Update: I've put a 3/8 bulb on there and the fuel level does not drop in the clear filter. So, as far as I can tell, it is ready to take to the lake to see if it actually works, as I can no longer re-create the problem in my driveway with the 3/8 bulb installed.
I find it strange that the diameter apparently made that much of a difference. Unless I had two defective bulbs in a row, that both worked correctly when you blow through them, then I think the jump from 1/4in to 3/8in was needed. I feel like a dunce for installing 3/8in line, and a 1/4in bulb but at least that is corrected now.
I will report back after I make it to the lake.. Hopefully this weekend, just waiting for the Seattle rain to stop..... haha
NEVER, EVER EVER EVER pressurize a fuel tank!!!IEVER!!!
The act can cause static electricity and the fuel can go BOOM!!!
I haven't, I didn't have the tools or feel comfortable doing it. I also read that it can "pop" your tank if you're not careful.
I run BOTH of my 85's on the same 1/4in feed.
The feed line is 11ft long.
Both go through a water sep filter and both have inline small particle filters between the pump and the carb.
I ran a 225 EFI on 1/4in hose with no trouble.
That's strange.. According to the shop I went to (two shops now actually), they both say that around 80hp is where you typically see a switch from 1/4in line to something bigger. I'm wondering if maybe it has something to do with the difference in those motors' efficiency, vs my motor's efficiency - or maybe EFI vs carbureted. If my understanding of the fuel systems is correct, running EFI would be much easier to get away with small hose since you have pressure to push through. My motor is carbureted, so it would have less power to move fuel through a line, thus needing the larger diameter.
Now IF??? the hose is old or weak it would/could be trouble. But yours is new.
Vent line?
Vent line is new. Old one wasn't plugged either.
The clear filter DOESN'T have to be full for it to function.
Sometimes air gets in there and it stays.
But there does still need to be at least as much fuel flowing in, as flowing out, no? The problem I was having was the fuel level was decreasing, and eventually it would be empty, save for a trickle of fuel going through. In other words there was more going out than coming in. It never was completely full though, only about 3/4 at most.
What's the compression on the motor.
You said it was good but the #3 cyl operates the pump.
They all should be about the same.
Is the gasket behind the pump there?
What condition?
I don't have the compression numbers. I took it to a mechanic and they said that all cylinders had good compression (they were working on / checking other things as well). I would assume that means that the cylinders' numbers are close to the same, though I guess it would depend on your definition of close.
The fuel pump gasket is there, it is in good condition. It was just replaced a few months ago and has had almost no use since then.