I added a bit of bad fuel to the tank and still the bike ran fine that day. The next day i went to start it up and it wouldn't start. I emptied out the gas, checked the fuel and air filters, and even added fuel treatment with a bit of new clean fuel and the bike still won't turn over. My spark plugs should be good since they were recently replaced. Any suggestions before i take it to a shop?
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Re: I added a bit of bad fuel in the tank
Hi and welcome to FixYa,
Initially, try to drain the carbs themselves. Each carb has a drain screw at the bottom specifically for this purpose. Just turning these drain screws a couple of turns counter-clockwise would allow the fuel inside the bowl to drain out through a hose. Normally, I do it with the tank's fuel valve open (PRI) so as to enable the gas to flow freely, the fresh gas to wash the inside of the bowl and prevent the float from sticking in the open position. In some instances that the the tank's fuel valve open is closed when doing this, the carb has a bad habit of overflowing. Of course care and safety should be in mind as raw fuel would tend to be draining out.
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You should have the injectors cleaned, As fuel gets old, the most burnable part of it evaporates This leaves a very liquid gunk behind, the gunk contains some very big bits of rubbish, (compared to clean fuel or injectors) it sounds as though you have blocked injectors. If you give them a good clean and fill the tank with new fuel you should fix the problem.
It sounds like one of two things. One, the jets in the carb may be clogged. The way you're describing it, it sounds like the main jet in the carb is clogged. You're running off the slow speed jet. When you open the choke (enricher) you're adding a bit more fuel and air improving the performance a bit. If it's te carb, it needs to be completely disassembled and soaked in a professional quality carb cleaner and thoroughly gone through to ensure all passageways are clear.
The next problem is the exhaust system. I've seen bikes do this before when changing a camshaft. Remove a stock cam and install a high performance cam and the bike will no longer run. The reason is that the baffles in the exhaust system were so restrictive that the engine could no longer "breathe" with them in there. Removed the baffles and the engine ran fine but was too loud for the owner's liking. We replaced the stock system with a free flowing high performance muffler system and the bike ran great.
never leave a bike in hard rain-water was forced into carb areas like the air jets and now its runnin rich causing incomplete burnin--need to take it off engine and dry it out-and air blower from a tank works-but if bad disasemblys in order
DRAIN CARBS FROM PETCOCK AT BOTTOM OF EACH CARB MAKE SURE FUEL DRAINS COMPLETELY THEN TURN FUEL BACK ON, IF THIS IS AN INJECTED MODEL DRAIN TANK AND FLUSH THEN RUN IT HARD FOR 20 MILES OR SO, MAKE SURE YOUR OIL LEVEL IS OK
The sputtering was a bit of water in the bad gas you got and the smoke was probably from a bit of diesel fuel that was put into a gasoline storage tank in error. The temp guage going bad is just one of those things that happen from time to time, probably just a bad sensor. The idle speed change is a bit quirky but easy to adjust. Stick a fresh set of plugs in the bike and the starting problem should clear up.