A lean low end...

[ToRqUe]

I started up my truck 2 day an tried 2 finish tunnng it. It started up fast an i warmed it up. i first attacked the low end becasue the High end is runnin' very good. As soon as i turned the LSN no more wheelies but still a little punch an it was runnin a very high ideal so i tried 2 adjust that but it wouldnt slow down it would only get worst or stay the same no matter what way i turnned it. After 2 runs up an down the street it cut out on mewhen i hit the gas. As i was walking up 2 it i saw about 20 big bubbles in my fuel line... the carb couldnt of had over heated becasue i had just started 2 run. i can't figure out y those bubbles were in there ... last i remember my truck was runnin very good ???

Any help is better than none...

 

[olds97_lss]

Replace fuel lines?

Did you adjust your idle set screw after adjusting the LSN? The LSN or HSN will affect the idle. If it's rich, it will slow the idle down, lean, the idle may not slow down for quite awhile if at all.

I recently had a clutch problem that I thought was a carb problem. After a high speed pass, the engine would stay rev'd up for a few seconds. It took a few passes for me to realize it would slow down if I actually locked up the brakes immediatly after a high speed run. It got to the point that it was killing the engine since it was dragging so bad.

 

[windy city maniac]

those bubbles could b a leak in ur fuel line,fuel tank, or maybe even a compression problem.i would check the the fuel line and tank 1st. richen the HSN a little and should get the wheelies back!