The Official Fuel Injector Thread
04-04-2008, 09:47 AM
#91
Supercharged
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The signal from the crank sensor could be checked by disconnecting the EZK plug and connecting the oscilloscope to terminals 6 and 23. Terminal 6 is the negative, and terminal 23 is the positive from the crank sensor. Crank the engine and the wave form you should see is shown on page D 28-11 of the shop manuals. If you get a good signal there on the occasions when the car won't start, reconnect the plug to the EZK, disconnect the plug from the LH, and connect to the LH plug terminals 1 and 17. Terminal 1 is positive and terminal 17 is ground. Check there for that same signal that you got earlier in the thread at W11. If you get a good signal at those EZK 6 and 23 terminals but nothing at the LH 1 and 17 terminals, the issue is with the EZK or the wiring coming out of it that supplies the tach signal to the LH.
I need to meet this Z guy one of these days! 
BTW, I finished building my black box last night. So I, too, now have an ocsilloscope!
04-04-2008, 01:26 PM
#92
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Got my vote…wow thanks Z, that is very helpful! I'll go back and look at the diagram and see if I can follow that.
Last night I put the car up on jack stands and crawled under, the Oil pan and or Rear Main has a bad leak, after speaking w/Paul this morning I am going to R&R that next and also check the ”flex Plate”.
Thanks again!
DaveK9
Last night I put the car up on jack stands and crawled under, the Oil pan and or Rear Main has a bad leak, after speaking w/Paul this morning I am going to R&R that next and also check the ”flex Plate”.
Thanks again!
DaveK9
04-04-2008, 01:43 PM
#93
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My $.02 contribution on injectors...
A couple of years ago I had my injectors cleaned and flowed locally. I paid something crazy - like $45 each for the service. My justification was that it was better then paying for new.
Fast forward to a couple weeks ago...my 951 develops a leaky injector. I happened across MotorMan Fuel Injection in Michigan. This guys sells rebuilt injectors for $29 each, or will rebuild yours for $19 each. I sent my injectors to him via USPS Priority, and got them back in a week. They work LIKE NEW!
No affiliation - just a very pleased customer. His site is www.injectors4u.com
A couple of years ago I had my injectors cleaned and flowed locally. I paid something crazy - like $45 each for the service. My justification was that it was better then paying for new.
Fast forward to a couple weeks ago...my 951 develops a leaky injector. I happened across MotorMan Fuel Injection in Michigan. This guys sells rebuilt injectors for $29 each, or will rebuild yours for $19 each. I sent my injectors to him via USPS Priority, and got them back in a week. They work LIKE NEW!
No affiliation - just a very pleased customer. His site is www.injectors4u.com
