Quote:
Originally Posted by dodgerdad
What does this indicate? Is it normal for carbs to "sync up" under throttle only?
https://youtu.be/pkDyL2g0E9I
(FYI: I haven't touched the sync screw yet. I recorded this and stopped. I hope to get some feedback before I go monkeying around with the actual sync.) |
That's normal for slightly out-of-sync carb; greatest difference is idle. Higher flow with greater resistance and vacuum makes difference insignificant. That engine in video has some other major trouble if it's only pulling 10in.Hg at idle.
Again, little amount off flow-rate due to sync, 5-10% max is not going to cause so dramatic difference in header temps that you can feel (did you use both hands at once? Then switched hands?).
Most likely you have some major difference in combustion issue:
- worn/broken clogged rings on one side
- worn/broken valves on one side
- ignition issues: plug wires, trigger wires to coil
1. Do compression test first.
2. Then we can investigate ignition
Do you have access to oscilloscope?