Reply To: RD-17 bottom plug fouling – no high speed power

[The red boat]

thank you for the reply. That was very helpful.
I’ll verify the things you mentioned.

– the rebuild kit i used on the carb included a nozzle gasket. I verified that it was seating properly when i opened the carb back up.
– i’m running it on the pressure tank
– how would one check the vacuum switch? is there a way to do that? I’m still leaning toward the carb as the culprit since it ran perfectly before I changed the carb out for a different one. But I would like to check that vacuum switch too!

I am almost positive it is idling on 2 cylinders but I will verify. I’ve pulled the plug wires before to check it and remember how poorly it idled. It isn’t doing that currently but it would be good to check it again.

When i swapped out he high speed needle and ran it in the tank, it seemed to be able to achieve the proper higher rpm so it would appear that whatever was ailing it is working now. Both plugs look fine after 15 – 20 minutes in the tank at various rpm speeds.

the one plug being fouled and the other one being merely “wet” is what stymied me.

I’m taking it back out on the water this weekend to see how it goes.