View Full Version : NORMAL IDLE RPM FOR 325 HP Pleasurecraft engine

11-04-2008, 12:18 AM
What is normal RPM at idle for a Pleasurecraft 325 HP engine?

11-04-2008, 05:57 PM
650 around

11-04-2008, 06:30 PM
My engine dies if I reduce the RPM below 800 RPM at idle speed. I will check for vacuum leaks at this point. I guess the engine is running too lean below 800 RPM due to extra air from some place.
Do you agree?
What else should I consider.

11-04-2008, 06:35 PM
some motor need more

650 was an average figure
u want to go as low as possible until it stalls

11-04-2008, 10:10 PM
"That engine should maintain idle between 650 and 700 RPM if it is tuned to specs, and valves are sealing well. Check for vacuum leaks and then re-set timing to specs. If that doesn't allow idle to be maintained at 650 to 700, then do a compression check."