2001 Seapro 255 WA twin 150 HPDI fue problem

[riptidefl1]

I am having a fuel issue on one engine. I have isolated this back to between the tank and the first section of hose.  When attaching a working primer bulb to this section of hose I am not able to draw any fuel. If I try to blow air into the tank no air passes (so no leaks in this hose).  So I suspect my issue is the pickup or check valve screwed into the top of the tank.  This valve, barely visible when you pop the deck plate, is not accessible.  Before I start cutting into the deck wanted to see if anyone has any experience with this type of problem and how to fix.

[freezerfiller]

very well could be the check valve. I'd certainly try a new short piece of hose with a NEW primer bulb before I started cutting anything. I'd also verify the fuel vent is working, and then shoot a little compressed air back from the fuel hose to the tank to potentially clear any debris from the pickup screen. Edit: this won't work if you have a functioning anti-siphon valve installed.

[seagristle]

You say "on one engine" . Never had a 2 engine boat, does it have a separate pickup tube for each engine? I have had a check valve go bad on my 2002. Broke off trying to get it out. redid the whole pickup tube & fitting but Did not replace with another check valve.

[riptidefl1]

the problem is with one engine. there are two separate pickups, one for each engine.  I assume there is only one vent for the tank? I am down to a 4' length of hose attached to the tank with a new primer ball and I cannot draw any gas.  When I try to blow air back into the tank it will not flow.  Is the check valve part of the pickup assembly attached to the tank? 

[freezerfiller]

Mine was in the elbow that screws into the pickup. images.search.yahoo.com/images/view;_ylt=AwrB8pUuKfdTqxgA1oeJzbkF;_ylu=X3oDMTI0a2x2MWRjBHNlYwNzcgRzbGsDaW1nBG9pZANmZmFkOWY1MjIyM2VmNzMwMWZhN2Q3OGQ1M2EyNzdjOARncG9zAzIwMARpdANiaW5n?back=https%3A%2F%2Fimages.search.yahoo.com%2Fsearch%2Fimages%3Fp%3Danti-siphon%2Bvalve%26fr%3Dyfp-t-442%26fr2%3Dpiv-web%26spos%3D36%26nost%3D1%26tab%3Dorganic%26ri%3D200&w=750&h=750&imgurl=www.imcomarine.com%2Fcal_store%2Fmedia%2Fcatalog%2Fproduct%2Fcache%2F1%2Fimage%2F9df78eab33525d08d6e5fb8d27136e95%2Fa%2Fn%2Fanti-syp-07-2003.jpg&rurl=http%3A%2F%2Fimcomarine.com%2Fcal_store%2Fanti-siphon-valve-1-2-90-degree.html&size=79.5KB&name=%3Cb%3EAnti-Siphon+Valve%3C%2Fb%3E+1%2F2%26quot%3B+90+Degree&p=anti-siphon+valve&oid=ffad9f52223ef7301fa7d78d53a277c8&fr2=piv-web&fr=yfp-t-442&tt=%3Cb%3EAnti-Siphon+Valve%3C%2Fb%3E+1%2F2%26quot%3B+90+Degree&b=181&ni=21&no=200&ts=&tab=organic&sigr=124e2t867&sigb=13sr4022q&sigi=13qia06sr&sigt=11c4hq0rd&sign=11c4hq0rd&.crumb=lzzyC6YhPfX&fr=yfp-t-442&fr2=piv-web

Mine looked like the pic above, but I've seen others that are straight. Do a search for anti-siphon valve.

Edit: I gave you some bad advice 2 posts up. If your anti-siphon valve is working and in place, it would prevent you from blowing air back into your tank.

[riptidefl1]

thanks...that's exactly what mine looks like and has to be the problem...I wish seapro would have made the access big enough to remove & replace...will have to cut a larger access.

[riptidefl1]

it turned out to be the anti siphon valve.

[gnrphil]

Glad you got that sorted, thanks for following up with a good result.