Hello all. Hoping someone can help me. I just replaced the head gasket. Put the head gasket on. Also took off the exhaust cover and broke two bolts in the process. Tried to get one out with an EZ-Out but that broke in there, so I just RTV-ed the heck out of it and put new gaskets and sealed it up. Also, I took out the thermostat a while ago and put the cover on, but it's got a top bolt broken in there somewhere so I also RTVd that and tightened it up best I can. Still squirts out some water, but not much.
Last, I replaced the impeller and now she pisses good. I went to start the engine with the water muffs and she pisses good. No leakeage on the head. Some at the thermostat cover, so I took it out for a spin on the ocean only to find out she retards after 1/2 throttle or so. Don't know why. Idle to 1/2 throttle is good, but after that, "bum-bum-bum-bum". Retardation. So I put it back on land and she's got good compression on all three cylinders. I cleaned out all the carbs just to make sure too. Nothing in the low or high speed jets. I didn't try to mess with the idle timing rod nor the throttle timing rod since I didn't mess with those before.
What could be causing the retardation? Oh, last thing...the tips of the NGK spark plugs were a little bent but not bad. They were sorta new. Any ideas?
Last, I replaced the impeller and now she pisses good. I went to start the engine with the water muffs and she pisses good. No leakeage on the head. Some at the thermostat cover, so I took it out for a spin on the ocean only to find out she retards after 1/2 throttle or so. Don't know why. Idle to 1/2 throttle is good, but after that, "bum-bum-bum-bum". Retardation. So I put it back on land and she's got good compression on all three cylinders. I cleaned out all the carbs just to make sure too. Nothing in the low or high speed jets. I didn't try to mess with the idle timing rod nor the throttle timing rod since I didn't mess with those before.
What could be causing the retardation? Oh, last thing...the tips of the NGK spark plugs were a little bent but not bad. They were sorta new. Any ideas?