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-   -   I Think I Killed my 84 SFI, No Spark. (http://gnttype.org/forums/showthread.php?t=12791)

Keller 06-07-2009 07:39 PM

Re: I Think I Killed my 84 SFI, No Spark.
 
Quote:

Originally Posted by Rusty (Post 52230)
ok...lets try and establish a base line...lets say for srgument that my cam sensor is in fact now working but the cam may be wrong. does this equil spark at wrong timeing or no spark at all?

Spark at wrong timing.
Quote:

Originally Posted by Rusty (Post 52230)
also. to remove some of my confusion. when setting the cam am I suposed to turn the crank an aditional 25 degree;s beyond the 0 mark or back counter clock wise. I ask cuz my harmonic indicator reads counter clock wise from the 0 mark and goes to 20 degrees. get confused at this point. have tried both which ezplains some of my nightmare.

Facing the engine, you have to turn the engine clockwise while facing the engine. That is the way the engine spins. Also, this affects injector timing more than spark timing. See http://www.ajlc.waterloo.on.ca/cgi-b...2f199701%2f750 which is a statement made long ago by John Spina of Casper's Electronics when we had only a mailing list.

If you have the pump packed, it should prime on first start.

Rusty 06-07-2009 07:47 PM

Re: I Think I Killed my 84 SFI, No Spark.
 
1 Attachment(s)
Attachment 1633
wonder if this works...

Rusty 06-07-2009 07:52 PM

Re: I Think I Killed my 84 SFI, No Spark.
 
1 Attachment(s)
ok as you see I am using the outter grove.
it is not possible to us inner grove unless you....yes, slightly grind down the outter suport Fin so it will not rub on the ring attached to the harmonic balancer. you see, the old brack never had these fins on it so it has baffled me since.

Attachment 1634

I origanaly tried with sensor ring set in between these fins, which lines up with 2nd(inner) grove. once the outter fin was gound down a tad.

ok, understand the setting of ATDC now..still wonder though why the marks on it say + when you follow it counter clock wise. that guage I would assume is for timing light marks and how you read the fine tuning and has nothing to do with being TDC.
thanks for the sight. that was pretty clear. why can;t i find info like that...lol

Keller 06-07-2009 08:37 PM

Re: I Think I Killed my 84 SFI, No Spark.
 
Quote:

Originally Posted by Rusty (Post 52235)
why can;t i find info like that...lol

Maybe...because you didn't start the site? :lite:

kenmosher 06-07-2009 08:54 PM

Re: I Think I Killed my 84 SFI, No Spark.
 
2 Attachment(s)
That doesn't look like the correct crank sensor for some reason. The typical bracket holds a sensor (the has the wiring plugged into it) with two grooves.

See the two grooves in the BLACK sensor head?

Keller 06-07-2009 09:09 PM

Re: I Think I Killed my 84 SFI, No Spark.
 
http://www.ajlc.waterloo.on.ca/cgi-b...f199810%2f2216

No grinding on the sensor should be necessary. Is it the correct sensor?

Rusty 06-08-2009 11:38 AM

Re: I Think I Killed my 84 SFI, No Spark.
 
well that brings up another point I guess.
you see the mounting bracket that I got(had to order replacement holder with the sensor, can't get just holder) and when I looked at it, the sensor looked the same but the mounting bracket was widder at the sensor and now has small plate attached to sensor it's self. I did a highth cheak for cam sensor position and it seamed to match up. so I figured it was a simple design change) but it has been budding me all along.
any how, have set Crank to 25 ATDC and have opened cam sensor. it looks a off all right. but due to the location of 3Ci unit mounted just above it. space to turn the sensor seams very limited. seeing as the oil pump assembly was installed before the cam sensor was droped into place I am thinking the alighment of oil gear shaft(Groved) may have led me to "Jump a grove" when installing the cam, this may have resulted in wrong location of window on sensor combined with limited ability to turn the sensor very much. this sound possible? or am I again off in the wrong direction?

Keller 06-08-2009 12:40 PM

Re: I Think I Killed my 84 SFI, No Spark.
 
2 Attachment(s)
Frankly, I can't make any sense from what you said. Partially because of the sentence structure (or lack thereof). Partially because sometimes you appear to be talking about the cam sensor, and sometimes about the crank sensor.

The cam sensor is harder to access on the 84/85 cars because of where things are located. Just about everything is harder to access. The oil pump shaft should be able to be turned freely, and is not mated to the cam until it engages with the cam sensor. So spin it however it needs to be with a long screwdriver, then push the cam sensor in. Yes, it may take several tries to get things where you want it. But hopefully you will only be doing this once.

I am still not convinced you have the right crank sensor. However, not owning a 84/85 car I can not speak from authority. As many general parts places do, they often list the wrong pieces for these cars. Pictured is a crank sensor listed for the 84/85 TR in one such parts house's online catalog that I believe is NOT the right part. And it might be exactly what you have. Is it? Can someone confirm that this is wrong, and what Ken's pictures show is correct?

Just because Autozone/Advance/O'reillys/CSK/etc. says it is so in their catalog, doesn't mean s*&%. They also list a carbed V6 ECM in their catalog as a proper part for the 86/87 TRs, but I guarantee it won't even plug in, let alone work.

Rusty 06-08-2009 01:14 PM

Re: I Think I Killed my 84 SFI, No Spark.
 
the first thumbnail is the one that Napa got me. but the one that came out did not even have the metal fins on it at all.
but have old holder and sensor. next to me. will get pics soon. but ...

have cam sensor out and am doing back probing.

am reading 8.89 volts when key is first turned on...and then it goes up and builds to about 9.08....
I i have found that when window area matches up with sensor the voltage rises to 9.12 volts...

???

should'nt it be droping?

Keller 06-08-2009 01:22 PM

Re: I Think I Killed my 84 SFI, No Spark.
 
My first thumbnail? Ken's first thumbnail?

The pics of the finned sensor are presumably NOT the correct sensor.

Yes, it should drop. If it doesn't, its either not the right sensor or not set to the right slot. Or both.


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