4.0 misfire in 1 and 2. - Pirate4x4.Com : 4x4 and Off-Road Forum
 
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Old 04-06-2013, 02:20 PM   #1 (permalink)
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4.0 misfire in 1 and 2.

92 4.0 swapped into a scrambler. Been running great for years. It started bogging after deceleration.(automatic) took throttle body off replaced iac cleaned the rest no joy. Noticed it didn't run any worse without #1 plug wire off it but it has spark so I swapped the injectors from 1 and 2. Replaced injector after I noticed #2 no fire. The realized 1 and 2 are no fire. Apparently it was running on 4 5 and 6.
Maybe the cps?
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Old 04-06-2013, 04:09 PM   #2 (permalink)
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i would do a compression test before you start throwing parts at it.
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Old 04-06-2013, 08:52 PM   #3 (permalink)
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Actually it's not getting fuel in 1 and 2. Very strange especially since I put a new injector in #2.
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Old 04-06-2013, 09:32 PM   #4 (permalink)
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Have you tried a noid light?...
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