Gyrobob
Serious Thumper
Offline
Posers ain't motorcyclists
Posts: 2571
Newnan, GA
Gender: 
|
Have you verified the transient enrichment valve is working properly?
Verslagen says, "How do you do that?"
Well, with the lack of test equipment most of us are subject to, I'll admit we can't actually test for valve actuation, and for the mixture enrichment that is supposed to happen at high rpm and closed throttle.
What we mortals can do, though, is to clean the carb thoroughly, with a good soaking, moving soft thin wire through the tiny holes, and blowing out everything with compressed air,.. but,... while at this task, noting the integrity of the transient enrichment valve, its chamber, and passages.
Both the carbs we rebuilt for the Dual RYCA build had muck in the transient enrichment valve areas, and almost certainly weren't moving freely enough to work properly.
If we still get some backfiring after we get these things on the road, we will consider the spring mod for this valve to increase its effectiveness.
So, overall, you got me. We don't have any way to observe whether or not the valve is actually moving, let alone enrichening properly.
I guess the point of my question was to make the poster think about it, and at least clean it out.
Whew.
|
Pages: 
