Spark checker tool thing
Thread Starter
Acct suspended by request 12 Dec 2012
Joined: Sep 2007
Posts: 94
Likes: 1
From: Louisville KY
Spark checker tool thing
Hello all. I am fighting to find an intermittant miss, stumble when the car warms up ( 89 , red of course). It is a real quick, jerky miss. Can feel it at idle and during cruise control.
New wires, plugs, cap, rotor,fuel injectors, fpr, checked tps, iac, etc etc etc. Can not find any vaccum leaks with propane or spray whatever.
My main question here, has anyone used the spark checker light that goes between the plug and the wire. (Thought I may be able to spot an irregular spark pulse there. Thinking I might have an ignition module going flakey or a broken wire in the distributor). Was wondering if they can hold up under the voltage of the HEI system.
Opinions appreciated, thanks!
New wires, plugs, cap, rotor,fuel injectors, fpr, checked tps, iac, etc etc etc. Can not find any vaccum leaks with propane or spray whatever.
My main question here, has anyone used the spark checker light that goes between the plug and the wire. (Thought I may be able to spot an irregular spark pulse there. Thinking I might have an ignition module going flakey or a broken wire in the distributor). Was wondering if they can hold up under the voltage of the HEI system.
Opinions appreciated, thanks!
Instructor
Joined: Dec 2007
Posts: 100
Likes: 0
From: Phoenix AZ
If you have a clamp-on timing light, just use that. Clip it onto each wire and pull the trigger. You'll be able to see intermittant misses. 
If you have tubular headers another trick is to spray water on each tube.. the one that evaporates the slowest is the cylinder with the problem.
If you have tubular headers another trick is to spray water on each tube.. the one that evaporates the slowest is the cylinder with the problem.
Drifting
Joined: Apr 2007
Posts: 1,339
Likes: 2
From: port charlotte fl
Hello all. I am fighting to find an intermittent miss, stumble when the car warms up ( 89 , red of course). It is a real quick, jerky miss. Can feel it at idle and during cruise control.
New wires, plugs, cap, rotor,fuel injectors, fpr, checked tps, iac, etc etc etc. Can not find any vaccum leaks with propane or spray whatever.
My main question here, has anyone used the spark checker light that goes between the plug and the wire. (Thought I may be able to spot an irregular spark pulse there. Thinking I might have an ignition module going flakey or a broken wire in the distributor). Was wondering if they can hold up under the voltage of the HEI system.
Opinions appreciated, thanks!
New wires, plugs, cap, rotor,fuel injectors, fpr, checked tps, iac, etc etc etc. Can not find any vaccum leaks with propane or spray whatever.
My main question here, has anyone used the spark checker light that goes between the plug and the wire. (Thought I may be able to spot an irregular spark pulse there. Thinking I might have an ignition module going flakey or a broken wire in the distributor). Was wondering if they can hold up under the voltage of the HEI system.
Opinions appreciated, thanks!
