On acceleration bike,warm,it backfires then stumbles,dies,an intermitant problem.Bike is a 97 vulcan1500 rebuilt last year due to pog failure.Has airbox removed,rejeted,vance&hines pipes,these mods done 10 years ago.Have owned bike since new.
Your carbs are dirty. and probably need to be balanced also... bring the bike bto a garage and have them cleaned by a profesional.... also after market pipes don't give your bike the proper back pressure .. that can mess up your carbs timing
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Hi,when starting bike you put the chock on,remeber this is to make a richer mixture for cold start,so when you start the bike put put the choke off a little bit as it warms up,other wise wat you are doing is couseing it to floud,so again as the bike warms up put the choke off little bit at a time,all the best.
Sounds as if your timing is not quite right. You need a manual, but The best I can offer is a 98: http://www.carlsalter.com/motorcycle-manuals.asp , it may help, but if you only have 1100 miles on it, I would be taking it to a qualified mechanic to be fixed. Up to you.
I'm trying to think away the possibility of a burt vave. Have you run the valve adjustment? Carb adjustment is very critical, Too lean will cause backfiring or stumbling and too rich will cause deccel popping at the exhaust. One other thing, Vacuum leaks screw everything up so it wouldn't hurt to ck all the vacuum lines make sure of no cracks or loose fits. Safly, you may need to just run it out and hope for it to clear up.Make sure the plug wires are not laying on anything. Take some electrical spray cleaner and rinse og the top of the coilnd the plug wire. I'll keep thinking on this and if I stumble on anything I'll you know. Ned
You need to replace your distributor. There has been many problems with these. I had the same problem with my 1993 villager and had tried many different things and none worked. I went to a junk yard and got a used distributor and now it runs fine. I would try this before anything alse.