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Help!!! fresh rebuilt won't start.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote tached_out Quote  Post ReplyReply Direct Link To This Post Posted: Jan/13/2018 at 5:27pm
Please let me clarify. If the manual says advance the distributor, I'm assuming (perhaps erroneously) that you plan to achieve that by turning the distributor in a clockwise direction. If so, this is wrong. This is advancing the distributor's position in the block but it has the opposite effect on timing. 

In a running engine, the distributor shaft rotates clockwise. When adjusting the spark timing you advance the spark by rotating the distributor housing counterclockwise, against the direction the shaft turns. You retard spark by rotating the distributor housing clockwise, in the direction the shaft turns.

In your case, setting timing in a not running engine, if you want to make the points open when they should by rotating the distributor, you have to turn it backwards against shaft rotation so the points open on the front of the cam. This is advancing the spark, but it is retarding the position of the distributor in the block.

I'm sorry if I confused the issue.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tached_out Quote  Post ReplyReply Direct Link To This Post Posted: Jan/13/2018 at 5:43pm
Even with this said, you're going to be off with your initial setting. You should be setting initial timing at more like 10 degrees not TDC. Plus you should use a test light to determine accurately when the points are opening, not watching to see when they begin to open.

Your timing light will tell you how close or far off you were if you use it to check your timing before you attempt to start it.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote farna Quote  Post ReplyReply Direct Link To This Post Posted: Jan/13/2018 at 6:15pm
10 degrees BTDC (before top dead center).
Frank Swygert
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jay68SST Quote  Post ReplyReply Direct Link To This Post Posted: Jan/15/2018 at 12:39pm
Well, I had a little time between snow storms to make it out to the shop.  I removed all the spark plugs and I also removed the valve covers. The plugs were little wet from fuel. I did a compression test and all 8 cylinders had a compression between 147-150 psi. So I ruled out valves not closing.  

I followed a couple of the recommendations here.  I watched #6 cylinder valves and just when they started to open I checked #1 cylinder and it was on the compression stroke, the compression gauge was also showing compression. The timing mark on the balance was @ 5 degrees BTDC. So I left it there.  I checked my distributor and the rotor was right on they #1 spark plug location.

I then installed the rotor and inserted a plug into the #1 wire, and checked the spark. I believe this is my problem as my spark was intermittent and a very pale orange color, not the sharp crisp blue it needs to be.

Going to get new plugs, wires, rotor and coil and go from there. Once I get everything I am going to time to 10 BTDC without the plugs in.

I will let everyone know as things progress.  


Edited by Jay68SST - Jan/15/2018 at 12:42pm
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