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6 Posts
I've been reading here a lot lately and there is a lot of great information that has helped me immensely, but i seem to have hit a brick wall with this bike.
It is a 1976 CJ360T and when i bought it it would start/idle/ and run great but it would not rev up past 4 or 5 thousand rpm. I set the valves, cleaned/set the points and cleaned the carbs. While cleaning the carbs i saw that there was a couple slices in one of the slider diaphragms so i bought a new one ($90 - ouch!). I thought this was the problem since it seemed it was starving for fuel.
I got it back together and it ran a lot worse. I will spare you all the gorey details of my own personal hell, but basically i couldn't really get it to do anything consistently enough to actually diagnose the problem.
I ended up buying new points for it. The timing is set perfectly. I have taken the valve cover off to check the valve timing and it was spot on. The valve lash is spot on. The coils are good, i tested them on a good running CB350 last night. The carburetors are squeaky clean, i have been through them 3 times.
Last night, after testing the coils, i got it to start (takes a lot of ether and a sore leg) and the only way i could get it to run was by feathering the choke and the throttle (choke had to be at least half for it to run). I could not keep it running for more than a minute or so. I felt the pipes and only the left side was firing. I started it back up with the right spark plug removed and did not see any fuel vapor being shot out. I cleaned the carburetors yet again but this time i switched the jets/floats/and slides between the carburetors. After a lot of ether and a sore leg i got it to start but it seems like it ran the same way it did before, but this time on 2 cylinders.
That was about 3:30 AM last night, I will start it again tonight and see if it is running on one cylinder ot two.
Hopefully someone here has some insight, I am at the end of my rope on this bike.
Additional details:
the throttle butterflies look relatively synched, can't keep it running to vacuum synch them (and don't have the tools)
compression feels fine, though haven't tested it (don't really think this is the problem)
intake boots look fine
cam and rockers look excellent
when it does run, no smoke
Does the cam chain or rocker update apply to the CJ?
Thanks in advance
It is a 1976 CJ360T and when i bought it it would start/idle/ and run great but it would not rev up past 4 or 5 thousand rpm. I set the valves, cleaned/set the points and cleaned the carbs. While cleaning the carbs i saw that there was a couple slices in one of the slider diaphragms so i bought a new one ($90 - ouch!). I thought this was the problem since it seemed it was starving for fuel.
I got it back together and it ran a lot worse. I will spare you all the gorey details of my own personal hell, but basically i couldn't really get it to do anything consistently enough to actually diagnose the problem.
I ended up buying new points for it. The timing is set perfectly. I have taken the valve cover off to check the valve timing and it was spot on. The valve lash is spot on. The coils are good, i tested them on a good running CB350 last night. The carburetors are squeaky clean, i have been through them 3 times.
Last night, after testing the coils, i got it to start (takes a lot of ether and a sore leg) and the only way i could get it to run was by feathering the choke and the throttle (choke had to be at least half for it to run). I could not keep it running for more than a minute or so. I felt the pipes and only the left side was firing. I started it back up with the right spark plug removed and did not see any fuel vapor being shot out. I cleaned the carburetors yet again but this time i switched the jets/floats/and slides between the carburetors. After a lot of ether and a sore leg i got it to start but it seems like it ran the same way it did before, but this time on 2 cylinders.
That was about 3:30 AM last night, I will start it again tonight and see if it is running on one cylinder ot two.
Hopefully someone here has some insight, I am at the end of my rope on this bike.
Additional details:
the throttle butterflies look relatively synched, can't keep it running to vacuum synch them (and don't have the tools)
compression feels fine, though haven't tested it (don't really think this is the problem)
intake boots look fine
cam and rockers look excellent
when it does run, no smoke
Does the cam chain or rocker update apply to the CJ?
Thanks in advance