Re: 79 CB750 spark question and engine miss at speeds.

Posted by Hippie459MN on Jul 10, 2014; 11:25pm
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/79-CB750-spark-question-and-engine-miss-at-speeds-tp4052433p4052441.html

Thank you for the replies. I know last year the bike ran fairly decent and didnt have this stupid miss issue but was a pain to get to really idle at all. I let it sit all winter with gas in the carbs (I know, stupid me) and it gummed them all up so after giving them a complete cleaning and replacing the accelerator pump and when I removed the pilot screws, one was out 3 1/2 turns, one was out 2 and another 2 1/2 and another 2 turns so I put them back to what the service manual said for the 42-A carbs (1 1/2 turn out) and it seemed to run a lot better then it did last year but once I got it out on the road and up to cruising speed thats when I noticed the horrible miss in it but like I said, under any decent acceleration it would run just fine. No last year is when I got the bike and it looked nothing like it does now but when I did get it the prev owner had put tape over half of the pods and starting to think that was why it was working better as you stated with the whole vacuum thing. Just thinking out loud here. This is my first bike that has had these stupid CV carbs on them so its a learning curve. I might try putting some electrical tape back on them until I can get some better filters and re-jet the bike and see if that helps.

Also, I tried looking but couldnt find it. Maybe I am missing it or something but I can find the topic by shinyribs on setting up CVs for pods. Anyone has the link that would be great. And again, huge thanks for the help so far everyone.