Re: '40 Ignition cables recommendation

Posted by Joe Santana On 2012/8/4 0:46:35

I advanced the engine to the damper marks. The rotor was the roughly 2 o'clock position. I measured the distance to the top of the valve through the spark plug hole with a swab and marked it.

I advanced the engine to the next revolution to get the damper marker. The rotor now pointed to roughly the 7 o'clock position. I marked the swab stick and the distance was less. So I concluded that the valve was open at the this position. This would not be the compression stroke.

I then knuckled under and removed all the plugs. Surprisingly I was able to rotate the engine by the fan counter clockwise approaching the damper marker. I could feel any difference between the 2 o'clock position and the 7 o'clock position holding my finger over the spark plug hole while turning the fan. I think it took too much energy, but I couldn't feel any compression.

Then I remembered I had a compression tester. I added the adapter and screwed it in. I used the starter to turn just past the 2 o'clock rotor position. No reading.

I did the same for the 7 o'clock position and got a reading.

The valve is maybe an intake valve, if it's open during the compression stroke? (which is what it is, at the 7 o'clock position.)

It still doesn't run, but I think 7 o'clock in #1, which is the way I have it set up.

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