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willysmjeeps.com :: View topic - Distributor wire location incorrect
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Distributor wire location incorrect

 
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JeepdaddyRC
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Joined: Jan 10, 2020
Posts: 37

PostPosted: Mon Jan 25, 2021 3:14 pm    Post subject: Distributor wire location incorrect Reply with quote

New to the M38A1. After reviewing the corrected manual, I see the plug wires are not in correct position. Number 4 is at bottom left (7:00 o'clock position).
Then moving counter clockwise we have 2, 1, 3. The marks on the flywheel for TDC line up when the rotor is at the #4 position.

Based on my reading the oil pump was not clocked correctly. Do I need to change it, or can I run the timing light at the #4 plug wire?
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wesk
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Joined: Apr 04, 2005
Posts: 15242
Location: Wisconsin

PostPosted: Mon Jan 25, 2021 11:48 pm    Post subject: Reply with quote

Your best course of action is to correct the timing from scratch. Usually incorrect initial oil pump to distributor timing results in a reduced adjustment swing of the housing for dynamic timing adjustments.
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Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php
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JeepdaddyRC
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Joined: Jan 10, 2020
Posts: 37

PostPosted: Tue Jan 26, 2021 12:42 pm    Post subject: Reply with quote

Thank you Wes.
Until I correct the oil pump clocking, can I time this engine with the timing light at the #4 plug wire?
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wesk
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Joined: Apr 04, 2005
Posts: 15242
Location: Wisconsin

PostPosted: Tue Jan 26, 2021 1:05 pm    Post subject: Reply with quote

I didn't answer that question the first reply because I have insufficient evidence to make that determination. You can try if you like but anytime we let our jeeps remain configured half-arsed we face trouble in the long term.
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Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php
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JeepdaddyRC
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Posts: 37

PostPosted: Tue Jan 26, 2021 6:02 pm    Post subject: Reply with quote

This will show my newbie status.
Does the crankcase need to be drained to remove and re clock the oil pump groove that mates with the distributor?
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wesk
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Joined: Apr 04, 2005
Posts: 15242
Location: Wisconsin

PostPosted: Tue Jan 26, 2021 11:45 pm    Post subject: Reply with quote

No
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Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php
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