Stalling in 3rd Gear

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FredS
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Joined: Fri Jan 22, 2016 5:35 am
Zip Code: 54481
Tractors Owned: '48 Cub
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Stalling in 3rd Gear

Postby FredS » Mon Apr 25, 2016 3:22 pm

So I cleaned out the air cleaner system, and rebuilt the carb. It's going into a lower idle without stalling than before, which is good, but it still stalls out if you try to 3rd gear. It is running an inline fuel filter (which I'm not a fan of) for now, but I do have the sediment bowl assembly, and have a new fuel line on the way to convert it back.

Any other ideas that I'm missing?

Eugene
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Re: Stalling in 3rd Gear

Postby Eugene » Mon Apr 25, 2016 3:42 pm

Compression tests, dry then wet. Post results.

If compression is satisfactory, a complete engine tune up.
I have an excuse. CRS.

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yaume
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Location: rohan, morbihan, brittany, france

Re: Stalling in 3rd Gear

Postby yaume » Mon Apr 25, 2016 4:03 pm

Hello,
I'd check timing first.
what makes my cub very rare is that it's the only one I've ever owned.

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Urbish
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1947 Farmall H
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1953 Willys CJ3B
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Location: Manchester, MI

Re: Stalling in 3rd Gear

Postby Urbish » Mon Apr 25, 2016 4:34 pm

Mine would sputter and die when under heavy load or taking off in 3rd gear right after I bought it. A quick timing adjustment was all it needed to work great again.

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FredS
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Zip Code: 54481
Tractors Owned: '48 Cub
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Re: Stalling in 3rd Gear

Postby FredS » Wed Apr 27, 2016 2:21 am

Thanks for the ideas guys. I'm leaning towards the compression issues, nothing sounds "off," but I am getting some blow-by smoke out of the oil fill at low rpms. I'll have to track down a compression tester and see what it says.

staninlowerAL
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Tractors Owned: Cubs: (3)'49's, (1)'52, (1)'57 IH Cub LoBoy w/FH, (1)'72 154 Number Series Loboy, '76 Longstripe w/FH, Mowers: C-22, Bush Hog 412, Pennington 59, Woods RM42CF, Woods 42, assorted FCub plows, planters, discs, etc. OTHERS: '49 AC B & Ind. Sickle mower, '61 AC D12 Ser 2, '52 8N, '56 Ferguson 35 Deluxe, '53 MM BG (offset), (2) '49 Avery V's, '56 JD 420C, with Blade and fire plow, '85 JD 850 (Yanmar) w/72" belly mower, '76 Yanmar 1500, Sears Surburban's, MTD's, Jeeps & other misc. "treasures"
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Re: Stalling in 3rd Gear

Postby staninlowerAL » Wed Apr 27, 2016 5:43 am

Low power and blow-by from the oil filler = worn rings allowing compression to escape into the oil pan. You're on the right track to check compression. Poorly seating valves = hard starting but no blow-by from the oil filler. Good luck. Stan


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