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After sitting more than 6 years, I finally have had the time to work on her again. I took the carbs apart, cleaned them, replaced the float needle sets, bench synced them, then put them on.
I rebuilt the petcocks, cleaned the tank, replaced some vacuum line that was cracked, cleaned a few things up, put some gas in the tank, a charged battery, and cranked her over. She fired right up, but was running poorly.
The idle was too high, and I think 1 1/2 turns on the mixture screw was too lean. I lowered the idle and set the screws at, if I recall, 2 1/2. I got out my Morgan Carbtune and synced the carbs as best I could. It's really hard to get them perfect. I first synced 4 to 3, then 1 to 2, then 1 and 2 to 3. It seemed pretty close.
I took her for a run up and down the highway. At first, she was really having a hard time off idle, stalling out a bit. Once at medium to full throttle she was absolutely screaming. I forgot how fast she is. Really put a smile on my face. I mean, I was doing 85 in the blink of an eye.
There's more work to do, though. There's an intermittent fueling issue where she seems to get super rich for a moment, and boggy. Then it goes away and she's back to running excellent. Not sure what that's about. I'll be working on her again tomorrow, trying to get the mixture screws set better. I have a hard time "hearing" the idle change on 4 cylinder bikes. Not a problem on my XR650.
I rebuilt the petcocks, cleaned the tank, replaced some vacuum line that was cracked, cleaned a few things up, put some gas in the tank, a charged battery, and cranked her over. She fired right up, but was running poorly.
The idle was too high, and I think 1 1/2 turns on the mixture screw was too lean. I lowered the idle and set the screws at, if I recall, 2 1/2. I got out my Morgan Carbtune and synced the carbs as best I could. It's really hard to get them perfect. I first synced 4 to 3, then 1 to 2, then 1 and 2 to 3. It seemed pretty close.
I took her for a run up and down the highway. At first, she was really having a hard time off idle, stalling out a bit. Once at medium to full throttle she was absolutely screaming. I forgot how fast she is. Really put a smile on my face. I mean, I was doing 85 in the blink of an eye.
There's more work to do, though. There's an intermittent fueling issue where she seems to get super rich for a moment, and boggy. Then it goes away and she's back to running excellent. Not sure what that's about. I'll be working on her again tomorrow, trying to get the mixture screws set better. I have a hard time "hearing" the idle change on 4 cylinder bikes. Not a problem on my XR650.
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