What Is the Best Fuel Pump for Ethanol Gas?

Push rod hadn,t jammed in block?. Definitely wasn,t ignition issues? Fuel filter not blocked?. On my cars vapour lock didn,t occur when running but after I stop a while and the heat rises. Wont start then. Pump could be just .........ed. John

if you have a mech pump you have a vehicle that has got to be close to

check your oil, if it smells like fuel, change it

nate

This is a 1973 Beetle. I installed the fuel pump in March 2008.

I will check it today or tomorrow. I really think it is a worn push rod.

How many bakelight gaskets go on top of the fuel pump? Correct me if I am wrong. Fuel pump pressure should be 3.5 to 5 p.s.i.? TIA!

I don't know the answer to your last question, but is the FP rebuildable? or is it a sealed unit? If the former you may be able to buy a new diaphragm made from modern alcohol-resistant materials. "the cellar" is one source.

nate

John

I found a 1972 copy of "Without Guesswork" online, and it gives a maximum of 3-5 psi for that year's type 1 engines. So that's likely right for yours.

I looked up the specs for my 1973 Beetle with alternator.

The pushrod maximum stroke should be 5 mm. The fuel pump pressure should be 3 to 5 p.s.i.

I am going to try replacing the pushrod and setting the stroke to 5 mm. Then if that doesn't work, I am going to try an old fuel pump I have sitting on the shelf.

Then later on I plan to inspect or replace the pushrod once a year and replace the fuel pump every 3 to 5 years.

If the pushrod doesn't last, it's poor quality. I'd expect

Pump diaphrams might not last that long, and are not hard to replace. Some might not tolerate ethanol very well.

John

Yep. I do not recall ever having a pushrod wear out on a Beetle. The engine will need rebuilding first. You can usually adjust the height it throws with gaskets/shims anyway. KWW

Another common point of failure is the set of valves (controlling the direction of fuel flow - tank to carby) built in to the fuel pump upper body.

The upper fuel pump body is/was available as a separate part.

John

Today I ordered a replacement mechanical fuel pump from aircooled.net. They recommend packing it with universal grease. What is a good brand to get? TIA!