When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I just bought an unmaintained 1974 coupe. It has a Holly double-pumper carb. The car will putt around the neighberhood just fine but on the highway above 30 mph will only go a few hundred feet and die..seems like it runs out of fuel. Float level is OK..
It has a fuel pressure gauge that flutters around 10-15 psi.
Gauge reads 10-15 lbs? Way too high. Let's hope that's a false reading. 5-7 is plenty.
You may want to find a gallon / bucket of Barryman's Carb Cleaner. That Ethanol gas can really screw up the works in any carb. A good soaking with gaskets removed and do one part or section at a time.
Because it appears to be starving for gas during high demand, I would suspect: Needle valve, seat, float condition, "O" ring on the needle valve even if the fuel level is at the sight glass hole. Last week, I had a brass float hanging up on the hinge mounting tab.
This issue could also be a well-worn fuel sock in the gas tank too.
There have been a few individuals that say: "I'm not paying $15 + shpg for a preformed chunk of hose". And off they go AutoZone to buy a foot of gas line a lot cheaper.
Moments later: I can't get the car to run longer than the life of a housefly.
There have been a few individuals that say: "I'm not paying $15 + shpg for a preformed chunk of hose". And off they go AutoZone to buy a foot of gas line a lot cheaper.
Moments later: I can't get the car to run longer than the life of a housefly.
if you rout the length of fuel hose correctly it will not kink, also the quality of the pre bent fuel hoses are not very good and seem to fall apart in my experience
There is an transparent inline filter right before the pressure gauge at the carburetor and you can see fuel in it...
I would recommend changing the in-line filter too, especially if you think it could be old gas, bad gas (ethanol), sediment, etc? Only takes a few minutes, easy to do, doesn't cost very much, and it eliminates one possible variable.
If you're not sure about the freshness / age / or type (ethanol?) of the gas in the tank, it's a pretty easy fix to buy a gas syphon hand-pump for about $18 at your local auto parts store and syphon the old gas out of the tank and replace it with fresh non-ethanol gas.
if you rout the length of fuel hose correctly it will not kink, also the quality of the pre bent fuel hoses are not very good and seem to fall apart in my experience
If you say so.
Myself, I bought the "S" fuel line 13 yrs ago. No issues.
Today I drained the fuel tank and tried to remove the tank sock. It pretty much crumbled when I touched it. Siphoned out the residue and installed an inline filter at tank outlet. Maybe good, maybe bad????
Fuel Problem?
