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-   -   502 Mag Hi-idle after start (https://www.offshoreonly.com/forums/general-q/54518-502-mag-hi-idle-after-start.html)

Shooter 07-15-2003 07:21 PM

502 Mag Hi-idle after start
 
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

Steel Outlawed 07-15-2003 07:56 PM

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.


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