OK, I briefly got my 5hp working fine but now the engine has recently began hunting and running irratically. Basically, you start it on full choke and it starts after 2 or 3 pulls which is fine, but it runs too fast (although that might be because the idle screw is wound all the way in). When you leave it to warm up and change the choke it cuts out. If you give it any throttle it conks out, or it speeds up a bit but not to WOT speed, and then bogs, then speeds up, then bogs.
I have got the mixture screwed 1.5 turns out, I have replaced the head gasket, the diaphragm, the tank gasket and the fuel, but still no improvement. I have checked the governer inside and no teeth are missing on the nylon gear either. Oh, and I have cleaned every orrifice I can get to in the carb including the pickup tubes more times than I can count!!
Now, my suspicions are that I might have warped the diaphragm somewhere when taking the carb apart all those times. Or that I have to adjust the governer arm, or something to do with the goverener, since that is about all it can be besides the carb and spark (I/C ignition upgraded :wink.
What else could cause all this? I am thick so I could be missing something really obvious, so fire away. :shrug:
Below are some pictures of my setup and the bike as a whole, just to give you an idea of what I'm dealing with. The throttle is my own design as you can see. It is a bit rough I know, but the engine worked fine with this same setup before it started misbehaving , so it isn't that. One final thing: there is no governer spring, only the spring shown between the cowl and the throttle on the carb.
Please help! I have been racking my brains and psent hours trying to get the SOB to run right, and I'm all out of ideas :freakout:
I have got the mixture screwed 1.5 turns out, I have replaced the head gasket, the diaphragm, the tank gasket and the fuel, but still no improvement. I have checked the governer inside and no teeth are missing on the nylon gear either. Oh, and I have cleaned every orrifice I can get to in the carb including the pickup tubes more times than I can count!!
Now, my suspicions are that I might have warped the diaphragm somewhere when taking the carb apart all those times. Or that I have to adjust the governer arm, or something to do with the goverener, since that is about all it can be besides the carb and spark (I/C ignition upgraded :wink.
What else could cause all this? I am thick so I could be missing something really obvious, so fire away. :shrug:
Below are some pictures of my setup and the bike as a whole, just to give you an idea of what I'm dealing with. The throttle is my own design as you can see. It is a bit rough I know, but the engine worked fine with this same setup before it started misbehaving , so it isn't that. One final thing: there is no governer spring, only the spring shown between the cowl and the throttle on the carb.
Please help! I have been racking my brains and psent hours trying to get the SOB to run right, and I'm all out of ideas :freakout: