I have a friend here who just took possestion of a 320/6 that has been sitting for several years. It will run if you spray starter fluid in the carb, but no fuel is flowing through the pump, which on a carb motor is mechanical best we can tell. We were unable to figure out if it had an electric fuel pump somewhere since it still has a fuel pump fuse, and a fuel pump relay which I would think would be unneeded if the pump is mecahnical...when we pulled the fuel pump fuse and put it back in solenoids all over the carb seem to click. We checked the fuel filter on the carb and it was fine as well. It didn't have any gas in the tank, so we added 2 gallons, and pulled the sender to peek in the tank just to see what was going on, everything looked good there as well.

This car also has a funky feature in that it appears to have been able to run off off of propane or some type of gas. There are connection hoses in the trunk along with a frame that looks to hold a propane tank. it's all been disconected and plugged, so I don't think that is the issue.

Anyone here with expierence starting a long disused 320/6?

Long sitting carbs tend to gum up tiny passages like the idle jets and progression holes. You might, might be able to fix it without taking the carb off for a real cleaning by putting fuel injector cleaner in the carb float bowl and letting it soak for a while. Not very likely, though. Sounds like there is some weird stuff on there, too. I am not a 320/6 expert by any means - hopefully that rings a bell for someone else.

well the carb isn't the problem yet, we pulled off the fuel line going into the carb and no fuel is making it to the carb. and we can't figure out why...

Oh, guess I misread.

Well, if the mechanical fuel pump isn't pumping, that is likely a culprit.

filter?

The flot has rotted and its all plugged up. Rebuild and clean it first. Then it should be able to run without the pump if the bowl is full of gas.

Flot? what is that? My friend has my 323/320/6 haynes workshop manual so I can't look it up atm.

Most carbs have either a plastic or metal float. Srr i misspelled it. (perdone, English is just becoming my first language). Literally it floats in fuel and regulates the amount of flow into the bowl thru a niddle. They become heavier and sometimes disolve a bit so some crap accumulates in the jets, etc. Its usually from gas going bad and dry rot.

did you mean to say "needle"?

I would rather say nipple, but wth.

My friend is thinking it's the fuel pump seals. the fuel system isn't getting any pressure, so the float issue isn't there since no fuel isn't even getting to the carb at this point.

He's thinking about just towing it to the shop he works at and he's planning on tossing in a E-30 2.5L M20 with EFI in there instead of the 2.0L M20

Hook up an electric pump from an E21. The one in the tank. It runs at 3.5 psi, just what it needs.


Usually when a mech pump goes bad, it starts to leak from the damaged seal inside.

Hook up an electric pump from an E21. The one in the tank. It runs at 3.5 psi, just what it needs.


Usually when a mech pump goes bad, it starts to leak from the damaged seal inside.
Is that 3.5 psig or psia?

put it in the tank? I guess the sender would have to go then since the 320/6 only has one fuel tank hatch....