What can cause weak spark?

henschman

Active Member
Joined
Jul 23, 2004
I have traced my no-start condition to weak spark. The plugs will arc weakly while pulled out of the motor, but won't fire when installed.

I think this problem might have been caused originally by the fact that I had my negative battery cable disconnected from the motor completely (it is supposed to bolt to the turbo shield bracket), which was causing the back ground strap to get really hot. I fixed all of this, and it still has a weak spark.

I have already put a new ignition module on the car after fixing the grounds, because I thought the bad ground may have fried the old one. Still no start. What else should I check?
 
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