How to prevent generator vapor lock
I have a Onan Gold 7000 generator. Runs fine normally, but sometimes when traveling in hot weather it develops vapor lock. When it happens, it has been when temperatures outside are above 97/98. We...
Forum Discussion
cgmartine wrote:
Did the original poster resolve this issue? I have been keeping a close eye on this issue and it appears that this issue is more prevalent that one would imagine. Possibly all heat related. One suggestion I have heard is to move the fuel pump out and away from the generator enclosure. Do we have an update on this?
I am the original poster. I have not found a solution to this problem. I purchased a roll of 'cool tape' at the auto parts store. I wrapped the fuel line all the way from the tank to the fuel filter and then from the fuel filter to the carburetor. This summer coming across Texas, it was even hotter than it was on the previous trip. This time the generator stayed running better to approx. 110 outside, whereas before it was stopping at around 100 degrees. But I am not sure if the cool tape helped, or it was other variable factors.
Someone had mentioned that using no ethanol blend fuel would help. We did try to find no ethanol fuel on our summer trip, but it is not practical to find no ethanol blend fuel on a trip. So, in summary, we have not found a solution. In our case, we were thankful that our DASH A/C still works well. It's a shame really that when you need your generator the most for a/c, in hot weather, the gas generator has problems. It is either overheating, or vapor lock, not sure which.
