New to forum. I have had a '93 I think 853 for at least 10 years. Boss with 3000 hours on the Isusu. Thanks for having me. It would act like it was not getting enough fuel, but would run great in a bucket of fuel, so I changed the bulb, but that did not help.....changed the pickup tube and fuel line to the filter and it ran great for an hour or so, and then acted just it did before, starving for fuel, but would run... barely. It will not fill the bulb up again. I have not repeated the hose in the bucket of fuel, yet. The old pickup tube looked ok, but I did not inspect, thinking it was the problem. Any other ideas.......or do I have something in the tank stopping up the tube? I loosened the fuel cap and no changes. The cap is new within the last 100 hours. There is a check valve in the tube, so no reverse blowing correct? This has been a great site. I learned about the fan oil level on here, (it was low) and other insightful checks.