Topic: Throttle issue?

[Feltier]

Hey everyone, I have a 74 CB750 and have a problem I just can't figure out. My bike was running fine for a while but for some reason it will not take any throttle. I can get it to start and idle fine, but the second i start to accelerate it just dies. (A kind of bog and the occasional sputter) This might have been a developing problem when I had to ease on the throttle before i could go wide open. My assumption is that it is running lean. But again I don't really have a clear idea what to do.

[JMURACN]

pull the plugs and tell use what they look like.  pull all 4 and make sure you keep them in order... tell us what each one looks like, and we should be able to narrow it down a little more for you.  rich/lean, oil burn, bad spark, etc. 

[Feltier]

Sorry about the late response, been busy. I pulled them out and they seem to be black. My guess is that they are carbon fouled. The No. 4 was kind of Olly so that might mean my head gasket is bad. But I really don't know what I'm talking about so any help is good help. (Unless I find the answers myself  ) Thanks.