351m won't start
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Junior User
Joined: Aug 2019
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351m won't start
I just finished rebuilding my 351m and dropped it in last week and have been trying to start it up since any help would be very appreciated
The engines got plenty of air, I've tried gasoline and starting fluid, engine timing is correct, compression on all cylinders is good, timing chain was correct when installed.
I get plenty of backfires through the headers but it just doesn't want to light at all. I am lost so if anyone has an idea of what to do I'm all ears
The engines got plenty of air, I've tried gasoline and starting fluid, engine timing is correct, compression on all cylinders is good, timing chain was correct when installed.
I get plenty of backfires through the headers but it just doesn't want to light at all. I am lost so if anyone has an idea of what to do I'm all ears
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Junior User
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Yessir I did that too and it was still the same result somehow
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Junior User
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That's what I thought too but I went over the engine timing multiple times now and nothing's changed. Maybe my timing chain skipped a link or something
Post Fiend
Joined: Apr 2002
Posts: 19,311
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From: Waterloo, Iowa
Imagine that was done already ... when replacing timing set, but something is wacky ... Wonder what it is
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Junior User
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Yeah something is super wacky. Thanks for the replies
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Fleet Mechanic
Joined: Jul 2017
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From: KY
Is it possible its a 180% out of time,,are you sure it was on compression stroke ? I know I have done this a couple times on older engines,this will try to start an back fire if 180% out
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Thread Starter
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Junior User
Joined: Aug 2019
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I'm almost 99% positive that it was. I held my thumb over the spark plug hole and felt pressure and put a screwdriver down the hole and made sure it was at the top
Fleet Mechanic
Joined: Jul 2017
Posts: 1,276
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From: KY
Wont hurt to try and flip it around at this point as its an easy way to try
Post Fiend
Joined: Apr 2002
Posts: 19,311
Likes: 97
From: Waterloo, Iowa
Just for anyone following along, moving the plug wires around on the cap is easier than restabbing distributor. #1 goes to #6 and continue in normal firing order.
Fleet Mechanic
Joined: Jul 2017
Posts: 1,276
Likes: 12
From: KY
Very true your absolutely right ,as long as wires work out and ones not to short doing it that way
Laughing Gas
Joined: Apr 2016
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From: Buffalo NY
Post Fiend
Joined: Apr 2002
Posts: 19,311
Likes: 97
From: Waterloo, Iowa
Double check firing order ;Ford 351C, 351M, 400M Firing Order | GTSparkplugs