Well I was going to try and save this for the technical thread to keep from bringing these problems to the introduction area but here we go, cause theres more. lol
"Welcome. When it acts up, stop and drain the fuel from the float bowls to see how much comes out. If not an ounce or so it may be staving from a bad fuel pump. Add some Seafoam to see if that helps at all."
Fuel pump has been tested and proven to be operating. You can see fuel going to the carbs, and i've drained the bowls trying to clear the 87 out for the 93. My f4i took 87 which is why i didnt think anything of it. Owner said he was told to put high test in, though. I can only assume thats just this 1100. but i've seen all sorts of places that it should be fine with 87. and I mean, it made it the whole trek on it. But getting home and now having problems, i'm trying to eliminate whatever possible issues i can at this juncture. I didnt measure too hard when it drained the bowls but i'd like to think about that much came out.
I was also told by the original owner that it took a turns to get it started. Mentioned that in the cold he doesnt touch the throttle or the choke. Gets it started and just lets it warm up. All fresh fuel and the bike hasnt been sitting. He mentioned he'd take it out on 3 hour trips with the wife occasionally and rode it a few times a week. The only issue is he'd put oil in it occasionally. It does have a bit of a leak from the valve covers but that'd be a crazy valve cover job since its like an upper head it seems.
"More than likely stale old fuel but I would also check and make sure the battery is being charged. If the voltage drops enough it can cause the same symptoms"
Fuel is definitely fine, and the battery has been replaced.
Things that have been done (hopefully in this order, iirc):
-87 fuel drained and replaced with 93
-Spark plugs replaced
-Stator/rectifier tested good
---Test ride when bike died---
-getting no spark, replaced failed ignition coils with used coils. they tested out of spec.
-got spark, but then had trouble with fuel by this point. removed carbs and cleaned ports. minimal to no gunk, but sprayed anyways.
-noticed a pilot screw had escaped somewhere somehow on the left carb(to rear cyl iirc). replaced pilot screw. I did a dumb here and reset them both to 2.5-3 turns out. should've left the front cyl one alone.
while messing with it to tune it and get it started again, apparently the used coils died pretty immediately. yay old used parts... so we replaced them with aftermarket coils(similar to: this one)
but no dice. It was a long shot but we got nothing from it. it didnt even try. this one has a slightly similar design so we are going to try this one, as well
. Kinda running out of options at this point and i was able to return the first ones so heres hoping.
My guy is almost at a loss. we can see fuel moving to the carbs, we HAD spark. If these coils dont work, the next part we are looking at is the pickups. now THOSE havent been tested yet but thats where we're at.
Thoughts? lol new coils to try will be here Monday