Re: Ignition timing out of sync?

Re: Ignition timing out of sync? - Saab 9000 Bulletin Board - Saabnet.com

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Re: Ignition timing out of sync? Posted by Ben [Email] (more from Ben) on Sat, 4 Apr 2015 11:45:01

In Reply to: Re: Ignition timing out of sync?, Simon S, Sat, 4 Apr 2015 10:53:28 Members do not see ads below this line. - Help Keep This Site Online - Signup

Okay, I checked things out. The original DI is in fact a genuine Saab part. I tried my spare, also genuine, to no avail. Pulled the valve cover, rotated the engine twice through TDC, and everything is still lined up.

It sounds like there's no mechanical distinction between TDC at cylinder 1 or cylinder 4, so my thought of being timed to cylinder 4 is invalid; if I turned the engine until the cam marks were at 180 degrees, then pulled them and realigned to the TDC mark, the DI wouldn't know the difference as it reevaluates the compression stroke on every start up. Correct?

My other thought was that I was sloppy with the dielectric grease and got some on the plugs, so I cleaned everything up and swabbed the DI springs. But that wasn't the case either.

Plugs 2 and 3 are wet. Clearly those didn't try to fire. Plug 4 is dry. Plug 1 is considerably less wet, but still has some fuel residue around the electrode.

Compression is still 185+ across all cylinders.

Posts in this Thread:

Ignition timing out of sync?, Ben, Sat, 4 Apr 2015 08:08:16
- Re: Ignition timing out of sync?, Simon S, Sat, 4 Apr 2015 10:53:28
  - Re: Ignition timing out of sync?, Ben, Sat, 4 Apr 2015 11:45:01 <-- Viewing This Message
    - Re: Ignition timing out of sync?, Simon S, Sat, 4 Apr 2015 12:07:49
      - What's the purpose of this part, Ben, Sat, 4 Apr 2015 13:08:35
        Re: What's the purpose of this part, Simon S, Sun, 5 Apr 2015 14:24:02
      - Re: Ignition timing out of sync?, Ben, Sat, 4 Apr 2015 12:50:09
        Multiplug into DI pushed in all the way?, RayF, Sat, 4 Apr 2015 13:40:44
        Re: Multiplug into DI pushed in all the way?, Ben, Sat, 4 Apr 2015 15:10:28
        You've never said, why was it in sick bay?, RayF, Sat, 4 Apr 2015 16:11:04
        Re: You've never said, why was it in sick bay?, Ben, Sat, 4 Apr 2015 17:49:40
        Re: You've never said, why was it in sick bay?, Simon S, Sun, 5 Apr 2015 14:29:36
        Anyway, I was hoping for some kind of clue..., RayF, Sun, 5 Apr 2015 16:40:52
        Re: Anyway, I was hoping for some kind of clue..., Ben, Mon, 6 Apr 2015 09:01:13
        Re: Anyway, I was hoping for some kind of clue..., Simon S, Mon, 6 Apr 2015 11:03:32
        CPS wiring comes around end of head., RayF, Mon, 6 Apr 2015 11:37:11
        Re: CPS wiring comes around end of head., Ben, Mon, 6 Apr 2015 14:38:25
- No more cranking, turn over by hand..., RayF, Sat, 4 Apr 2015 08:18:18
  - what if..., Ben, Sat, 4 Apr 2015 10:03:50
  - here's a video, Ben, Sat, 4 Apr 2015 09:57:08
  - Re: No more cranking, turn over by hand..., Ben, Sat, 4 Apr 2015 09:12:18
    - Re: No more cranking, turn over by hand..., Simon S, Sat, 4 Apr 2015 10:46:46
      - Re: No more cranking, turn over by hand..., Ben, Sat, 4 Apr 2015 10:50:59
        Re: Yes there is..., Street, Sun, 5 Apr 2015 23:58:49
        Re: No more cranking, turn over by hand..., Name Left Blank, Sat, 4 Apr 2015 10:56:10
        But I'd think, that way madness lies..., RayF, Sat, 4 Apr 2015 13:27:41

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Prev by Date: Re: No more cranking, turn over by hand..., Name Left Blank, Sat, 4 Apr 2015 10:56:10
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