502 Mag Hi-idle after start
#1
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Hi,
Does anyone have a 502 MPI Magnum that would run about 1500rpms when first started? After it heats up and runs a bit it idles ok. I was thinking there was an isse with the IAC. I hear a "shisshing" noise while this is going on. I'm hoping it's not metal contact but no oil loss or anything.
Thanx
Does anyone have a 502 MPI Magnum that would run about 1500rpms when first started? After it heats up and runs a bit it idles ok. I was thinking there was an isse with the IAC. I hear a "shisshing" noise while this is going on. I'm hoping it's not metal contact but no oil loss or anything.
Thanx
#2
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Did you by any chance add a aftermarket flame arrestor? If you did sometimes they will hit the throttle linkage and make it idle high because the linkage will not go all the way back.