sudden failure while riding

SO I just posted a question and I don't think it was successful, if it was I'm sorry the powers that be. Anyway. Been breaking in a new build. Got 100 miles on it as of Sunday and Monday night did another oil change and I added a 1/4 turn to the manual cam chain adjuster. Today - Tuesday - I woke up and rode for about 20 minutes. Stopped, got gas and then as a I started to ride home the bike got funny. Lost power, was hesitant and the exhaust was muffled. whole thing sounded anemic or just not 100% there. I've certainly had this issue before and I cannot recall how I fixed it. Pretty sure it has to do with the coil wires - mostly electric at least that was a previous and usually ongoing issue. The bike is mostly all brand new. Battery is good, charging system is good, no blown fuses, full power to gauges. Bike wants to start. Carbs are excellent - clean and rebuilt. Two days ago the bike was a screamer. Something got pinched or burnt or cut. Any ideas? I am at work at the moment - cant stop thinking about the problem. So when I get home ill pull the tank and check the coils/ wiring. I am sure ill figure it out but now that the bike is running and no longer a full time project I figured it would be good to get back onto the forums. Thanks ahead of time. You guys and girls are great.

First to do is check for clogged jets or water and fouling in the carb bowls.

I’ll pull the carbs when I’m done for the night if i don’t find an electrical problem. It really doesn’t feel like a carb issue although having poor fuel delivery could mimic this.

Sounds like spark plug leads. Check the ends for corrosion. If you find any nip off 1/4" on both ends or one end if they aren't replaceable.
Steve

So by leads you mean the cap or the end of the wire? Wires are brand new. They are in good shape. As with the caps. I have the NgK caps now - never had them before , decided to go that route this time. I just got home. So within 30 minutes I’ll have the tank off. I’m kinda thinking weird now from the carb jet clog comment. I did just fill up and even though it’s a reputable gas station I use all the time maybe I clogged more than 1. Ugh really don’t want to be pulling carbs. Pita

Are the coils new or the originals? If they're the old coils, I would ride the bike to highway speeds, then stop & feel them: they should be warm, not hot. press hard with your fingers. practice feeling them when the engine is cold so you don't get burned by the valve cover. Mine were getting very hot.

I know you said the battery is good, but I would charge it with a good motorcycle smart charger & do a load test.
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Have you had the tank off recently? Sometimes a wire can come loose underneath while installing the tank.

"got gas and then as a I started to ride home the bike got funny. Lost power, was hesitant and the exhaust was muffled. whole thing sounded anemic or just not 100% there."
Sounds like you got bad gas to me.

...... or perhaps diesel? Has been known to happen.

Check also for kinked fuel line

By Greybeard: Sounds like you got bad gas to me.

By JR: ...... or perhaps diesel? Has been known to happen.

I've gotten bad gas before & in hindsight his problem sounds familiar. I filled up at an out of the way service station a number of years ago, then after a few miles of riding the motorcycle started running weird then terrible. Luckily I was able to limp to another fuel place, drain the tank & add fresh again.
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martin_csr wrote: ................
I've gotten bad gas before & in hindsight his problem sounds familiar. I filled up at an out of the way service station a number of years ago, then after a few miles of riding the motorcycle started running weird then terrible..

That happened to me years ago on my BSA. The bike was running fine but was very low on gas. I stopped at a brand new gas station and filled the tank. About a mile later the bike's engine stopped running and wouldn't start. I removed the tank, emptied it, and walked to a different gas station. I put a gallon of fuel in the tank and carried it back to the bike. The bike then ran fine.

Here's something most folks aren't aware of - when a gas station is being built and has new tanks installed in the ground the tanks initially are very often filled or partially filled with water. This is to prevent the tanks from "floating" to the surface if it rains before the concrete surface is laid down. After the concrete is laid the water is pumped out of the tanks. However, some water always remains, so until the tanks have had gasoline in them and that gasoline is sold to vehicles some water will be pumped along with the gas. Usually the percent of water isn't high enough to prevent an engine from running, but sometimes .....................
Ed

So I had a crazy busy day yesterday. After work I pulled the carbs, cleaned out the bowls ( they were spotless but I did it anyway), I cleared all the holes in the slow and main jets, reinstalled the carb set and was done for the night. Today ill run it see what it does. Two nights ago I pulled the tank and the wiring seemed fine, I ran through everything and I don't think its the coils. I pulled all 4 spark plugs, and tested them - nice spark. Fuel delivery into the carbs is excellent. So to answer some questions. The coils aren't new but are green dyna coils that are probably 5 years old. They seem to be fine but ill check temp once i get it running. Tank has been off almost every night for two weeks. I had to chase down some wiring gremlins - replace a few pin connectors and then re-loom everything. But its pretty good wiring goes I think. The gas station isn't Brand new but i never use it, just happened to be on that side of town. The guy who assembled this motor for me did not put an inline fuel filter back on. Not sure why. I always ran one, so Now I'm thinking i stirred up some crap in the tank or from the pump and it went right into the carb set. Ill post tonight or tomorrow with results from the test run.