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240 FI pressure test 200 1986

posted by  sideswipe on  Fri Apr 1 00:36 CST 2011
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last visit: Fri Oct 11 00:21 CST 2013
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Update to 240 No Start. I'm still fighting a no-start, that (per Art B) is likely a corroded wire issue. But, I can say that one of the fittings between the fuel filter and main pump will fit the fuel rail on a 1986 240 and not leak. Using this spare fitting (and plugging the FPR outlet), I pressurized the fuel rail with a bike pump and gauge to confirm that the injectors were not firing during cranking (no pressure drop). (I'd seen wet plugs, so I was thinking flooding - not so.) I saw no drop in pressure despite the fact that ( a borrowed) an oscilloscope showed that the ECU was grounding the FI and 12V was present.

Currently, I'm fixing the wiring and hope this will let the car start. Thanks to the poster with the oscilloscope plots.






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New 240 FI pressure test [200][1986]
posted by  sideswipe  on Fri Apr 1 00:36 CST 2011 >


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