1997 502 MPI Issues - Vapor Lock?
#75
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So I'm gonna need to plug the return line opening in VST tank?
Can envy one explain please what will all that do? I mean putting the return line from VST to the gas tank.
I'm looking at that picture and can't figure out in what way will it improve it.
Can envy one explain please what will all that do? I mean putting the return line from VST to the gas tank.
I'm looking at that picture and can't figure out in what way will it improve it.
#76
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Rather than sending the unused fuel in a continuous circulation loop around an 8.2L heater you'll send it back to the tank. It keeps cooler fuel going into the vst rather than recirculating some superheated stuff.
yes, youll need a 5/8-18 inverse flare plug for the vst tank.
yes, youll need a 5/8-18 inverse flare plug for the vst tank.
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Ok. Now I understand. Thank you
What I was also thinking was replacing the spring in the VST for the weaker one. If it presses with less strength the vapor pressure won't have to be as big as with the original spring to open the vent valve. It will allow vapors to escape more easily.
What do you guys think?
What I was also thinking was replacing the spring in the VST for the weaker one. If it presses with less strength the vapor pressure won't have to be as big as with the original spring to open the vent valve. It will allow vapors to escape more easily.
What do you guys think?
#78
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Ok. Now I understand. Thank you
What I was also thinking was replacing the spring in the VST for the weaker one. If it presses with less strength the vapor pressure won't have to be as big as with the original spring to open the vent valve. It will allow vapors to escape more easily.
What do you guys think?
What I was also thinking was replacing the spring in the VST for the weaker one. If it presses with less strength the vapor pressure won't have to be as big as with the original spring to open the vent valve. It will allow vapors to escape more easily.
What do you guys think?
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Ok I'm little confused. There are 2 vent hoses. I'm guessing you are talking about the one that is not on top of the VST cover but one on the side. Right?
How can vacuum open that diaphram if it's being pushed by the spring from below. If suction is applied it will only close (suck in) that vent even stronger.
That makes me think that the spring should be on top of diaphram in my VST and when I start the engine it will be sucked in and close the vent. Once the vapor pressure is high enough (during engine running) it will push the membrane down opening a vent.
Please correct me if I'm wrong.
When I took VST apart the diaphram and a canal leading to that clear hose on top was completely clogged.
I'm trying to figure out one thing at a time. I boat every Sunday so it's the time of testing everything I implicated over the week.
How can vacuum open that diaphram if it's being pushed by the spring from below. If suction is applied it will only close (suck in) that vent even stronger.
That makes me think that the spring should be on top of diaphram in my VST and when I start the engine it will be sucked in and close the vent. Once the vapor pressure is high enough (during engine running) it will push the membrane down opening a vent.
Please correct me if I'm wrong.
When I took VST apart the diaphram and a canal leading to that clear hose on top was completely clogged.
I'm trying to figure out one thing at a time. I boat every Sunday so it's the time of testing everything I implicated over the week.
Last edited by Capt.Yar; 03-14-2014 at 02:16 PM.
#80
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