What causes a Harley Davidson engine to misfire?
Click to expand… The front plug could be fuel fouling due to loss of spark enough to burn all the fuel, or could be a mechanical problem I E valve or compression problem, Have you verified compression?
What to do if your engine misfires at low speeds?
May want to try this. Get the tank fuel level to about 1 gallon so the holes (if any) will be above the gas level. Remove the fuel pump relay and jumper pin 87 to pin 30 (look at relay bottom) at the harness socket. Leave relay removed. With the engine off, turn ignition to on. The pump will run continuous and not just for a 2 second prime.
Why did my Harley Road King start cutting out?
Would be great for a while and suddenly start cutting out. Found a bad wire on the start relay under the seat. Harley Mechanic said that was probably not the issue but replaced the relay, changed the wire connection and hasn’t missed a beat in two years. The wire that you found that was bad on that 2002 road king under your seat…
When did my Wife’s Harley start to misfire?
My wife’s 2005 FLHTCUSE2 began to develop problems a few weeks ago. After a short ride, we stopped for her to get gas. On the way home, her Harley started to misfire and run poorly. I lost sight of her so I pulled over. After about 15 mins she showed up and said her bike would not stay running.
Click to expand… The front plug could be fuel fouling due to loss of spark enough to burn all the fuel, or could be a mechanical problem I E valve or compression problem, Have you verified compression?
What should I do if my rear cylinder is leaking?
Start the bike, take a can carb cleaner and spray the intake manifold by the head on the rear cylinder, if the bike stalls it’s leaking. A new set of gaskets will take of that. plug wires ??? If it is dropping the cylinder when getting hot, then I’d suspect either the coil or the ignition module are failing with heat.
May want to try this. Get the tank fuel level to about 1 gallon so the holes (if any) will be above the gas level. Remove the fuel pump relay and jumper pin 87 to pin 30 (look at relay bottom) at the harness socket. Leave relay removed. With the engine off, turn ignition to on. The pump will run continuous and not just for a 2 second prime.
Would be great for a while and suddenly start cutting out. Found a bad wire on the start relay under the seat. Harley Mechanic said that was probably not the issue but replaced the relay, changed the wire connection and hasn’t missed a beat in two years. The wire that you found that was bad on that 2002 road king under your seat…