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Andy4639 · 02-01-2016, 07:31 AM

Take lines loose at carb and fuel pump. Blow that out. Then take the line back to tank loose blow it out.
Check the oil make sure you don't have gas in it also. Fuel pumps do go bad just like any other part.
There should be a sock filter on the tank hose also. If not you have a clogged filter maybe.

02-01-2016, 07:31 AM	#7
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: Do mechanical fuel pumps get weak? Take lines loose at carb and fuel pump. Blow that out. Then take the line back to tank loose blow it out. Check the oil make sure you don't have gas in it also. Fuel pumps do go bad just like any other part. There should be a sock filter on the tank hose also. If not you have a clogged filter maybe. __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.