  Go unplug your knock
sensor and go for a drive, you'll see what I mean.

If I were you I would buy a cheep timing light ~$30,
put a fuse in the fuel pump relay, leave it there,
start the car, hook up the timing light(power leads to
the battery, little clamp thinggy around #1 sparkplug
wire) aim it at the hole in the bell housing down by
the crankcase vent, and see what mark shows up on the
flywheel as the light pulses.  If it's not showing up,
you have a problem, hopefully you will see the 12, 15,
or 18 mark.  Let us know what you find out.

HTH,

=====
Jim Green
'89 90tq 034EFI, Haltech IG5
http://www.geocities.com/jeg1976/car_home.html

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