Since the recent cold weather I have noticed a diesel leak coming from the area of the fuel pump. Once the engine is warm the dripping stops. Can't see exactly where the drips come from but it's not from any of the pipes. Any ideas? - (#1632) Jeff Willcott, 15 Dec 01

Accelerator spindle seal, shaft seal, or top cover gasket. - (#1634) david miller, 15 Dec 01

Thanks David, having a closer look, I have found drips from what appears to be a very strong coiled spring half way down the pump body, on the passenger door side. Would this be one of the areas you described? - (#1729) Jeff Willcott, 29 Dec 01

- (#1730) Jeff Willcott, 29 Dec 01

Ah, that's the fast idle device, and no doubt there's a seal where it goes into the body. Must look up the cd... Any chance the leak is from further up the body, though? - (#1764) David Miller, 2 Jan 02

The area above the coiled spring seems perfectly dry, can't see any other possibility. Will take a really close look in daylight. Thanks David. - (#1774) Jeff Willcott, 2 Jan 02

The assembly is sealed by an "O"ring where it presses into the pump, IIRC, which is replaceable, but the thermo wax assy as they call it is one piece, so no spindle seal for it, only replacement. - (#1778) David Miller, 3 Jan 02

My understanding from exploring this area (see Fuel Leak posting Dec 3) is that the Idle-Up and ThermoWax both operate by pushing the lever to which the "throttle" cable is attached - in other words they shift the idling stop. You can take the whole thing off the side of the pump without any fuel escaping, nothing passes inside the pump.
So I can't imagine a fuel leak from the Idle-Up. The ThermoWax (which has the big spring) is just another "Idle-Up" feature driven by low coolant temperature (isn't it?) so it could leak water but not fuel.
My leak, from around the ("throttle") operating lever spindle, did NOT appear to dry up when the engine was warm but maybe it depends how fast the leak is.
This is not much of an answer but might provide some more clues. - (#1785) Dave Mason, 3 Jan 02

Not the case, Dave- there's a ballstud on the back of the idleup shaft that alters the injection timing at low temps - (#1794) david miller, 3 Jan 02