I recently started my 76 CB500T for the first time in years and Im getting a real nasty Idle. I figured a carb clening would do it but no luck.
As you can tell from the clip its a werid idle. I wasn't touching the throttle that was all the bike reving itself. One of cylinders is fine, the left side is the one with the erratic idle. I doubt its a back pressure issue seeing as both pipes are cut evenly but I wanted to make sure.
Do you guys think Im running the risk of a bent valve with poor back pressure?
Thanks!
http://media.putfile.com/CB500T-Exha...time-start-up-
PO cut my pipes, back pressure issue? Bent valve risk?
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By the time your pipes are as long as you've cut them back too it shouldn't matter too much. It's not totally a backpressure problem. You're going to need a rejet though, I'd also check the carb boots for leaks, and make sure that I actually cleaned and set the float heights on the carbs correctly.
I think the most likely culprit is a vacuum leak.
I think the most likely culprit is a vacuum leak.
Of course I'm generalizing from a single example here, but everyone does that. At least I do.
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