millsmobile
CB750 Enthusiast
Alright so I got the valve clearances sorted on the bike. Everything on the exhaust side is .005 or .006, and one .007, and on the intake same .005 or .006 with one .004. The #4 exhaust previously had several .003 and a .001 which coincided with the lowest compression reading at 90psi. Replaced the cracked cam cap "D", new valve cover gasket, new valve cover bolt rubber. Started right up with no leaks, but as it warmed idle started to drop, and if I gave it gas it would rev rough, and then die. Checking things out after warmup, the #2 exhaust was significantly less hot than the other 3. The carbs currently have pods on them, and I'm probably planning on moving to a different carb system.
I believe the #2 carb is the reference, so I'm curious if these could be that far off to cause misfiring on #2? That carb is leaking a small amount of gas out the drain tube, and it's also collecting a small amount on a plate a little higher than that and off to the side.
I'm going to recheck compression & spark on all cylinders next time I get over there to work on it, what else should I be looking at?
If everything else checks out I'm possibly looking to replace the carbs, these have pods on them and I don't really want to rebuild them to still not run right.
I believe the #2 carb is the reference, so I'm curious if these could be that far off to cause misfiring on #2? That carb is leaking a small amount of gas out the drain tube, and it's also collecting a small amount on a plate a little higher than that and off to the side.
I'm going to recheck compression & spark on all cylinders next time I get over there to work on it, what else should I be looking at?
If everything else checks out I'm possibly looking to replace the carbs, these have pods on them and I don't really want to rebuild them to still not run right.