Tractor Forum banner

1 - 20 of 24 Posts

·
Premium Member
Joined
·
3,786 Posts
Discussion Starter #1
Well, I got spark --- cleaned the points and fixed everything electrical and got good clean blue spark across electrode. Tried doing my own compression test but apparently my tester doesn't screw directly into this size plugs opening (too small for this engine) --- uses something like Champion Com D-16s or D-21s.
Rebuilt carb and cleaned out completely. (was leaking before and gaskets were cut) - got those replaced and no leaks but still no start with hand crank. This is a 6-digit model A and therefore has the "Model K" carb design I believe. Looks similar to this engine but has different carb. Also there is a "spring lever" of some sort connected to the side of carb --- What is this for and in what position should it be in?

I set the main jet, screws etc to standard specs and didn't see any glaring problems with the carb assembly (besides leaks, gaskets and need to be cleaned out a little) --- I set the carb to choke position to start and still nothing. I think it is either a fuel delivery problem or some kind of compression issue (cannot imagine since it does have quite a lot of pressure) --- did the ole' thumb over the hole trick --- probably above 100#s -- (used to doing this with my big tractors and restoration projects over the years)

Any ideas?????? Kevin?

Thanks
Andy
 

·
EX Super Mod
Joined
·
5,317 Posts
Pour a little gas in the spark plug hole at least then you will have gas in the cylinder. It should pop or start for a second or too.:smiles:
Jody:usa:
 

·
Premium Member
Joined
·
3,786 Posts
Discussion Starter #5
Yeah I know about the ole' gas in the cylinder --- will try it and then try to figure out what is up with my carb system. It is a Briggs Flo-Jet carb assembly -- Type K ----

Will report back the findings. :)

Thanks
Andy
:alien:
 

·
Premium Member
Joined
·
3,693 Posts
If you can feel compression with your finger over the plug hole, I would think it would be enough to start. You are also forgetting one important part of what a 4 cycle motor needs to run. Timing. All the spark,fuel, and compression in the world are not going to do anything if the spark hits at the wrong time. Now granded, I have NO idea how to check it on that motor, just something to think about if the rest of the tests don't work.
 

·
Premium Member
Joined
·
3,786 Posts
Discussion Starter #7
Ahh, yes timing. Is there a clock in there (digital or analog) that I need to set the time to? I see one on the top but it is flashing 12:00 12:00 12:00 12:00 ---- :D

Hey, it is early what else do you expect! ;) (been up since 3am)

I don't know to set the timing on this engine either. Guess it is time to go buy one of those reproduction Briggs manuals for antique engines and get to perusing.

Thanks I444, for the reminder.

Andy
 

·
Premium Member
Joined
·
1,443 Posts
OH GOD... I remember when I rebuilt my LeMans. I put the mark on the engine block for the distributer before yanking everything off. I remember putting it back together and playing the turning game with the strobe. What a funny exercise on a car.
 

·
Premium Member
Joined
·
139 Posts
If the flywheel key is intact, the engine should be in time. Of course, there's only one way to find that out.
 

·
Premium Member
Joined
·
3,786 Posts
Discussion Starter #11
T,

Thanks

I think I need to find someone who might have a rebuild kit for this flojet carb -- type K from Briggs --- circa 1940 ---- I am sure that it might cross-reference to some still available part --- I just need to find out which one.... Arrgh!

:D

Andy
 

·
Registered
Joined
·
207 Posts
Andy, If you want that old repair manual, just let me know. I have them in stock and you know the special prices that you get. Tony:party:
 

·
Registered
Joined
·
32 Posts
I recently had somewhat of the same problem with the B&S on my Landlord. It would run, but ran rough, missed, and backfired. During troubleshooting, I checked the spark at the plug and it looked good. After rebuilding the carb, checking the valves, etc., I replaced the points and condensor and it fired right up.

Just my 2 cents.

coal_man
 

·
Premium Member
Joined
·
3,786 Posts
Discussion Starter #14
Originally posted by amicks
Andy, If you want that old repair manual, just let me know. I have them in stock and you know the special prices that you get. Tony:party:
Tony, yes let me know if it is this one below, I will take it!
PM me with the info and will give you my Visa #. Thanks! Andy
:pedro:

<center><img src=http://www.tractorforum.com/pics/brman.jpg></center>
 

·
Premium Member
Joined
·
3,786 Posts
Discussion Starter #15
Originally posted by coal_man
I recently had somewhat of the same problem with the B&S on my Landlord. It would run, but ran rough, missed, and backfired. During troubleshooting, I checked the spark at the plug and it looked good. After rebuilding the carb, checking the valves, etc., I replaced the points and condensor and it fired right up.

Just my 2 cents.

coal_man
That is strange. I dropped the carb again checking for a stuck float or something. It looks like the lever below the carb has the capability of shutting off the engine (open/close) --- still checking.
Strange about the sparkies!

Thanks for the info
Andy
 

·
Registered
Joined
·
6 Posts
Andy,

Is your main fuel nozzle (jet) about 2.5 to 3 inches long with 4 small holes in it? Apparently, these Flo-Jet nozzles are easy to break when you disassemble the carburetor (you need to remove the nozzle before you separate the upper and lower carburetor halves).

John Phillips
 

·
Premium Member
Joined
·
3,786 Posts
Discussion Starter #18
Originally posted by John Phillips
Andy,

Is your main fuel nozzle (jet) about 2.5 to 3 inches long with 4 small holes in it? Apparently, these Flo-Jet nozzles are easy to break when you disassemble the carburetor (you need to remove the nozzle before you separate the upper and lower carburetor halves).

John Phillips
Yes, it is exactly that. :D ---- I will go try and post a couple pics tonight. I am not on my "powerhouse" PC and actually just using a wireless laptop 802.11b connection now in my living room. Let me see what I can do. Looks like it may have been bored over as the piston head reads .010 or something. --- What is your source for parts (gaskets, fuel filters, points etc) for these old engines?

Thanks
Andy
 
1 - 20 of 24 Posts
Top