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FI and turbo questions,crank sensor /hall effect /fuel leaks causing no start?HELP!!!!!! 700 1987

OK kids this is another plee for clues on my 3 day no-start siuation...
car:1987 745 turbo (B230FT just over hauled) and installed.
Questions:
1. what role does the crank sensor at the fly wheel play? Remember this is a turbo engine..does it complete the ground loop?? in there but seems to not go beyond the terminal attached to the valve cover??
2. How do i TEST the hall effect sensor, 2nd one installed (are two bad?) this is where i feel to be chasing my tail!
3.And would a fuel leak at the tank feed line to the secong pump cause a shut down of the pumps.
to summerize the dellema for those who have not been following my FUN so far:
-I have fuel to rail
-I have 12vdc at injectors
-I have no spark
-i do have 12vdc to both sides of coil
-i have both pumps activated with jumper
-all grounds are good
-FI relay is good/ had one fish eye I re-soldered it
-good fresh batt and a back up so ample amps
-radio suppresor seems good
-balast is good
-Plugs are bone dry no gasoline on them and no spark
......SO IF YOU HEAR A FUNNY SOUND COMMING FROM MICH IT IS ME BEATING MY HEAD IN CAR!
!thank in advance!
Dave in michigan (first one who guess the prob gets a beer!!!)









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FI and turbo questions,crank sensor /hall effect /fuel leaks causing no start?HELP!!!!!! 700 1987

1. None

2. Pull the distributor and, with the ignition on, see if there's 12 volts between the + and - terminals on the connector. Spin it and see if there's a 5 volt square wave on the middle terminal.

3. No.

You need a ground one side of the coil for spark; this comes from the "power stage" next to the battery, on the fender. Pull the connector and see if it's full of water.








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FI and turbo questions,crank sensor /hall effect /fuel leaks causing no start?HELP!!!!!! 700 1987

big break in the "case"!!! I was looking over the lead to the hall sensor testing it as descrided in FAQs (I new that info was there could not find it again), any way i had key to run wiggles the wire and the rear pump activated!!!!! There is a god!! So striped insulation and found ground and red wire had melted together !!! repaired tha t now still will not get fuel, I DO HAVE SPARK NOW!!! so not out of the woods yet but better!!








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FI and turbo questions,crank sensor /hall effect /fuel leaks causing no start?HELP!!!!!! 700 1987

If the Fuel Pressure Regulator has failed wide open then the gas goes round and round and won't inject?








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FI and turbo questions,crank sensor /hall effect /fuel leaks causing no start?HELP!!!!!! 700 1987

good thought ..gonna go check, but i did have some gas comming out buy the top of an injector, during testing of fuel pumps?? but hey i will try any thing..THANKS!!!








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FI and turbo questions,crank sensor /hall effect /fuel leaks causing no start?HELP!!!!!! 700 1987

RE: but hey i will try any thing..THANKS!!!

will ya try fixing my brick? *smile*
my Tach was twitching as i was driveing down the freeway today. the engine seemd to be running allright, but i think maby the hall sensor if failing?
how hard are they to fix on a 760 gle V6 (1985/1986)







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