Ok, so I'm still at it. But a couple snags. I did try to turn the IMS out from 1.5 to 2.5 turns. I'm no guru but that smelled a lot richer and it didn't seem to run as smooth. Also just for #$%*s I rechecked the timing and both 1-4 and 2-3 were dancing around a lot at full advance. Check out the video. I know it's hard to tell because the frame rate of my phone and the light timing aren't playing well with each other. But to me it seems like the plugs are starting to or are fouled? Or bad advance mechanism even though it's clean and feels good? Or bad coils?
I do have a box of 20 spark plugs I bought so I plan on replacing the plugs and checking and rechecking the timing and valve clearance. But right now the issues still are:
• Idle climbs and is varying
• Black smoke when revved (also when I went out for a ride my sister was following me to get gas and she said it smelled heavy of fuel. I was giving it the beans a lot so maybe my needle is too high and/or main jet is too big. Although it feels ok at 3/4-WOT.) When going from 4-4 exhaust to 4-1 with muffler does that really make it flow better than stock? Is it possible that I didn't have to enlarge the main jet as much as I did?
90 -> 110
I have a family friend coming down in a couple days who knows a lot and has more tools. I'm 30 and he's 65 and knows old Hondas well. And being that age he knows more about carburetors than I do. He has a good set of vacuum gauges, too. I can't get my carbs synced when I use the Motion Pro manometer with the blue fluid. It runs rough but all the fluid levels are even.
I've also been looking for air leaks and can't find a single thing.
So I'm almost at a loss but I'll keep you guys posted.
Final question, this post has morphed from a splitting cases topic into...pretty much a carb/air leak issue or something else. Do I have the authority to change the title to a build thread or is that frowned upon?
Thanks guys!
---
1978 Honda CB550K
