The motorhome is hard to start after sitting 2 or 3 days. I think the back fuel filter system may be the problem.
Any ideas?
What primary fuel filter do you have?
The Winn system has been superseded because of issues with air getting into the system.
Go to Parker-Racor's site and enter your fuel filter system number for info.
Also, be sure to check fuel hoses for cracks that could be allowing air into the system. The inlet side of the primary fuel filter is a good place to check for cracks. It IS at that age.
Does your primary filter look like this? The clear plastic bowl has a stainless steel screen if you have a bunch of algae in your fuel this will be full black flakey goo. It is enough to stop fuel from getting to the engine. The other fuel filter is on the passenger's side of the engine. These is a valve to drain it on the bottom, drain then remove filter. Access from underneath of from the bedroom.
If you replace the clear plastic bowl it comes with two "O" rings but, there is also an "O" ring up inside each metal connector that the bowl goes inside that should be changed also. Thanks to Beau for that info.
Most of the time; If it starts poorly but runs OK after start, the system has an air entry point.
If it starts poorly and runs poorly with smoke , you may have clogged filters and or air entering the system as it runs.
I changed all of my filters to spin on , one piece style to reduce air entry and increase serviceability Simply put the filters are easy to source .
The Racor style works very well of course but has many seals that all must function 100% for correct function. The parts are much harder to find in a timely fashion.
My original set up was in pretty poor condition and went with the new Racor filter/housing in order to avoid having to revisit the issue later.