fuel tank vent hose

Wayne,
Have you ever overfilled the tank? If so, gas comes out the vent. Check for a small screened thru hull on the transom.

wayner wrote: Thanks. I was not sure if the over flow and the tank vent were one in the same and I wanted to make sure I was checking everything. I like to be safe so appreciate the input.

Wayne,
Don't ever say "overflow" if anyone from the DNR or EPA is around. They don't like gas in waterbodies and, you can actually get fined for it! That fitting is the VENT.

A quick way to check if the vent is plugged is to loosen the fill cap which will temporarily allow air into the tank. Have you checked the anti-siphon at the top of the tank where the fuel line to the engine is attached?

Getting back to spilling gas in the lake, have you ever seen one of these? Very handy if any authority is watching you fuel your boat!

Looks original but I did pull the back panel off that allows access to the tank and hoses. Hose seems to be fine and is easy to move so not pinched. I have decided to go through and change plugs, points, condensor, dist cap and spark plugs. Wires are 8mm Beldons so should be good. I put new in-line fuel filter in. Only thing I am not sure of is if the Holly carburater has a filer of its own. I also dont know much about adjusting the floats when a carburater sits at an angle. I guess I will search for direction. Seems to starve for gas after 3000 rpms so I am going through process of elimination.   I know lots of opinions on electronic ignition as well but I almost wish I would have just gone that route to eliminate adjustments.

Agree. Check/replace the anti siphon valve.

I bought mine at west marine and probably paid twice it's worth, but I was in a hurry to be back on the water and $20 was acceptable to be skiing by Friday.

I expect they are available from Amazon or your favorite on line retailer. The one that I bought was aluminum and the old one was brass. The aluminum is bugging me, so I will likely be replacing it with a brass one this winter.

They come in two sizes for the threaded connection to the tank at west marine. Make sure you buy the correct one for your tank and your hose.

The connection of the old one to the tank was really tight, I had to put some serious hand pressure onto it to break it loose. Definitely use two wrenches, one on the 90 degree fitting on the tank and the other (obviously) on the antisiphone valve. You do not want to damage the welded connection to the tank by putting sideways pressure on it.

Andrew