fatoldo
CB750 Member
1978 cb750 four k carbs.
hello all, I have rebuilt my carbs on my 78 cb750. the bike is back together and it runs. At first it had no power. then I adjusted the 4 carb screws till it seemed to have power. Rode it up and down the block a few times and all seemed fine. today, 2 months later i started the bike up. It started very easy. but after warming it up it didnt have enough power to get me up my drive way. Also one other thing. Before I started it i turned on the fuel valve. after a minute of it just sitting there gas started coming out of a hose. not sure what hose but it wasnt one of the bowl hoses.
History of the bike. I just got it last summer. it was running but again seemed to have no power which is why i took off the carbs. The bike sat since 2005 outside , uncovered till i bought it this past summer. its got 8k miles on it. it looks like hell but its all there and just needs TLC to make it nice again. I have rebuilt a carb or two on cars but never a bike. this was my first. I took them down to nothing and replaced all parts that came in the kits. As it is now, the set screws are turned out about 4 to 5 turns. It seemed to run the best this way 2 months ago. I thought it was a bit much (the4 or 5 turns out) but it seemed to like it. The original way i found the bike it was 3 turns out on the screws.
any ideas?
hello all, I have rebuilt my carbs on my 78 cb750. the bike is back together and it runs. At first it had no power. then I adjusted the 4 carb screws till it seemed to have power. Rode it up and down the block a few times and all seemed fine. today, 2 months later i started the bike up. It started very easy. but after warming it up it didnt have enough power to get me up my drive way. Also one other thing. Before I started it i turned on the fuel valve. after a minute of it just sitting there gas started coming out of a hose. not sure what hose but it wasnt one of the bowl hoses.
History of the bike. I just got it last summer. it was running but again seemed to have no power which is why i took off the carbs. The bike sat since 2005 outside , uncovered till i bought it this past summer. its got 8k miles on it. it looks like hell but its all there and just needs TLC to make it nice again. I have rebuilt a carb or two on cars but never a bike. this was my first. I took them down to nothing and replaced all parts that came in the kits. As it is now, the set screws are turned out about 4 to 5 turns. It seemed to run the best this way 2 months ago. I thought it was a bit much (the4 or 5 turns out) but it seemed to like it. The original way i found the bike it was 3 turns out on the screws.
any ideas?
