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New rebuild- carb or ignition problem
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- 10+ Years
- Posts: 8
- Joined: Fri Jan 17, 2014 4:46 am
- Zip Code: 62049
New rebuild- carb or ignition problem
Just rebuilt my 1957 international cub lo boy from the ground up. New everything , including a 6v to 12v conversion from Steiner. New mini alternator, internal resisted coil. Rebuilt stock carb. Tractor starts fine. There is a bad misfire in engine. Misfires badly at higher rpm , but can tell it through all rpm. Noticed ignition coil gets VERY hot in a short time? Charging system seems to be working fine. 12+ volts at lo rpm, 13-14 volts at higher rpm. If you try to throttle up quickly the engine dies. Been back through most everything and running out of thoughts.
- Don McCombs
- Team Cub Mentor
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- Zip Code: 21550
- Tractors Owned: "1950 Something" Farmall Cub
1957 Farmall Cub w/FH
1977 International Cub w/FH
1978 International Cub
1948 Farmall Super A - Circle of Safety: Y
- Location: MD, Deep Creek Lake
Re: New rebuild- carb or ignition problem
The coil getting hot quickly is an indicator that it may be breaking down. Is the coil new or old? Was any engine work done as a part of the rebuild?
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- 10+ Years
- Posts: 8
- Joined: Fri Jan 17, 2014 4:46 am
- Zip Code: 62049
Re: New rebuild- carb or ignition problem
Yes,Engine rebuild: bored .30 over, new pistons, valves , valve guides, and bearings. All new points, condenser, cap, wires, plugs. Engine sounds solid. New coil, alternator , amp meter.
- Boss Hog
- Cub Pro
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Re: New rebuild- carb or ignition problem
How do you have it wired? Coil may be wired wrong. [ backwards] and how is the Alt. wired?
Boss
Boss
IN GOD WE TRUST
All others pay cash
Boss Hog
Power corrupts; absolute power corrupts absolutely byJohn Emerich Edward Dalberg
All others pay cash
Boss Hog
Power corrupts; absolute power corrupts absolutely byJohn Emerich Edward Dalberg
- Boss Hog
- Cub Pro
- Posts: 10290
- Joined: Mon Oct 24, 2005 8:35 pm
- Zip Code: 23962
- eBay ID: dmb2613
- Circle of Safety: Y
- Location: VA. Randolph
Re: New rebuild- carb or ignition problem
You may have it wired so the Alt is putting its charge to the coil, that will cook a coil quick
IN GOD WE TRUST
All others pay cash
Boss Hog
Power corrupts; absolute power corrupts absolutely byJohn Emerich Edward Dalberg
All others pay cash
Boss Hog
Power corrupts; absolute power corrupts absolutely byJohn Emerich Edward Dalberg
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- 10+ Years
- Posts: 8
- Joined: Fri Jan 17, 2014 4:46 am
- Zip Code: 62049
Re: New rebuild- carb or ignition problem
It's wired per the diagram that was sent with alternator.( not to say its correct, you never know?)
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- Team Cub Mentor
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Re: New rebuild- carb or ignition problem
Two plug wires on wrong spark plugs.
Timing light. Test each plug wire to see if the fault is in the spark/ignition.
Timing light. Test each plug wire to see if the fault is in the spark/ignition.
I have an excuse. CRS.
- randallc
- Cub Pro
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- Tractors Owned: 1951 Farmall Cub, 152 disk plow, 2 gang disk, belly mower, sickle mower
1949 Farmall Cub, cultivator, moldboard plow, disk,front blade. Cub Cadet, LTX1045 Mower. Cub Cadet's 109, 125, 1000, and 1250
1961 cub c2 belly mower and full blade. 48 cub manual lift with cultivators.
1947 Cub - Circle of Safety: Y
- Location: Huntington, AR
Re: New rebuild- carb or ignition problem
Bad coil, even some of the new ones are bad. Change it out and try it.
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- 10+ Years
- Posts: 8
- Joined: Fri Jan 17, 2014 4:46 am
- Zip Code: 62049
Re: New rebuild- carb or ignition problem
Will do. I will order another one today. Is there a better coil on the market than the Steiner product?
- Don McCombs
- Team Cub Mentor
- Posts: 17442
- Joined: Mon Feb 03, 2003 6:45 am
- Zip Code: 21550
- Tractors Owned: "1950 Something" Farmall Cub
1957 Farmall Cub w/FH
1977 International Cub w/FH
1978 International Cub
1948 Farmall Super A - Circle of Safety: Y
- Location: MD, Deep Creek Lake
Re: New rebuild- carb or ignition problem
NAPA part number for 12V IR coil is IC14SB.
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- 10+ Years
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- Joined: Fri Jan 31, 2014 7:52 pm
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Re: New rebuild- carb or ignition problem
for the coil getting hot, check your wiring at your ignition switch on the dash, I had got the wires switched around, and my coil would get hotter than hell just sitting there. sounds like your timing is off, a little.
Read in the manual and it will give you step by step instructions on setting the timing, make sure when setting the timing you are on TDC on #1. pull the spark plug out to make sure!! the TDC mark, marks #1 and #3 TDC
but thinking about it, sounds like your distributor gear is off by a tooth or so. pull the distributor off and realign, it took me a few tries the first time but then when everything is aligned it all falls together PERFECTLY... hope this helps
-Craig
Read in the manual and it will give you step by step instructions on setting the timing, make sure when setting the timing you are on TDC on #1. pull the spark plug out to make sure!! the TDC mark, marks #1 and #3 TDC
but thinking about it, sounds like your distributor gear is off by a tooth or so. pull the distributor off and realign, it took me a few tries the first time but then when everything is aligned it all falls together PERFECTLY... hope this helps
-Craig
- RaymondDurban
- Cub Pro
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Re: New rebuild- carb or ignition problem
The TDC mark on the pulley identifies #1 and #4 cylinders at TDC.
Screwstick #3934
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- 10+ Years
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- Location: MO, Potosi
Re: New rebuild- carb or ignition problem
Is this on a regular distributor kill switch (two wiring terminals, pull knob out to run, push in to kill) that this happened?CraigKennedy wrote:for the coil getting hot, check your wiring at your ignition switch on the dash, I had got the wires switched around, and my coil would get hotter than hell just sitting there. ..........
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- 10+ Years
- Posts: 8
- Joined: Fri Jan 17, 2014 4:46 am
- Zip Code: 62049
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- 10+ Years
- Posts: 140
- Joined: Fri Jan 31, 2014 7:52 pm
- Zip Code: 28430
Re: New rebuild- carb or ignition problem
RaymondDurban wrote:The TDC mark on the pulley identifies #1 and #4 cylinders at TDC.
*#1 and #4
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