r/cb750

▲ 3 r/cb750

Help diagnose engine noise!

My 1977 CB750F has a troubling rattle that I can't quite figure out.

I've checked the valve tappet clearances and adjusted the cam chain tension regularly, and recently, without any significant difference.

I'm either doing something wrong, or there's something else it could be.

Any ideas?

u/Better_Basis_5664 — 12 hours ago
▲ 1 r/cb750

1980 cb750c Hard cold start. Choke doesn't help

I recently rebuilt the carbs and it runs fantastic. It doesn't like starting though. I did make the mistake of not counting turns on the choke jet and it has a little standoff so it doesn't turn all the way around. Is this too far out?

u/longlostwalker — 16 hours ago
▲ 2 r/cb750

Brakes

I used a VIN lookup and I have an 82 750 nighthawk. I’ve ordered brake pads twice and the pin holes are much narrower than what’s on it. Anyone know what the hell is going on?

u/Bob_Dale_23 — 2 days ago
▲ 7 r/cb750+1 crossposts

Bubbly engine oil for cb750 1974

I own the bike for past 1 year and didn’t change engine oil since and i don’t ride the bike yet. I just start the bike once a month and ride it in underground garage. Today after the cold start i was checking the engine oil level is see foamy or bubbly layer on engine oil tank. Is this normal or something weird is happening with my bike?

Current issue: leaky head gasket. One oil drop every week.

u/Mukesh_Reddy — 10 days ago