Anyway to repair, rather than replace, the shut off valve?
 

My car is dieseling, (won't shut off for 6 seconds or so after the key is off) so I wonder if there's anyway to repair the shut off valve than spending $35 on a new one.

Thanks,

Jeff 1991 300d, 114k

Nope.

Try checking for vac leaks, as the shutoff valve is vac controlled. If you push the stop lever by the valve cover, does it still take so long?

-Joey

That's probably one of the cheaper parts you are going to buy.

the little diaphram inside gets a tear in it and causes the vacuum to leak. The valves i believe are crimped together. So if you know some way of undoing the crimp and not effing the whole thing up in the process you are still faced with finding a diaphram or similar material.

Put a vacuum line to the shut off valve and give a couple of strong sucks on it before condemning the valve. It could be a vacuum leak elsewhere.
A really frugal person might figure out how to disassemble the valve and repair the tear with Goop or something.

..........PEH..........:D

:D:D
First thing that popped into my head also.....

He'd use goop on a cracked cylinder head..........:D

You could just buy a nice mity vac and run a length of vacuum tubing into the passenger compartment. Pump it a few times and you're golden. Plus you get to buy another tool, one that will help you track down your other vacuum leaks from re-using old vacuum fittings.:D

The gold will quickly turn to stone if the diaphragm is ruptured.............

If the guy is frugal enough to want to repair the diaphragm, he aint going to want to buy a Mity Vac. He needs to use his god-given Mity Vac found in his cheek muscles. If he gets desperate he should be able to insert a small vacuum guage in one side of his mouth while sucking on the vacuum line in the other.

.........does the gauge come with a 90 degree swiveled fitting so that he can read it during this evacuation procedure?

.........and, does the gauge have a "head mount" so that it won't fall out??

Can a normal human bean generate enough suction to close the fuel shutoff valve?

Easily.