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Volvo Penta not idling, idle issue

Smokemake

New member
I just bought a boat with two 8.1 Gil 2006
The starboard does not idle and the engine keeps going off. I have hooked up diacom to it and no codes show up. The boat is out of the water. I prefer to fix the issue before launching her.

Could it be the IAC? If it is, wouldn't the ECM show a code ?
Could it be bad fuel ?
Any help from someone who has experienced this before is really appreciated. I just don't want to start opening parts and change them if it's not needed.
 
Look around for loose/broken hoses and vac lines. Sounds like an air leak. Did you take it apart for any reason lately? If fresh air is leaking in past where the air flow sensor can sense it, it'll run like doodle.
 
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