I have not connected my tester to confirm that the fuel pressure bleeds off.

Do I simply disconnect the cold start valve at the fuel distributor and put my tester in line? Then do I run the engine to normal operating temperature, turn it off, and watch to see if the pressure drops?

For many minutes should the system pressure not drop off? What is an acceptable pressure level?

Thank you..

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Jim Herold--Current: 1987 190E 16V, 1999 ML 430--Past: 1971 280 SL, 1972 250