1988 Bounder 31ft 454 Chevy--Fuel Supply

[FrankScott]

The only way to reliably detect a diaphragm rupture is to remove the diaphragm itself and look through it into the light. You will see abrasions and even holes where the diaphragm is ruptured.Through these holes, the gasoline will get between the diaphragms and flow out through memorable holes in the gasket between the cover and pump body (if these holes are not clogged with mud, of course). In the engine, the gasoline will liquefy the oil, which will lead to a drop in pressure (up to zero), what will happen next is not difficult to guess, but I would advise you to buy https://cararac.com/fuel_tank_size/.

[udid]

Do you know whether or not the float is not sinking? A bad float will dump fuel down the intake with the engine off emptying it.