Carb/Old Gas question

[rd1970gs]

Well I got a new member to the family over winter, a 74 laguna from canada. It is very pretty white with Burgundy strips.

The gentleman that I bought it from won it and never registered the car, so seeing how he had it 3 years I am guessing the fuel, which is down to a quarter tank is very old.

I have not run it much with the winter and salt, but ran ruff when I picked it up off of the car carrier. Then started running better when I moved it in Jan ran real smooth, but moved it this weekend end and it was smoking and idling way ruff. This car has points so look out as I am 35 yrs old no experience with them:pray:

So just due to the nature I am going to assume it is getting old gas/ dirt in the carb. So I am going to siphon the tank and dump some new gas in. Then run it on the old rochestor before I put my new holley 600 cfm on there. I am hoping that will do it?? While I am at it I will inspect and throw in plugs.

Any additives that I can add when replacing the gas to clean that out somewhat. Any thoughts in general on way the random running good then bad then good,

[roboteq-1@hotma]

Its not that hard to drop the whole tank, use some acetone and swril it around awhil, let it set swirl and dump-most of the crud will be on the bottom of the tank-just be careful with the sending unit, and treat her to some new fuel and vent lines!
Robert

[doc]

Rick, I think that if a man would just put some fresh fuel with some heet in it , that you would be alright.... i am concerned about the suggestion of putting acetone in there because acetone will definitly melt plastic parts.... and the screen on the pick up is plastic and there are plastic parts on the pick up unit.... just fresh fuel will fix it, i think.....

[online170]

I usually syphon as much of it out as possible. Nowadays you can get stuff from local stores like walmart or any parts place, that has a little pump and everything.

After that, get some gas line antifreeze (same as Methyl Hydrate) which you can buy in the paint section of any hardware store for the same price, but about 10 times as much stuff.

OR... the easiest thing to do would be to disconnect your fuel pump hoses, take a portable gas tank, and feed a hose from it, to your carb. Put the gas tank on the roof and let gravity do the work.

The pump will pump out every bit of old fuel, then you put in some fresh stuff and a way you go.

The last option is whats worked best for me, however, ive added new gas to old gas and that usually works too. Just get some premium and its usually good enough to flush the crappy stuff out.