Fuel pump went out.

94 SL320

Replaced it - leaking. Put two silver washers which came with the new fuel pump. Still leaking.

Put two brass washers still leaking

Put two washers used for battery terminals half encased with rubber.

Six months later leaking again.

Tightening leaking spot - the fuel pump tears open.


New fuel pump.

Mechanic suggests two rubber O-rings.

When tightened they begin to bow out. (See photo)

I know this will leak as there is a clear way for it to escape via the bowed out ring.

Leaving bolt loose so they dont bow leaves me to believe vibration will easily loosen the bolt to falling off.

Gallery of photos of fuel line Im speaking of. Fuel pump closest is culprit. O' rings are the black lines.


ImageShack Album - 8 images


What washers should be used on a metal on metal fuel line?

 

Teflon;available at any parts house.Will not crush when tightened.