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Old 06-23-2019 | 07:07 PM
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Originally Posted by F-2 Speedy
move the IAC from the good running engine to the other one and see if the problem follows
F-2 Speedy is correct. Simply swap IAC. And see if it follows. It sounds like IAC to me. I have also pulled them and cleaned the Pintle with Electronic Spray Cleaner and had good success before eventually replacing.
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Old 06-24-2019 | 05:34 PM
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Just installed a new one...any wagers?


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Old 06-24-2019 | 06:37 PM
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Wasn’t it...lol
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Old 06-24-2019 | 06:55 PM
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What is the part number for the IAC for the 500efis. I would like to get new ones for my motors.
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Old 06-24-2019 | 06:57 PM
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I’ll post here in a bit...changed cap and rotor. Still skipping and missing. Don’t have a coil.
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Old 06-24-2019 | 07:04 PM
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Also not tps sensor...swapped from motor to motor still missing.
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Old 06-24-2019 | 07:12 PM
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Other than coil and spark plugs...any ideas. Maybe injectors?
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Old 06-24-2019 | 07:58 PM
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YMan, that IAC looks Terrible. I will assume you pulled all the plugs from both engines and looked at them also. Just to see if anything is going on. Swap coil from good engine to bad one.

i would also like to see fuel pressures at different RPMS.

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Old 06-24-2019 | 08:56 PM
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Originally Posted by 1MOSES1
Other than coil and spark plugs...any ideas. Maybe injectors?
injectors,,maybe retorque the intake manifold also,pull the exhaust pipe and see if its wet,may be reversion.
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Old 06-24-2019 | 10:23 PM
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Originally Posted by cigrocket
YMan, that IAC looks Terrible. I will assume you pulled all the plugs from both engines and looked at them also. Just to see if anything is going on. Swap coil from good engine to bad one.

i would also like to see fuel pressures at different RPMS.
going to pull plugs and have a look Wednesday. barring any crazy findings...I might do coil next. Probably should do fuel pressure reading. Never done it before so I’ll probably have to do some research first. Running out of things to check...injectors might need to come next.
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