speedboatsteve
Member
Hope you guys can help?
My vapor separator is the type with the external HP pump that is bolted underneath. The pump gave up a couple of weeks ago and the marina have told me you have to buy a whole new vapor separator now as you cant just buy the pump. As the whole unit is a bit pricy I thought I would see if there is an alternative HP pump out there that would work.
After a bit of searching I came across a WALBRO GSL392 which dimension wise it was pretty much the same as the broken one and from what I could gather, PSI looked as though it should be fine too so I decided to give it a try.
Flow Ltr/Hr @ 3 Bar (44psi):- 270Flow Ltr/Hr @ 5 Bar (73psi):- 222
I had to extend the fuel pipe on the low pressure side of the pump but otherwise it was a pretty good fit.
When it came to starting all looked and sounded good, primed the bulb until hard, turned the key, heard the pump run for 2 seconds then fired up the engine. it runs great, the trouble is, it only runs smooth for about 20 seconds, it then starts to run very lumpy.
It's probably worth mentioning that I've had the vapor separator off and on my bench to fit the new pump but I haven't replaced the filter on the HP side but it was running fine until the pump died.
I'm sure some of you will be reading this thinking just buy the new part and have done with it! The thing is, as I said, it is quite expensive and every year at the start of the season, something major seems to need doing so maybe my money would be better saved and put towards a new one. It would be nice to get another year out of this one though, or at least finish the season.
has anyone else successfully replaced the HP pump with an aftermarket one? Or does the one I fitted look like it should work and I've developed a new problem?
Any help would be greatly appreciated.
My vapor separator is the type with the external HP pump that is bolted underneath. The pump gave up a couple of weeks ago and the marina have told me you have to buy a whole new vapor separator now as you cant just buy the pump. As the whole unit is a bit pricy I thought I would see if there is an alternative HP pump out there that would work.
After a bit of searching I came across a WALBRO GSL392 which dimension wise it was pretty much the same as the broken one and from what I could gather, PSI looked as though it should be fine too so I decided to give it a try.
Flow Ltr/Hr @ 3 Bar (44psi):- 270Flow Ltr/Hr @ 5 Bar (73psi):- 222
I had to extend the fuel pipe on the low pressure side of the pump but otherwise it was a pretty good fit.
When it came to starting all looked and sounded good, primed the bulb until hard, turned the key, heard the pump run for 2 seconds then fired up the engine. it runs great, the trouble is, it only runs smooth for about 20 seconds, it then starts to run very lumpy.
It's probably worth mentioning that I've had the vapor separator off and on my bench to fit the new pump but I haven't replaced the filter on the HP side but it was running fine until the pump died.
I'm sure some of you will be reading this thinking just buy the new part and have done with it! The thing is, as I said, it is quite expensive and every year at the start of the season, something major seems to need doing so maybe my money would be better saved and put towards a new one. It would be nice to get another year out of this one though, or at least finish the season.
has anyone else successfully replaced the HP pump with an aftermarket one? Or does the one I fitted look like it should work and I've developed a new problem?
Any help would be greatly appreciated.