Now for my issue. I have an 81 GS 750L with 35000 miles on it which I’ve had for four years now that was leaking oil through the head gasket. I purchased some gaskets took the engine apart and replaced the 3 gaskets. I put the cam shafts back into the bike making sure that the cam chain was set properly on the shafts according to the instructions in my Clymer manual (not everyone’s favorite I know). At this point do anything to the carburetors because I had cleaned them about two years ago with the instructions from this site (which by the way worked excellent, very detailed instructions!) and they were working fine before the engine was taken apart.
After getting it all back together I put new spark plugs in and threw the battery in attached the airbox and cranked it over… that’s all it would do is just turn over but never starts or gives any indication that it wanted to start. I pulled all four plugs (one at a time) and checked for spark which they all had. I sprayed a little starting fluid into the air cleaner but the starting fluid had no effect on it whatsoever. The boots on the air cleaner were connected nice and snug to the carburetors. I drained the gas from the carburetors then with the petcock on prime and I could see the gas flow through the inline gas filter until apparently the bowls had gas in them and then stopped flowing.
I then removed and cleaned the carbs because it seemed as though there was not any gas getting to the engine. Put the carbs back on the bike with the air screws out 2 turns and cranked it over with the same results, turns over fine but never starts (it does make a compression sound from the exhausts).
My petcock used to be permanently in the prime position (could never get it to move, was like that since I’ve had the bike) but since taking it out of the tank this time it now moves freely for some reason, so I performed the test that I found on this site. I pulled off the vacuum hose from the carburetor with the petcock in the run position and sucked on the end of it and gas would flow out of the outlet tube attached to the tank, the vacuum hose would suction onto my tongue when releasing the suction and the gas would stop flowing. With the petcock in the prime position for too long of a time there will be some gas overflow from the carburetors (normal?). I have checked all fuses and every electrical connection I could find. I have searched through the technical section until my eyes are crossed.Hopefully someone will have an idea of how to get her going any suggestions will be greatly appreciated.
Thanks.
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