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Can't get Cyl 3 above 350° & fuel in vac line

Posted: Fri May 26, 2017 7:51 pm
by mvk24
Hey guys been using all of your write ups over the years and my se a is riding well. HOWEVER it still feels like there's some ponies I haven't unleashed. I did a total rebuild to the carbs.( along with rebuilding the entire bike) New gaskets, New float needles, adjusted float heights (Thank you Radare) changed to #20 pilots and put brand new mains while I was at it. I used the bb trick to sync the carbs. And it has a brand spanking new fuel pump. New intake boots and new air filter.

Here's the 2 issues.

Using the infrared temp method cylinders 1, 2, 4 I can get to 500° no problem. However cylinder 3 will not go higher than 350° and it doesn't matter If I turn it 1 turn out or 7 turns out. Every combination of turns keeps cyl 3 between 200-350°. Thoughts?? I pulled the spark plugs and they're a little dirty but nothing crazy or fouled.

Second I know this sounds crazy but there is no thread on it anywhere online... I have fuel in my vacuum line. Yes I checked already over and over and it's 100% The vacuum line. I already rebuilt the petcock with new gaskets twice and I cannot figure out how or why a small amount of fuel would be bubbling with the passing air through the vacuum line. I changed the line twice also and I cannot figure it out. Like i said it's not the fuel line so it's not full its just like wet on the inside and I can see it bubbling slightly as it's idling.

The set of carbs I'm using are California that I got off a guy on here and I vacuum capped the 2 ports on the front of the carbs above cylinder 1 and 2. I'm trying to get the original rack back from my mechanic friend to swap all the parts over to those (NY) rather use 48 states carbs than have the California ones with the inlets all capped. Any insight would be great as I couldn't find either of these 2 issues in the archives over the past few weeks.

Happy Riding Fellas