Re: I hate 4 Strokes

[joesnuffy]

"It ran for a couple weeks and then quit. I cleaned the carb over and over thinking it was a fuel issue. I gave up and put on a new carb this morning. Still the same thing. It will not start unless the throttle is advanced and then will only run if the choke is engaged. It will die if I attempt to throttle down or if I disengage the choke"

I had a 40hp Yamaha that I rebuilt the engine and it ran well for about 2 weeks although it was a 2 stroke it was doing the same thing yours is. I would have to run it with the choke partially on and run the throttle up a bit and it would not get up to wide open throttle. It had 2 carbs I must have cleaned them 4 times still wouldn’t run right. It ended up being a sheered flywheel key and the flywheel was about 180 degrees off but since BOTH spark plugs fire at the same time which is called "wasted spark" because even though the piston is at the bottom of its cycle it fires. This allowed the engine to run but just not correctly. I would check your flywheel key for being sheered just to rule it out I would bet you have a wasted spark CD type ignition. It was amazing it did run and it could at least get you back to dock worst case so I never thought about a sheered flywheel key.

I hope this helps I pulled my hair out finding the problem,

I would like to also thank Fleetwin he helped me to finally figure it out.

Joe

https://SecreLocal.com - - No Verify - Anonymous Adult Dating -