sandkicker
Outstanding Contributor
"Ok, so I finally get to take
"Ok, so I finally get to take the wife out fishing last week after a very late in the season launch and on the way back the engine starts running rough. Very dis-inclined to run under 1500 RPMs. Docking was fun.
I checked the fuel filter, no water, but I replaced it anyway as it was due to get changed anyway. I checked the cap and it was a bit cruddy, as was the rotor. Replaced both. I scribed two lines on the rim of the distributor to match up with the rotor contact to make sure new rotor went back on correctly. Replaced the plugs. Old ones looked OK with no buildup but some reddish brown deposits on one side of the insulators.
I started the engine and it ran reasonably OK while warming up, i.e., until the enrichment circuit cut out (stopped audible hissing), then the engine started to stumble and the RPMs dropped, then it stalled completely. I shut the fuel valve off and still had the same problem, so its not a leaky float valve. It will run sorta OK if the enrichment circuit is on.
I set the engine to base timing mode and it looks like its 16 degrees. Was surprised to see it that far off, as distributor lock down was never touched, and the toothed sensor of the rotor is the same one as was on the engine before. Tried to set it to 10 degrees, but could not get engine to run long enough to do that. It's somewhere between 10 and 16 now...however, the mystery of the 6 degree difference from a rotor change is.... a mystery.
Did not have time to wait for enrichment circuit to reset itself as it was getting dark and looking like a T'storm.
I tried to find the idle mixture adjustment, but there apparently isn't one on this circa 2005 engine?
It's starting to look to me like crud in the idle circuit of the carb, however, tearing the carb apart means getting a new gasket and the nearest source is a 25 mile each way drive.
Does the blue permatex work OK as carb gasket replacement? I can never quite bring myself to trust the stuff.
I double checked the firing order and double checked that all plug connections are OK at each end. Engine has fresh fuel. Very low hours on engine... 30 hrs."
"Ok, so I finally get to take the wife out fishing last week after a very late in the season launch and on the way back the engine starts running rough. Very dis-inclined to run under 1500 RPMs. Docking was fun.
I checked the fuel filter, no water, but I replaced it anyway as it was due to get changed anyway. I checked the cap and it was a bit cruddy, as was the rotor. Replaced both. I scribed two lines on the rim of the distributor to match up with the rotor contact to make sure new rotor went back on correctly. Replaced the plugs. Old ones looked OK with no buildup but some reddish brown deposits on one side of the insulators.
I started the engine and it ran reasonably OK while warming up, i.e., until the enrichment circuit cut out (stopped audible hissing), then the engine started to stumble and the RPMs dropped, then it stalled completely. I shut the fuel valve off and still had the same problem, so its not a leaky float valve. It will run sorta OK if the enrichment circuit is on.
I set the engine to base timing mode and it looks like its 16 degrees. Was surprised to see it that far off, as distributor lock down was never touched, and the toothed sensor of the rotor is the same one as was on the engine before. Tried to set it to 10 degrees, but could not get engine to run long enough to do that. It's somewhere between 10 and 16 now...however, the mystery of the 6 degree difference from a rotor change is.... a mystery.
Did not have time to wait for enrichment circuit to reset itself as it was getting dark and looking like a T'storm.
I tried to find the idle mixture adjustment, but there apparently isn't one on this circa 2005 engine?
It's starting to look to me like crud in the idle circuit of the carb, however, tearing the carb apart means getting a new gasket and the nearest source is a 25 mile each way drive.
Does the blue permatex work OK as carb gasket replacement? I can never quite bring myself to trust the stuff.
I double checked the firing order and double checked that all plug connections are OK at each end. Engine has fresh fuel. Very low hours on engine... 30 hrs."