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September 29th, 2008

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Q & A: Run-on Valves

Friday March 29th, 2002
Q & A, MGA, MGB, MGC, MG T-Type, Midget
Good Afternoon John

I have a1979/80 MGB LE. Recently my car would keep running on after I
shut
the engine off. I decided to order a new Anti-Run-on valve from Moss
after
testing the one I have by grounding the slate/yellow wire connected to the
oil pressue sending unit. I know the wires are good because I tested
them.
However, when I grounded my old run-on valve and the TWO new one I
oredered
from Moss, I did not hear the valve operate as apparently I should. Is
there a reason I would not hear the valve operate for my year car, or is
it
really possible that the TWO new valves that I ordered from Moss could be
bad? Thanks for your input.

Most Cordially,

Robert L.F. Clarke
Immigration Paralegal

Rose Rix & Bennett LLP

Robert!

Let me explain how the system works -- then you can re-check your
system. The anti run-on valve is designed to place a vacuum on top of the
gasoline in the float bowl at the instant the car is turned o... read more