Fun with fuel
The motor would start and idle fine, but after a run at normal cruising speed it would drop a cylinder when pulled back to idle. I decided to check the coils and found them to be within the ohm specs in the service manual. I even put one in the oven at 200-degrees to see if it was a hot issue and the ohmmeter readings stayed in the good. I swapped the top and bottom coil around to try to move the problem, but again, the issue persisted. I had a timing light aboard and checked every plug wire and found them firing. I started pulling plug wires while it was acting up and found the #4 cylinder (middle portside) was dead, not the #6. There’s an old saying about assumption being the mother of all mistakes and it proved correct in my case.
During this on-the-water diagnosis, I got a whiff of fuel. I pulled the air silencer off and stuck my finger into the carburetors. The dead cylinder’s carburetor was spewing fuel at idle and that usually indicates a stuck float. One $27.50 overhaul kit later, the carburetor is back on the boat and it runs nicely. The carb overhaul is straightforward and not at all difficult.
So much for the preamble, I hope it helps someone with a similar issue. Now, I’m on to the latest issue. When I started it on the muffs and hit the primer, I noticed some fuel leaking from behind the red handle on the primer solenoid. My question is whether or not an overhaul kit is available for the primer? I see the parts individually on the BRP site, but no mention of a kit. Seems like a kit would be a good idea, right?