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| Possibly not running on all 6 cylinders. Will a temperature reading work? (Page 2/6) |
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Raydar
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MAR 21, 10:06 AM
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Sorry. Had to...
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Dukesterpro
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MAR 21, 12:29 PM
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A safer way to check if a cyclinder is dead is to take a water dropper and drop a few droplets on each manifold near the ports. The one that doesnt boil instantaneously is dead
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Patrick
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MAR 21, 04:09 PM
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| quote | Originally posted by Dukesterpro:
The one that doesnt boil instantaneously is dead
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Damn, that's old-school to the max! 
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buddycraigg
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MAR 21, 05:31 PM
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I have a plastic spark plug wire puller.
I do it all the time while it is running.
If you pull a wire and the engine does not change RPM, you found the bad one.
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Cliff Pennock
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MAR 22, 07:49 AM
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| quote | Originally posted by theogre:
You need to stop the engine & plug in a spark tester that doesn't need a spark plug in series then start or try to start w/ disable cyl, repeat until finding.
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Will one of these work? (and test it at the distributor cap, not the spark plug)
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Patrick
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MAR 22, 03:46 PM
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| quote | Originally posted by Cliff Pennock:
Will one of these work? (and test it at the distributor cap, not the spark plug)
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Only if you ground it to the block, and not connect it to the spark plug cable. Remember, you're purposely trying to prevent the spark plug in the tested cylinder from firing.
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Cliff Pennock
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MAR 22, 03:58 PM
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But but but if I put it between the distributor and the spark plug (cable), the "light" inside the tester only lights up when the spark plug fires, doesn't it?
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Patrick
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MAR 22, 04:11 PM
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Patrick
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MAR 22, 04:15 PM
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Cliff, I don't think you're quite grasping the point of disconnecting the spark plug lead from one spark plug at a time. You don't want the spark plug firing! [This message has been edited by Patrick (edited 03-22-2024).]
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Cliff Pennock
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MAR 22, 04:51 PM
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I'm trying to find out if one of the spark plugs isn't firing (and if so, which). Pulling spark plug cables is one way of doing it. But I tried that once and even though I was wearing rubber gloves, got shocked pretty bad. Not doing that again. Another way of doing it is using a spark plug tester. If the spark plug fires, I will see it in the tester.
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