1989 Cherokee cranks no start.
#16
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Location: Langley BC
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Year: 1989
Model: Comanche (MJ)
Engine: 4.0 L
Just got around to putting the used icm in, and we have spark! Sadly not starting still, but sounds very close to starting. Looked at every spark plug, and a few of em are sparking orange, so pretty weak. Side note, when starting, after a few cranks I hear a blowing noise? Like pressure from somewhere is being relieved. I’ll attach a sound clip in a little bit. Any ideas?
#17
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#18
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Year: 1989
Model: Comanche (MJ)
Engine: 4.0 L
At the time it seemed slow, but now that I have spark it is cranking to where it is almost starting. I believe the cause is weak spark. Gonna swap the injectors around to test
#19
Senior Member
Note from DJ
... If you are checking for spark this way you need something that has an insulating handle in your hand; if not your body may become the shortest distance for the electricity to travel. This is not a good feeling!
What I use a number two fillips screw driver.
... If you are checking for spark this way you need something that has an insulating handle in your hand; if not your body may become the shortest distance for the electricity to travel. This is not a good feeling!
What I use a number two fillips screw driver.
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