Backfire help?

Hi all, I have a 1998 1200 sportster , a while back I had some issues like the bike was shutting off and then coming back on with a big BANG! It did this a few times. then would go away and not do it again for a while, then the charging system quit charging , So,, New battery and a voltage regulatur later we are charging again , and I changed the coil just becouse I thought maybe that what was cousing the ocational BANG! So we went on a couple poker runs about 250 300 miles or so and she ran great , started to ride it to work the other day and 10 miles up the road she starts again, just like someone is shutting the swich off and turning it back on, Not so much if ya baby it , only if ya try to use power, I am a Mechanic, not a bike mechanic. I've talked to the harley shop mechanic and he wants to rejet my carb, I can not seem to get through to him that its not a carburator backfire, its something else, any ideas?? Also how hot should my oil run? I run about 200 on a real hot day, is that too hot? thanks in advance for any advice,
Weaver

200* is pretty good...do you notice if you loose all power when it happens or just the ignition circuit?? Look for loose grounds and try wiggling the ignition switch with it running to try to make it quit...good luck, intermittent electrical problems can be fun:gah:

Thanks Lucifer, I will check all grounds and such, I can't get the bike to do it at Idle, Or in nutural for that matter, It only does it on the road under load, it shut's clear off and come's back on with a bang, then all power is back and off ya go till ya accelarate to hard again and she'll do it again, I baby'de her home with out accelerating to hard and she didn't do it. baffleing for sure,lol,

As far as your other issue goes, I would start looking at the VOES and the pick up under the cam cover. My hunch is that it is one of those two. If those check out, then start going with ignition module. If you need an ignition, I think that you use the same module as a 1996 and I can help you with that problem as I have one sitting around.