H3 - Water in Fuel Tank

[Viet Nam Vette]

I'm sitt-en here thinking..and ..The I-5 is a Fuel Injeted motor with a high pressure feed line from the tank to the fuel rail at the motor. I would assume that there is a bypass return line back to the tank for unused fuel at the fuel rail.

Wouldn't there be some kind of a pressure relief on the retun side ..in other words ..why would they vent the tank.? It's supposed to be sealed when you replace the gas cap ..other wise you get a Check engine light if there is no pressure in the system.

BWTFDIK..... ..............Take it F5..

[evldave]

I'd think that you'd be better off leaving the engine running (and fuel system pressurized) as long as you are not drawing water into the air intake. Pressure of water (~14psi) going IN is gonna be less than fuel pressure (40-50psi?) going OUT...

[Wisha Haddan H3]

Might have ruined your catalytic converter too. Definitely check the diffs for water

Okay, I've been warned about using my H3 as a submarine.

[Mr_Pat]

But I saw the comercial that says the H3 is a sub?????

Brochure is clear about the water depth.

[algy]

Originally Posted by Steve - SanJose

Brochure is clear about the water depth.

Can't help but say that Brochures are for soccer moms.

[algy]

Originally Posted by Wisha Haddan H3

Might have ruined your catalytic converter too. Definitely check the diffs for water

That was my 1st thought. Because I had staled out, I thought for sure I sucked up water and into the catalytic converter and ceased it. Using the trusty "tap w/ a wrench test" I found no sign of water in the pipes or muffler once the amphibious extraction was complete. Also during the land extraction I was being pulled up some steep inclines and again, no water was coming out of the exhaust during those climbs.

The diffs check is excellent, totally slipped my mind and you?re not the 1st to say it.

[f5fstop]

Originally Posted by evldave

I'd think that you'd be better off leaving the engine running (and fuel system pressurized) as long as you are not drawing water into the air intake. Pressure of water (~14psi) going IN is gonna be less than fuel pressure (40-50psi?) going OUT...

I will agree, if you KEEP IT RUNNING. However, once turned off, then make sure there is no water that will get into the system and start ruining parts.

[deserth3]

The vapor lock vent has to work both ways. THe returning fuel from the engine fuel rail will be warmer. Increasing pressure. Without the vent you would pull a vacuum when the fuel cooled off colapsing the tank.
Same thing with alltitude.

When it sat in the water the fuel would have cooled pulling a vacuum on the tank sucking in water.

Same thing happens with your rear diff. I recommend and oil change. Easy to do. Pull off the fill plug with a 3/8 wratchet. There's a drain plug underneath to drain the fluid. Again a 3/8 wratchet. Replace drain plug. fill up to fill plug.
Mine toook just over 2 quarts to fill the diff. I used Mobil 1 synthetic 75W90