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Help!!! fresh rebuilt won't start. |
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tached_out 
AMC Nut 
Joined: Feb/08/2008 Location: Vancouver, BC Status: Offline Points: 328 |
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 Posted: Jan/13/2018 at 4:27pm |
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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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tached_out
AMC Nut
Joined: Feb/08/2008 Location: Vancouver, BC Status: Offline Points: 328 |
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Posted: Jan/13/2018 at 4:43pm |
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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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farna
Supporter of TheAMCForum 
Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Offline Points: 19679 |
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Posted: Jan/13/2018 at 5:15pm |
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10 degrees BTDC (before top dead center).
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Frank Swygert
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Jay68SST
AMC Apprentice 
Joined: May/23/2016 Location: Arcadia, KS Status: Offline Points: 189 |
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Posted: Jan/15/2018 at 11:39am |
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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 11:42am |
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Jay68SST
AMC Apprentice
Joined: May/23/2016 Location: Arcadia, KS Status: Offline Points: 189 |
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Posted: Jan/28/2018 at 6:56pm |
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YES!!!!! I finally got it running. It was spark! Bought a new HEI distributor, new wires and new plugs. Installed them and it fired up immediately. I ran it for about 20-25 minutes at 2000-2200 RPMs to break in the cam. Oil pressure was great, and temp never rose above 180. I then set the idle removed the vacuum advance line and set the timing at 10 degrees TDC.
What even makes it better was that it is my birthday, what a great birthday gift! Video below https://www.youtube.com/watch?v=z5uGLI2jHwA&feature=youtu.be
Edited by Jay68SST - Jan/28/2018 at 7:25pm |
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73hornut
AMC Addicted
Joined: Jul/03/2007 Location: Southern Oregon Status: Offline Points: 3130 |
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Posted: Jan/28/2018 at 7:03pm |
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That is good news, Happy birthday!
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71 Javelin
74 Gremlin 79 Spirit AMX Rogue Valley Rumblers Like Us on FB https://www.facebook.com/groups/1602825606650796 |
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myrambler
AMC Nut
Joined: Oct/10/2012 Location: Cedar Rapids,IA Status: Offline Points: 298 |
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Posted: Jan/28/2018 at 7:18pm |
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Happy birthday Jay and congratulations. This is awesome news. So glad to hear it wasn't something major.
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Jay68SST
AMC Apprentice
Joined: May/23/2016 Location: Arcadia, KS Status: Offline Points: 189 |
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Posted: Jan/28/2018 at 7:26pm |
https://www.youtube.com/watch?v=z5uGLI2jHwA&feature=youtu.be
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69 ambassador 390
Supporter of TheAMCForum
Joined: Nov/22/2009 Location: Peoria, AZ Status: Offline Points: 3539 |
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Posted: Jan/28/2018 at 7:44pm |
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Good job. Now I hope you installed the matched distributor gear on the new distributor!!
Don't use the one that came on the distributor from the box!!! |
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Steve Brown
Algonac, Mi. 69 Ambassador sst 390 84 Grand Wagoneer 69 Cougar XR7 65 Fairlaine 500XL 79 F-350 Super Camper Special |
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Jay68SST
AMC Apprentice
Joined: May/23/2016 Location: Arcadia, KS Status: Offline Points: 189 |
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Posted: Jan/28/2018 at 8:51pm |
Yes, I changed the gear, read too many horror stories.
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myrambler wrote: