Cold #1 and #2 Exhaust header

[JOMPPA10]

Good day guys

Please, I need help pleeeeeeeeeease.

I received a FJ1100 as payment for labour carried out on a '78 Honda CX500 as a restoration project. The FJ is in absolute MINT condition. It is a true beautiful bike. (see the pic below)



However.

It sat under a carport for 7 to 8 years. The previous owner stopped riding it after it started to misfire. He did say he replaced the plugs with brand new ones. I already saw that the fuel is varnish and the tank is rusted terribly. So, I teared the carbs of, layered them in petrol for 48Hrs after tearing them completely apart, then used carb cleaner to clean the carbs to perfection, and then blew them out with my compressor.

Check out these clean carbs!!



Here is the this: I did this trice!! Yes, 3 times! I bench synced and synced the carbs, but Every single time I start her after cleaning the carbs, it starts after a while of playing with it, but it runs on only #3 and #4 cylinders. The headers on 3 and 4 gets hot very very quickly, nut 1 and 2 remains ICE cold. No heat at all. I cannot be a dead coil, as 1 and 3, and 2 and 4 runs off the same coil.

Please guys, I need help. I want to get this old timer back on the road, and show my fellow bikes here in South Africa (Gauteng, Krugersdorp) what a proper classic is all about.

carb diags or throtlle necs getting air from wrong place i think :flag_of_truce:keke

check carb diags then rubberboots to cylinders mine was diag into from carb to make it lean and owerhating icoud only drive 10 km then bike stops

[krusty]

I had the same problem, as mentioned in the OP, with my CB750. Cleaned carbs 3 or 4 times, new plugs points etc. I was at my wits end until I found a thread on the sohc4 forum that suggested new plug caps. Did that, problem solved.