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Old 05-16-2002, 04:41 PM
Ron Johnstone Ron Johnstone is offline
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Join Date: Jan 2001
Location: Santa Clara, CA
Posts: 411
300TE Fuel Pressure Regulator question. Help!

Sorry to ask dumb questions, but my CD Rom has seemingly outdated information and non exact part diagrams of the Fuel Pressure Reg.
I have p/n 0 438 161 001, in my '88 300TE. Blowing into the center orfice with my mouth, I get no flow. Blowing or sucking on the opposite, vacuum end , there is also no flow. But, blowing into either of the side orfices, there is a definite, slight air flow.

The diagram, such as it is, seemingly shows that there should be no flow.

Would, or can anyone confirm this?

Assuming that I have a leak between chambers, this would account for the fact that the car won't start for lack of gasoline to the cylinders and that I should replace the regulator. Actually, I'v already replaced everything else between it and the gas tank.
'76 240D-Sold
'78 240D-Sold
'85 300 SD, 165K-Sold
'88 300 TE, 165K-Sold
'64 Porsche 356C Cabriolet
'86 560SL 124K Miles
'94 320E Wagon, 74K Miles
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