Ski Boat Forum

General Category => General American Skier Discussions => Topic started by: Miller on August 22, 2020, 09:56:46 AM

Title: inmar engine quits after 4 min at idle
Post by: Miller on August 22, 2020, 09:56:46 AM

American Skier Indmar engine quits after 4 minutes consistently

Title: Re: inmar engine quits after 4 min at idle
Post by: Miller on August 22, 2020, 10:20:36 AM

Tim Miller here again, I was wondering if the electronic ignition module could be going bad which in turn is getting hot which could be making the motor shut off at the 4 minute mark. I had bought a new marine 4 barrel Holley carburetor a couple months ago, and when I installed it the boat ran well, however the last few times I started it the boat will only run for a short time before shutting off. I know that the carburetor didn't have an angled mounting plate on before, so I'm not thinking that that could be the issue. Because the carb. does sit at a pretty good angle. Please help me with any insight that you may have. Tim in Tampa 

Title: Re: inmar engine quits after 4 min at idle
Post by: RonT on August 26, 2020, 10:25:59 AM

Here are a couple things to check given your observations:
1) Ign. module could be doing this, check for spark at one of the plugs when it stops running
2) Ign coil could be going out (overheating)
3) Fuel starvation from a blocked fuel vent (crack the fuel fill when she quits & listen for a vacuum sound or run with it cracked for a few minutes)
4) angled base on carb is normal
5) New carb choke way out of adjustment (staying closed)

Title: Re: inmar engine quits after 4 min at idle
Post by: Miller on August 26, 2020, 06:50:11 PM

Thanks for replying Ron I will check those things. I did replace the coil 6 or 8 months ago, but I will check to see if it is getting Hot.