Oil & Fuel B7800 start and quit

[littleponderosa]

I have a b7800 and it was running fine. Next start it would start and die.
I assumed that I had a fuel problem and may have had. checked fuel filter replaced and still same thing checked fuel and it appeared that I had some jell in bottom of tank and black looking stings so I emptyed the tank and clean it and replaced with new fuel and It then would not start. Finally got some help and he was able to find the problem immediately. the air hose was collapsed when i commence to try and start it. he held it so it was open and started right away do not know why hose collapsed but now does fine. Could I have had some sort of vapor lock?

Did draining the fuel cause this?

 

[JD5210]

If this happens again, open your fuel cap half way. Many fuel caps are vented and there could be a problem with the cap.