Johnson FD-12 Won’t Run

[olcah]

Nice, nice job!  Looking and running like new.

[Bob Wight]

I forgot to say thanks to all of you who responded with feedback on my original running problems – much appreciated.

Bob

1937 Champion D2C Deluxe Lite Twin
1954 Johnson CD-11
1955 Johnson QD-16
1957 Evinrude Fastwin 18
1957 Evinrude 3022
1958 Johnson QD-19
1958 Johnson FD-12
1959 Johnson QD-20
1982 Evinrude 25hp

“Every 20 minute job is only a broken bolt away from a 3-day project.”
"Every time you remove a broken or seized bolt an angel gets his wings."

[Buccaneer]

Sounds good Bob, but it’s “crying” to get on a boat and go wild!

Prepare to be boarded!

[Bob Wight]

Buccaneer wrote:

Sounds good Bob, but it’s “crying” to get on a boat and go wild!

Yes, it is.    I think it might be a real screamer.

Bob

1937 Champion D2C Deluxe Lite Twin
1954 Johnson CD-11
1955 Johnson QD-16
1957 Evinrude Fastwin 18
1957 Evinrude 3022
1958 Johnson QD-19
1958 Johnson FD-12
1959 Johnson QD-20
1982 Evinrude 25hp

“Every 20 minute job is only a broken bolt away from a 3-day project.”
"Every time you remove a broken or seized bolt an angel gets his wings."

[Don]

Bob Wight wrote:

OK, after replacing the defective fuel pump and installing new OMC/BRP coils, I’m declaring victory.   Seems to run good now.   You’ll notice in the video that after tweaking the carb adjustments, the low speed needle knob needs to be moved to point downward toward the scale and at the very end of the video, the high speed needle was a little loose and opening richer and just needed the packing nut tightened up a bit.   Final carb adjustments will be done once it gets on a boat.

https://www.youtube.com/watch?v=FTsDbD03vHg

Sure sounds nice now.  Perhaps the diaphragm was messed up in that original fuel pump creating a crankcase leak to that cylinder causing the lean spit.  Never argue with success, now get out and show it off!

[Tubs]

Been an interesting and informative read with
the end result being your ready for spring.
Pretty good timing I’d say.
Tubs

A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.

[Author]

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