[T2] CHT with Dakota gauge

[Sami Dakhlia]

Hi Martin,
I did try to finagle the compression washer off the spark plug in a
non-destructive way, but was unsuccessful and even with the sensor ring
between the washer and the plug, I did not expect a better seal, so gave up
on that idea. Glad to hear this can work.

My plan for next summer is to install a A/F gauge with a wide band O2
sensor and go from there. If too lean, I'll assume that the heads have been
damaged and I'll replace them. If the A/F mix turns out ok, I'll pull the
engine anyway to JBweld the thermocouple close to the plug. Or dremel a
notch so that the sensor ring can be installed flat, without a bend.

Cheers,
Sami

On Tuesday, August 25, 2015, Martin Strandgard <mnstra at unimelb.edu.au>
wrote:

> >Update on CHT. First of all, here's a picture of the sensor's o-ring,
> stretched into an egg shape on the first installation.
>
> Looking at the photo I would say that leaking exhaust gas is your problem.
> I have had the same problem with distortion of the sensor ring and fixed it
> by removing the original sealing washer from the spark plug putting on the
> sensor ring and replacing the sealing washer. It was a while ago but IIRC I
> got the sealing washer off by clamping it with a pair of pliers or vice
> grips and unscrewing it from the spark plug.
>
> Hope this helps,
>
> Martin
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