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Exbellicus
MMT Pro Member
Joined: Sat Oct 15, 2016 4:59 pm Posts: 126
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45 Mag 1 Cylinder Not Firing
Posting for a friend:
New coils, new spark plugs both sparking. Bypass kill switch no change. Cleaned carb, .005 valve clearance. 190 compression and passed leak down. Rods are straight.
Any ideas?
_________________ 2016 Prodrive X 1848 37efi
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Sun Dec 09, 2018 8:37 pm |
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lastchance
MMT 1000 Club
Joined: Wed Feb 09, 2011 1:56 pm Posts: 1646 Location: Chauvin
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Re: 45 Mag 1 Cylinder Not Firing
Check the diodes that connect to the coils.
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Sun Dec 09, 2018 11:26 pm |
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Will C
MMT Sponsor
Joined: Fri Jan 10, 2014 1:16 pm Posts: 2107 Location: Gladewater TX
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Re: 45 Mag 1 Cylinder Not Firing
If it's cylinder #1 I've seen the the vacuum fuel pumps leak fuel into the pump signal line flooding the num1 cylinder
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Mon Dec 10, 2018 12:25 am |
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MaXXis85
MMT Elite Member
Joined: Wed Jan 14, 2009 7:23 am Posts: 6233 Location: Tarkington, TX
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Re: 45 Mag 1 Cylinder Not Firing
_________________ Bayou Surface Drive 337-351-0362 Tarkington, TX 77327
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Mon Dec 10, 2018 7:16 am |
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Exbellicus
MMT Pro Member
Joined: Sat Oct 15, 2016 4:59 pm Posts: 126
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Re: 45 Mag 1 Cylinder Not Firing
He says his engine doesn't have diodes connected to the coils on his engine and if you're standing behind the boat it's the right side not working
_________________ 2016 Prodrive X 1848 37efi
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Mon Dec 10, 2018 12:38 pm |
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Will C
MMT Sponsor
Joined: Fri Jan 10, 2014 1:16 pm Posts: 2107 Location: Gladewater TX
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Re: 45 Mag 1 Cylinder Not Firing
That would be cylinder number 2. That eliminates the possibility of the fuel pump. Next I would remove cowling and inspect the intake gasket going to the head. Gasket may be popped.
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Tue Dec 11, 2018 12:13 am |
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Exbellicus
MMT Pro Member
Joined: Sat Oct 15, 2016 4:59 pm Posts: 126
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Re: 45 Mag 1 Cylinder Not Firing
Turned out to be a bad oil sensor
_________________ 2016 Prodrive X 1848 37efi
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Tue Dec 11, 2018 12:36 pm |
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Exbellicus
MMT Pro Member
Joined: Sat Oct 15, 2016 4:59 pm Posts: 126
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Re: 45 Mag 1 Cylinder Not Firing
Nevermind... Problem is back
_________________ 2016 Prodrive X 1848 37efi
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Tue Dec 11, 2018 7:34 pm |
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Will C
MMT Sponsor
Joined: Fri Jan 10, 2014 1:16 pm Posts: 2107 Location: Gladewater TX
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Re: 45 Mag 1 Cylinder Not Firing
Problem was just in the carb setup. It's alive and running good now
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Fri Dec 21, 2018 10:45 am |
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Fowl Play
New Member
Joined: Sat Jul 23, 2011 7:42 pm Posts: 1
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Re: 45 Mag 1 Cylinder Not Firing
Found that I am having the same problem. Right side standing behind the motor doesnt appear to be firing. What did you find in the carb setup that created the problem? I found mine not firing when trying to adjust the idle. I cannot get the motor to idle properly at all.
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Fri Dec 21, 2018 10:38 pm |
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Will C
MMT Sponsor
Joined: Fri Jan 10, 2014 1:16 pm Posts: 2107 Location: Gladewater TX
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Re: 45 Mag 1 Cylinder Not Firing
When it came in I noticed a idle fuel screw broken off in carb. Set valves, it passed a leakdown . I got the broken screw out and freshened up carb. Ran good after that
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Sun Dec 23, 2018 8:52 pm |
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