draining gas tank on 85 bayliner

[Old85]

I am trying to drain the gas tank, Ive got a hose on the barb routed out the drain plug hole. I put one of those hand pumps on it, the kind you change the engine oil with.

I got about a gallon out of there...it never flowed really well...I thought it would act like a siphon, once I got it going just pull the hose off and let it fill the can on the ground but it just petered out.

It seemed to develop a vacuum also, especially towards the end, I pumped and pumped, and it held a huge vacuum on the drain hose but no gas. (The tank is vented so why the vacuum?!?)


I have never used the main tank except once after putting 5 gallons in it and it ran badly. I think it has at least 4 gallons left in there.

How do I get it out?
I wonder if the pickup is clogged hard with some goo!

Thanks for any ideas!

Ron

 

[Old85]

Re: draining gas tank on 85 bayliner

CLOGGED.

It occurred to me right after I posted the above message...

I tried to blow back into the tank, and couldnt do it. Its clogged. Now have to see if I can access the pickup at all.

Fun fun fun!!!

 

[Fishermark]

Re: draining gas tank on 85 bayliner

There is an anti-siphon valve on the tank - it keeps the gas from siphoning out in case of a fuel line rupture. Sounds like it is working!

Having said that, you should certainly be able to pump the gas out. It could very well be clogged. Your vent line may also be clogged - try removing the fill cap and try it again.

 

[zbnutcase]

Re: draining gas tank on 85 bayliner

You may, if you have access, remove the gauge sender and have a look inside...

 

[mike343]

Re: draining gas tank on 85 bayliner

Get some 3/8 hose and a in-line fuel pump (like on outboards) and siphon it out.