I have a 06 FLST today was second time she left me on the side of the road. cranks but not fireing up. after I trailered it home I pulled the plugs and found the front plug was white ( no fuel) back plug was light tan. any idears on where to look would help. O ya it now runs agane but seams like its missing on low speed.

 

Is it EFI??? if so could be fuel filter, fuel line in your tank, or fuel pump

 

fuel filter was changed 4 mo. ago. runs strong when your giving her gas, just dont seam to run smoth at crusing. yes its EFI

 

Pin holes in fuel line, as stated above.

 

I agree... check the line

 

If it happens at or below half tank, I would say pin hole. If it happens with more fuel than that, I might say regulator, but either way it sounds like fuel issues.

 

Pin hole in line OR possibly has the 8 degree injectors. There was a hd service bulletin to change these out to 25 degree injectors. This was early 06 bikes. Do a search on here or Google, there is a lot of info on it.

 

Ok first off, you need to give us more info on the bike, ac, pipes, tuner, efi, carb, hat mods have been done to it, even lengthening the hand control wires could be issues, latest service that you or tech did. More info please

concerning the plugs, with the fuel today you really cant read plugs anymore, unless they are soaked or oil covered.

since you live in corrosion state, fla. you could start with the coil connections, see if there is any rust in the coil towers. do you have a digital meter? check the resistance of the primary and secondary cicuits, then the wires.

if the electrical is ok then check the fuel, open gas cap and turn bike o , if you here gurgling then you have the dreaded pinhole, if the fuel pump runs on then the same.

open your ac and look into the TB, dirty? Take a rag and stuff it way into the back, get some map sensor cleaner, @ 12 oclock on the tb you will se the IAC, spray that good, to test it turn bike on and it should moveup and down after you shut off. Look through your butterfly at about 11 oclock you will see the IAT spray that as well, at @ 2 oclock you will see where your map sensor sits, this needs to be clean, spray away, dont jam the tube up the hole though. clean up the rest of the TB and your done cleaning.

next you will need to check the sensors on your bike, TP throttle position, IAC intake air control, IAT intake air temp, MAP manifold air pressure, ET engine temp, CKP crank position, and speed sensor on tranny. All of these contribute to the ECM giving fuel to the motor, and one or more can cripple the bike.

welcome to EFI...... Oh any codes thrown on the bike?