VAPOR LOCK
I'm experiencing what I believe is vapor lock in my 1990 E350 Class C. Happens when I climbing hills, especially when it's hot out. I can see the engine temp gauge rise and start looking for a wide p...
Forum Discussion
Since you found the filter below the driver did you replace it?
Take it off and try to blow through it. Those filters were supposed to last 100K miles per the manual but mine was blocked with 11K miles. The big issue was not mileage but years. Most folks don't put many miles on an rv and they can get plugged just like carbs due to fuel varnishing.
I chased the same problem for a couple of years before the in tank fuel pump finally really started acting up and I had to replace it. Found that fuel filter plugged so bad I couldn't blow through it.
Hot days, hard pulls, both would cause vapor lock symptoms.
Take it off and try to blow through it. Those filters were supposed to last 100K miles per the manual but mine was blocked with 11K miles. The big issue was not mileage but years. Most folks don't put many miles on an rv and they can get plugged just like carbs due to fuel varnishing.
I chased the same problem for a couple of years before the in tank fuel pump finally really started acting up and I had to replace it. Found that fuel filter plugged so bad I couldn't blow through it.
Hot days, hard pulls, both would cause vapor lock symptoms.
