Motorcity81

Thought for sure the problem was a so-so lobe on the cam, but after freshening up the engine (rings, cam, valvetrain, heads) runs about the same as before. I've also swapped out the carb a few times (started with 650 DP but never could get an air cleaner to fit right, so I just put on a 600 with vacuum secondaries), new distributor (although it's a no-name one), also have new plugs, wires, etc. Cam is mild, just a step above stock, and I have 1.6 roller tips. I'm leaning toward the spark end of things, but would really like some input. Regards.

comp

need more info :thumbs:

LiveandLetDrive

Have you done any tuning to the carb(s)? You can't just slap those suckers on usually. I believe there's a tool to check for spark? I want to say just pull it off and see if it jumps to nearby metal, but that sounds dangerous.

-Chris

Motorcity81

I'm not concentrating on the carb since I haven't really seen a change with the original carb nor with the other two. The DP I went through and put it back to stock specs before running it, current vacuum secondaries one is new and I haven't done anything to it yet. Condition is noticable mostly at idle & part throttle. WOT appears to be ok, but it's a little more difficult for me to tell. I'm planning on rechecking my initial & total timing, & pull the plugs to see if I see anything there. I'd appreciate any other ideas. Regards.