kappachampion
New Member
Hi, new guy here. First I'd like to thanks everyone who contributes to this forum because it has given me (and I'm sure others) a wealth of knowledge.
I recently rebuilt the carbs on my 97 speedster, took it out to test it and one engine runs beautifully. The other idles beautifully but when I give it any gas it boggs down and eventually will die. Usually happens around 1/4 throttle, ~3000 rpms. It does this if I ease into it or just punch WOT.
Sounds to me like it's running too rich. But I'm not sure exactly what to adjust since it idles great. I'll check the spark plugs tonight to make sure they are wet and confirm my suspicions.
Other information:
High speed and low speed adjuster set to factory (0,1 turn respectively)
I don't have the equipment to do a pop off test, so i didn't adjust the needle valve arm. (that may be the problem, but I thought this would effect the idle)
Everything seems to be adjusted identically to the engine that runs great.
Could it be the acceleration pump needs adjusting?
If it idles great I would imagine the low speed jet is adjusted fine and the high speed jet isn't supposed to be adjusted. Correct me if I'm wrong.
If it sounds like I need to do a pop off test, is there a way to do this without the recommended tools, or a place where I can get the tools cheap?
Thanks,
Mark
I recently rebuilt the carbs on my 97 speedster, took it out to test it and one engine runs beautifully. The other idles beautifully but when I give it any gas it boggs down and eventually will die. Usually happens around 1/4 throttle, ~3000 rpms. It does this if I ease into it or just punch WOT.
Sounds to me like it's running too rich. But I'm not sure exactly what to adjust since it idles great. I'll check the spark plugs tonight to make sure they are wet and confirm my suspicions.
Other information:
High speed and low speed adjuster set to factory (0,1 turn respectively)
I don't have the equipment to do a pop off test, so i didn't adjust the needle valve arm. (that may be the problem, but I thought this would effect the idle)
Everything seems to be adjusted identically to the engine that runs great.
Could it be the acceleration pump needs adjusting?
If it idles great I would imagine the low speed jet is adjusted fine and the high speed jet isn't supposed to be adjusted. Correct me if I'm wrong.
If it sounds like I need to do a pop off test, is there a way to do this without the recommended tools, or a place where I can get the tools cheap?
Thanks,
Mark