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Cub only runs on cyl 1 and 2

The Cub Club -- Questions and answers to all of your Cub related issues.
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Clark Thompson
10+ Years
10+ Years
Posts: 1573
Joined: Sun Feb 02, 2003 11:01 pm
Zip Code: 36310
Tractors Owned: 1975 IH cub,1948 farmall cub,1979 international 3200 skid steer and a 1974 John deere 350B dozer.
Location: Abbeville Alabama

Re: Cub only runs on cyl 1 and 2

Postby Clark Thompson » Fri Mar 22, 2013 10:04 am

I agree, that with that amount of compression it should fire . It might be the spark plug wires where they go through the grommet on the head. could be going to ground there even if new wires. another thought is if the wires are carbon fiber core. I have had a lot of trouble with these on many different tractors. make shure they are wire core. Never use carbon wires on a magneto . the coil will fail.
Collector of Farmall cubs and cub cadets.Injoy helping people keep their cubs running. Years of experipnce.

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Clark Thompson
10+ Years
10+ Years
Posts: 1573
Joined: Sun Feb 02, 2003 11:01 pm
Zip Code: 36310
Tractors Owned: 1975 IH cub,1948 farmall cub,1979 international 3200 skid steer and a 1974 John deere 350B dozer.
Location: Abbeville Alabama

Re: Cub only runs on cyl 1 and 2

Postby Clark Thompson » Fri Mar 22, 2013 10:06 am

easy thing to do is replace the plugs.
Collector of Farmall cubs and cub cadets.Injoy helping people keep their cubs running. Years of experipnce.

WLM Cub
10+ Years
10+ Years
Posts: 67
Joined: Mon Aug 20, 2012 6:12 pm
Zip Code: 37801
eBay ID: bill6883
Tractors Owned: 49 Cub, 52 Cub, 57 Cub,71 MTD, Unico, Another 71 MTD Unico, 93 Craftsman, GT 6000, 97 Yard Machines and more.
Location: Maryville, Tn.

Re: Cub only runs on cyl 1 and 2

Postby WLM Cub » Fri Mar 22, 2013 3:18 pm

Did you check the dist shaft to maks srue it is running in a circle and not an oblong circle. Did mine last week and the shaft was bent so the lobes were nit opening the points on cyls.3&4. pulled the dist.and took apart to find it bent above the c.weights. took the advance shaft [wich was siezed] off after some persuasion and cleaned it all up and streighting the shaft freed up everything lubed and ass.it with new points and the gap was the same on 4 all lobes. Good to go and runs great on all cyls. Bill wlm cub

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pickerandsinger
10+ Years
10+ Years
Posts: 1501
Joined: Thu Oct 18, 2012 3:23 pm
Zip Code: 13143
Tractors Owned: 1957 Cub Low Boy w/ FH Mott Flail Mower
1953 Cub w/ sprayer and 54A blade (Chompers)
1954 Cub w/fast hitch (Ira)
1948 Cub ( Papa Paul)with Henderson loader..
1951 Mutt mix Cub (BattleAx
1950 Farmall Cub (basket case demo)
Cub parts tractor
2019 " KuB"ota 2601 loader and roto tiller
1951 Ferguson TEA 20 (parts)( Uncle Rusty)
F/H Disc Harrow for cub L-38
C-22 Sickle Bar Mower
IH C2 and C3 mower
Universal tool attachment with disc hillers..Rear cultivators (various tips
York Rake for Cub home made
Single bottom Plow for Cub F194
Gravely 5660 12 hp/ w snoblower.rototiller,bush hog
Circle of Safety: Y

Re: Cub only runs on cyl 1 and 2

Postby pickerandsinger » Fri Mar 22, 2013 5:36 pm

Clean or replace your plugs, and check the spark plug wires....Check and make sure the # 1 cylinder is at TDC....Where the rotor points will be # 1 cylinder on the dist cap....Then install the wires in the correct firing order...Best I can come up with...(4 strokes of and Internal combustion engine....Intake, Compression, Power, and Exhaust....Redneck version.....Suck, Squeeze, Pop, and Phooey).....posting.php?mode=reply&f=1&t=77295# Dave
In Memory of 58,286


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