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-   -   Engine Timing (https://www.miataturbo.net/engine-performance-56/engine-timing-90683/)

Woogi 09-27-2016 05:08 PM

Engine Timing
 
So I went the check timing on my 1.6, and wanted to confirm something.

I jump the TEN and GND pin and connect the timing light to Cyln 1. However, while I am aiming for 14 Degree, it seems the car runs quite rough at 14, and not sure if it would be stable at 10, however, if its advanced to 16, 18 or even slightly higher the idle smooths out quite a bit.

Once the jumper is removed, it idles ok and I have never had an issue with stalling, but a do get some dancing of the timing light/timing mark as well as the RPM's dance a little when i get it at 14 degrees. (two marks to the passenger side of the 10 degree mark)

Godless Commie 09-27-2016 07:49 PM

I would check the crank pulley.

Specifically, whether or not the keyway is damaged somehow, allowing the pulley to rotate about the crank nose.

You can also check the timing belt marks, and see if everything lines up properly. That would tell you if your crank pulley is spot on, too.

albumleaf 09-27-2016 08:30 PM

The pulley itself can also be separated and your indicated timing could be off by quite a bit.

Woogi 09-28-2016 11:57 AM

2 Attachment(s)
I checked timing gear this morning (see attached) and everything looks good there. Do you agree?

Godless Commie 09-28-2016 11:59 AM

That does not show the pulley.
How about the timing mark on the pulley?

Woogi 09-28-2016 12:02 PM

Let me reinstall the pulley, but from a brief inspection, everything LOOKS ok.

Godless Commie 09-28-2016 12:03 PM

Please post a pic of the pulley without moving the engine.

sixshooter 09-28-2016 05:40 PM

The outer ring of the pulley with the marks moves versus the center when the bonded rubber ring between them gets old. That's what is wrong and why they are asking for reference pics.


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