Question about GAS Motorcycles
If its stale possibly. If its carbureted and the stale gas has sat all winter with no stablilizer- quite likely the carb passages maybe gummed up and blocked- seen this myself..Drain old gas and refill. if fuel injected there may be another issue it should at least fire if the fuel is getting to cylinders and theres a spark.. if a Carb.. the same.. so if carb and no fir or no smell of fuel from exhaust- carb passages clogged or petcock..
Posted on Apr 13, 2015
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Posted on Jan 02, 2017
SOURCE: New motorcycle gas tank
oily residue would not harm the engine...unless it had alot of dirt in it...was it a BRAND NEW tank, or refinished? A small ammount of oil in the fuel may make it smoke a little from the exhaust, and foul the plugs, but it would eventually go away as you refilled the tank.....do you have a fuel filter installed?....ALWAYS flush then new tank when you install...if it continues after another tank of gas , let me know and we will figure it out
Posted on Apr 19, 2009
So you know that you are getting spark but no fuel. Do process of elimination. Start at the pet-****, then check the fuel line to the carb, if fuel is getting to the carb then you need to prove fuel is getting through the carb. Might be debris between the needle and seat or debris inside one of your jets. take your time, good luck.
Posted on Apr 27, 2009
Sounds like you've lost either spark or fuel. Take another set of spark plugs and plug them into your spark plug wires. Do not remove the plugs from the head. Spin the engine and watch for spark. If no spark, first check the "run/start" switch. If it's alright, you need to check the fuse for you ignition system to see if it's blown.
On fuel injected engines, you have a fuel pump. Check the fuse for the fuel pump. Listen for the fuel pump to run when the switch is turned on.
If you bike is carburated, check the petcock. In 1996, H-D went to a vacuum operated fuel petcock. These things are notorious for giving problems. Either the diaphragm gets a hole in it and shuts off the fuel or the vacuum hose comes loose. Check the vacuum hose that comes off the back of the carburetor and runs to the VOES switch and the petcock. You may have to remove the petcock to service the diphragm in it.
If you remove the petcock, there are four small bolts on the backside. Remove the four bolts, lift the plate and theres a spring and a diaphragm behind the plate. Check the diaphragm for holes. If you find hole, replace the diaphragm. If not, replace everything and test the petcock by applying vacuum to the rear of the petcock while blowing though the fuel line nipple. When you appy the vacuum, the petcock should be open. With no vacuum, petcock should be closed. Good Luck, Steve
Posted on Apr 28, 2010
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