weak spark on 10v turbo

[Jim Green]

--- Todd Phenneger <tquattroguy at yahoo.com> wrote:
> Heya everyone,
>   I have a problem with the 4ktq "again".  I HATE
> CIS!  The
> engien is a 5kt engine, all functions are the same
> as the MC
> Engine even though my KH is a little different.
> Car ran fine when I parked it but had a stumble on
> throttle tip
> in from idle.
>   Go to move the car to the Garage.  NO Start.  Had
> been parked
> 1-2 weeks.  I have spark and Fuel.  Pulling the
> plugs yield
> fouled plugs and damp piston tops.
>   After much troubleshooting I have narrowed it
> unoficially to a
> WEAK SPARK.  By that I mean the spark seems visibly
> weak at the
> plugs.  Even at night its hard to see the spark.  I
> have tried
> swapping known good Plug Wires, Cap, Rotor in and
> the plugs are
> brand new.  I do get a significant voltage drop at
> the gauge
> when cranking and a large spike in resistance across
> the power
> wire from battery to starter when cranking. 
> HOwever, hooking up
> my Rover via Jumpers to the Power-Dist block in the
> Engine
> Compartment (Battery is in Trunk) and grounding to
> block fixed
> this drop and I still have the same issues.  
>   Next logical step to me is to try a Known Good
> Coil. 

Sounds like a coil to me.  I've fried a few of them,
each one goes in a different way.  You might also look
at your starter.  Mine's starting to go bad and
actually pulls my voltage down low enough in the cold
to reset the stations on my radio if my battery is a
little weak.  You might try a different starter to.

HTH,

=====
Jim Green
'89 80q slow
'89 90tq fast, really fast
http://www.mswanson.com/~jgreen/car_home.html

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