OK, I've mentioned this issue before, but in other threads. Thought I'd give it it's own thread.
After running for a while, the bike will not hold an idle. It will hold an idle when first started and after idling a while when it is warm. After I have been riding, it slows down, then dies. This happens especially immediately after running at over 50mph for a few miles. It always restarts with the electric start, always.
Otherwise, the bike runs perfectly. It starts very easily and runs smoothly at all rpm levels.
Here is my setup. This is a '79 with a stock engine and BS34 carbs. They are clean...clean, clean, clean and I have a filter in the fuel line. Air filters are stock and clean. The idle mixture screws are 3 turns out. The valves have been adjusted and are in spec. The diaphragms are fine. There are no intake leaks.
Last week, I was setting the points gap and they were somewhat eroded (the problem was present before this). I replaced both points and the condenser (still there). The coils test within spec. cold, but I do not suspect the coils. If it was hot coils, I would expect it not to restart until cooling a bit. As it is, it will restart before I even stop.
I also do not suspect battery issues- again, it always restarts with the electric starter.
Thoughts?
After running for a while, the bike will not hold an idle. It will hold an idle when first started and after idling a while when it is warm. After I have been riding, it slows down, then dies. This happens especially immediately after running at over 50mph for a few miles. It always restarts with the electric start, always.
Otherwise, the bike runs perfectly. It starts very easily and runs smoothly at all rpm levels.
Here is my setup. This is a '79 with a stock engine and BS34 carbs. They are clean...clean, clean, clean and I have a filter in the fuel line. Air filters are stock and clean. The idle mixture screws are 3 turns out. The valves have been adjusted and are in spec. The diaphragms are fine. There are no intake leaks.
Last week, I was setting the points gap and they were somewhat eroded (the problem was present before this). I replaced both points and the condenser (still there). The coils test within spec. cold, but I do not suspect the coils. If it was hot coils, I would expect it not to restart until cooling a bit. As it is, it will restart before I even stop.
I also do not suspect battery issues- again, it always restarts with the electric starter.
Thoughts?
Last edited: