anti-siphon valve issue

[lakewind69]

Hope everyone is working on getting their boats off the hard. Finally getting some nice weather in the Keweenaw; hope to be in by the end of the month.

I have a 1969 30' Sea Raider with twin 210hp Interceptor engines. Last year during the last two trips of the season the port engine started running rough and would stall after about an hour of running. Fuel was new and no indication of water in the tank. Fuel/water separators were new that season. Put the boat in storage for the winter with plans on replacing the anti-siphon valve this spring. My problem is I can't seem to locate the valve. Checked from the tank to the pump and couldn't find one. Am I blind or was this valve a Trojan option in 1969. If it's not the valve, what else could be causing the problem? Starboard engine runs fine...same fuel but different tank.

Thanks for your assistance!
Brian

[ready123]

is there a 90 degree angled fitting at the top of tank where fuel takeoff is?
http://www.trojanboats.net/wforum/viewt ... phon+valve

[lakewind69]

Yes, there is...then the shut-off valve. I thought that may be the valve. Can't remove it without first removing the fuel sending unit. That was going to be my next task. Purchased an in-line valve to replace the old one and that style was what I was looking for.

[lakewind69]

Afternoon Michael,
Are you saying the anti-siphon valve is in that 90 degree fitting? I thought that was the fitting for the pickup tube.

[The Dog House]

Afternoon Michael,
Are you saying the anti-siphon valve is in that 90 degree fitting? I thought that was the fitting for the pickup tube.

The anti-siphon valve is in the 90 degree fitting.