One piece gas line

D

drbarbara

Member
Following everyones advice I was trying to change my gas line to a steel line. The problem I ran into probably has a very simple solution but I just can't find it. The size of the fitting on the Holley carburator is a 1/4" and the one on the pump is 5/16". I got a pice of 1/4 line and a piece of 5/16' line but could not find a reducing fitting to join both of them so for the time being I was forced to join them using a small piece of marine grade fuel rubber line though this I think defeats the purpose of the steel line. I looked for the connection in marine store, auto part store and hardware store. Any ideas.

Here is a small clip where you can see the line with the rubber hose.

http://www.docathome.us/BoatPictures/MVI_1876.AVI

Any ideas?

Thanks
 
How about using 1/4" line and bushing it down at the pump. You've gotta be able to find a 5/16" male X 1/4" female bushing and adapt to the flare fitting from there (I think).

Good luck with it.
 
How bad is this

How bad is it to leave it like this until I can sort this out. I mean is the risk big or small. I understand that you want a steel line because you do not want it to rupture. If the hose is new can I assume that it will be ok at least for a couple of weeks?
 
I change all to rubber, just leve a short piece to the carb to double clamp the rubber, and end al the problems!!
 
All Rubber

I would love to use just rubber line. The local Volvo dealer said that it was not "legal". I do not understand what that means. Can the Coast Guard fine you if the line is not steel.

Does the risk of fuel leak increase dramatically?
Is the steel line story just paranoia?
 
they will actually approve up to 18" of flex line if the fittings are approved(flare type). You should be able to find an inverted flare adaptoer at a good auto parts store, But I wouldn't screw with it till you replace that carb with a marine one, You're probably going to have to remake the line anyway. you should be ok for while with double clamped marine grade A1 line
 
Not owning an I/O

Shouldn't it be rubber (approved) hose from the tank to the fuel pump, then hard pipe to the carb with a fuel filter inbetween, connected with short rubber hoses?
Or am I missing something??
The line where the rubber hose is should carry a fuel filter, some have different size inlet and exit nipples.
Having a water seperator between the tank and fuel pump should be installed also.
Ya'll help correct me............................
 
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Filter

there is a fuel/water separator between the tank and the pump connected with rubber tubing. The line from the pump to the carb is the one that I think should be one piece. Someone in a previous thread suggested to loose the inline filter
 
Again somebody correct me.
But ain't that the way it was originally installed and intended??
Most outboards have an additional filter next to the powerhead, for what reason, I don't know.
Looks easier to just have an in-line fitler in this instance. Maybe not the type you removed.
I think spareparts was referring to the glass type, other than breakage possibility, it is subject to unscrew or the o-rings to leak.
A regular metal one may be acceptable.
 
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I see you have an actual marine carb now, that one ought to work nicely. I personally would be looking for stainless line, if you can't find it then use coast guard approved marine grade rubber line. It may not be completely legal, but it works just fine on outboards. Just find some hose barb fittings that fit into your pump and then your carb, and run at least a 5/16" line. HOLLEYS are notorious for starving for fuel under load. 1/4" will not feed that carb under a hard load and could cause you to lean out and burn a piston. Use brass fittings with an extra long barb on them and double clamp with marine grade hose(DON'T USE AUTO HOSE!, you'll be begging for a problem). And the filter after the pump is for in case you have a pump failure or a piece of the diaphram comes loose it won't cause the needle and seat to stick open and allow raw fuel to spill out.
 
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