Thanks Ross.
That's probably the only thing I haven't checked and the rockers have crossed my mind one or twice. I haven't checked them because it just sounds so unlikely that something like that could be the cause but you never know.
I forgot to mention that the pulses coming from the rear...
Thanks Mike.
The cranking numbers were 126 front and 125 rear. My manual says to expect over 120.
I have not measured valve lift but did make sure the cams were timed. The cams were timed and appeared to look fine.
The ignition timing looked fine but was kind of difficult to set for whatever...
Thanks Zap for chiming in with all of those out of the box ideas. Right now that's exactly what I need but unfortunately none of those circumstances apply to me. My exhaust is single walled and my valve train is solid.
I loosened the rear push rods a little and its still running the same. I'm...
Its hard for me to believe that its the dual fire ignition system or the intake manifold because these are stock parts. Of course stock doesn't mean its the best but they should at least work as intended.
Once I get the rear jug firing I would like to dual carb the engine as well as convert to...
Thanks for the help guys.
I'm fairly sure that it is not a jetting or carb related problem because the front cylinder runs so nice.
I'm pretty sure its a mechanical related problem of some kind.
When I performed the cranking test I did it cold and warm and the rear cylinder still had...
Another thing I noticed is that the rear cylinder sounds like its firing great when first started (cold) with the choke on. It sound great for maybe 20 or 30 seconds and then it sounds like the rear cylinder falls off without me even touching anything.
So it seems like it fires great for a...
I swapped the rear head today just to see what happens and its still running the same.
Its hard to tell if its a misfire or not to be honest. I can feel (weak) pulses on my palm from the rear exhaust like its not missing a beat but every once and awhile I can feel and hear a good fire.
When...
Thanks again for the help guys.
I have not touched the plug gaps since I initially set em to factory specs.
The bike does still have the a dual fire ignition system. I had someone else recently tell to convert to a single fire setup as well. Problem is I don't have the cash at the moment to...
Thanks for the replies fellas.
This problem has been like this ever since I got the bike. I changed all of the ignition components just to rule out a possible ignition problem.
That's really interesting about the misfires Harley has right out of the box.
Yes the ignition setup on these...
Thanks for the quick reply.
The cams looked to be in good shape and weren't missing any lobes.
I'm pretty sure the ignition timing is fine cause the front cylinder is firing good and is really strong.
The engine only has one carb that feeds both cylinders. I've tried to different carbs and...
Hey guys. I found this forum through Google and was blown away at the knowledge I saw here. I found another reversion thread on here and did find some information useful but his problem was a little different than mine.
I have a 79 Ironhead and I'm fairly certain I'm dealing with some sort of...
