MALIBU American idle

Dezimade

Apprentice
Sep 22, 2021
58
8
Boston Ma.
Why am I getting a high rev in park?

I need to lower the idle….. any advice?

Rochester 2 barrel
Already tuned by a diesel mechanic
.
I am a new ūüźĚ when it comes to carbs.
Dez
 

Supa.Slo.SS

Apprentice
Aug 7, 2020
55
8
CA
Why am I getting a high rev in park?

I need to lower the idle….. any advice?

Rochester 2 barrel
Already tuned by a diesel mechanic
.
I am a new ūüźĚ when it comes to carbs.
Dez
Vacuum leak? I don't know Diesel motors but I assume the carbs work the same. If you follow the linkage for the throttle, you should see a screw, i.e. idle screw, and turning it in or out will move the idle position, changing your idle/RPM. But if it's been fine and all of a sudden your getting a high idle it's more than likely a vacuum leak.
 
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Dezimade

Apprentice
Thread starter
Sep 22, 2021
58
8
Boston Ma.
Vacuum leak? I don't know Diesel motors but I assume the carbs work the same. If you follow the linkage for the throttle, you should see a screw, i.e. idle screw, and turning it in or out will move the idle position, changing your idle/RPM. But if it's been fine and all of a sudden your getting a high idle it's more than likely a vacuum leak.
Thanks I gather vacuum leak.
 

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