Question: Air in fuel line and only one cylinder firing

[Sledder]

Hi guys,
I recently picked up a 82' Trailfire.
Replaced all fuel lines, gas tank grommet, line in tank and fuel pickup screen (in tank).

The sled will fire and run rough for just a little bit.
The fuel lines have all have air in the lines, even the one coming out of the tank.
Both cylinders have spark, but when I check them after it runs for a bit, only one of the spark plugs is warm and the other is cold.

Does this mean my fuel pump is shot, or is there more to the mystery?

Thanks,
Scott
Riverside, Iowa

[AirborneX4Special]

Scott
LX or 340?
It will take a little continuous running time to bleed the fuel lines. Your pump must be doing something; check your crankcase impulse line. If this sled has been sitting idle for a few years you might need crank seals. That could explain the drop out on one side. Swap the plugs and see what it does.

Pat

[JDT]

I am going with a bad seal(s) here also.