- Jul 10, 2020
- 161
- Boat Info
- 1981 310 Vanguard Express
- Engines
- Twin Mercruiser 6.2 MPI Horizon FWC inboards
If I pull the IAC muffler out of the throttle body, what should I hear if everything's working well?
When I do it I hear a very loud whooshing from the air getting sucked in. Should I expect that to die down as I open the throttle and the IAC isn't needed? Is it passing air to some extent all the time? I have a feeling the one on my port engine is always open - but if I pull the wiring plug the engine idles at 400rpm so I think the pintle is able to move.
Is there a way to tell by ear that the IAC valve is doing its job?
Thanks!
When I do it I hear a very loud whooshing from the air getting sucked in. Should I expect that to die down as I open the throttle and the IAC isn't needed? Is it passing air to some extent all the time? I have a feeling the one on my port engine is always open - but if I pull the wiring plug the engine idles at 400rpm so I think the pintle is able to move.
Is there a way to tell by ear that the IAC valve is doing its job?
Thanks!
