Hey I need some help. My dad gave me an 89 flt, ultra classic electraglide. I am putting everything back together. I just had the carberator rebuilt, new plugs, new fuel lines, and when i go to start it, it back fires and there is no compression to the rear cylinder. I am not sure what went wrong.... any suggestions?

 

more info needed. was it running before you did the work?

 

Sounds like the valve is stuck open. Maybe a broken valve spring. The piston rings could be broken but I would bet on the valve train not working. You may need to pull the head.

 

We are going in now and checking for a valve stuck open. The bike runs great on the front cylinder only. The bike has been apart for a few years. Now that I have it I am trying to get it going. According to my Dad, i was running fine before he took apart to put new exhaust on it and new rods.

 

I agree. Either a valve stuck open or a pushrod that need adjustment.

 

The push rods in the rear cylinder are in the wrong holes and one is bent from this

 

Thank you everyone. It was a rod that was adjusted wrong and bent a valve! Oh well, just puts getting on the road for a few more days! Thank you for all the advice!

 

Now what is the best way to adjust pushrods??

 

My very thoughts !!!

 

It does sound like a valve is sticking open,especially if the compression comes back.Can't imagine why backfiring would make it happen.