Rozbabbo750c
CB750 Member
Morning all, recently near completion of my 81 cb750c project. She runs l decent but I think there could either be a richness issue or weak spark issue.
When I pull a plug and check spark it's there but weak in my opinion. When I look at the plug its black which leads me to believe it's running rich.
The only mods are a K&N filter in the factory air box and a MAC 4into1 exhaust.
The carbs came off a stock configuration running bike and I have done nothing with them but install them onto my bike.
I took it for a quick ride and I feel like it wants to stall out once I come to a stop but it revs good. I dont notice any black smoke to signal too much fuel but the exhaust stinks bad.
Any feedback is greatly appreciated.
When I pull a plug and check spark it's there but weak in my opinion. When I look at the plug its black which leads me to believe it's running rich.
The only mods are a K&N filter in the factory air box and a MAC 4into1 exhaust.
The carbs came off a stock configuration running bike and I have done nothing with them but install them onto my bike.
I took it for a quick ride and I feel like it wants to stall out once I come to a stop but it revs good. I dont notice any black smoke to signal too much fuel but the exhaust stinks bad.
Any feedback is greatly appreciated.