Stalls in third gear

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Agage1
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Stalls in third gear

Postby Agage1 » Mon Jan 16, 2017 9:20 pm

Been working the kinks out on this 154 for the past few weeks. The tractor runs good in first and second gear but not so well in third. If I drop the clutch in third it will stall right out. If I ease the clutch out I can keep it running but if I'm going up any kind of alight incline I have to ride the clutch to keep it from stalling. I keep thinking it's a timing issue. My timing light is broken so I've just been making small adjustments rotating the distributor but haven't found a sweet spot yet. When I static time it it will start just won't run in third gear. When I try to rotate the distributor just a little to advance or retard timing I can't get the thing to fire. It's got new points and condenser and I've rechecked the gap. Could it be the carb? I swapped the broken international carb for a zenith off a 184. Im getting short on ideas. It runs great in second gear but I sure would like to try it third.

Larry B
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Re: Stalls in third gear

Postby Larry B » Mon Jan 16, 2017 9:57 pm

You will never be able to drop the clutch in 3rd gear. You have to slip the clutch some. You have to remember on its best day the tractor had the equivalent of about 3 and a half Briggs 5HP engines. After 40 years probably a little less. Some things to check.
Is the distributor mechanical advance working? Take off the dist cap and twist the rotor. Does it turn slightly then spring back?
With the engine running at idle if you slightly turn the distributor does the engine speed up or slow down? You really need a timing light.
Have you done a compression test?
Do you have a tach? Is the the engine running at proper RPM at wide open throttle?
Is the engine properly warmed up? Engine won't have full pwer till at proper temp.

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Rick Spivey
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Re: Stalls in third gear

Postby Rick Spivey » Tue Jan 17, 2017 6:08 am

Is it magneto or battery ignition? I've had a weak coil on a magneto give the same symptoms.
Rick Spivey
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outdoors4evr
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Re: Stalls in third gear

Postby outdoors4evr » Tue Jan 17, 2017 7:31 am

Here are a couple things to try:
Sounds like the governor is not responding to the changing load. Lubricate the connections between the governor and the carb.

Does the engine stumble when you suddenly add a load like engaging a mower deck? If it does stumble, might be timing or carb adjustment issue.

How does the transition from idle to wide open do? Do you have to do this transition slowly or does the engine respond quickly to your throttle position change? If it tries to die during this transition, then I would look closer at the carb setting.
184 w/ Creeper & 3-Point
IH 3160a Mower
IH Model 15 Tiller

Agage1
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Re: Stalls in third gear

Postby Agage1 » Tue Jan 17, 2017 7:30 pm

Throttle response is fine. It is the coil that came with the tractor so not sure. Thought about the governor which could be a possibility. Just not that familiar with the cub governor set up yet.

Agage1
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Tractors Owned: Wheel Horses
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Re: Stalls in third gear

Postby Agage1 » Tue Jan 17, 2017 7:32 pm

The throttle response is fine in first and second gear. It stumbles in third and unless I really ride the clutch it will stall. It will run in third wide open throttle down hill but if I come to even the slightest incline even at full speed it will start to bog down and stall

outdoors4evr
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Re: Stalls in third gear

Postby outdoors4evr » Wed Jan 18, 2017 8:47 am

Sounds like you are down to the governor.
Check the governor to carburetor rockshaft for play. If it has play in the woodruff key area, clean and apply JB Weld.
http://www.farmallcub.com/phpBB2/viewtopic.php?f=1&t=64634&p=527250&hilit=governor+glue#p527250

Otherwise, you may have a worn out governor spring or need some other attention with the governor. Here is a link to a governor rebuild how-to.
http://www.farmallcub.com/phpBB2/viewtopic.php?f=141&t=44139
184 w/ Creeper & 3-Point
IH 3160a Mower
IH Model 15 Tiller

tbear
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Re: Stalls in third gear

Postby tbear » Fri Jan 20, 2017 3:55 pm

Just throw some new plugs in it. I've had the same problem. New plugs-no problem.

Eugene
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Re: Stalls in third gear

Postby Eugene » Fri Jan 20, 2017 6:23 pm

Larry B wrote:Have you done a compression test?
I have an excuse. CRS.

SONNY
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Re: Stalls in third gear

Postby SONNY » Fri Jan 20, 2017 9:20 pm

Mine stumbles in third take off,---but then I never use third so it's no problem, UNLESS your trying to make a rat rod and do burnouts with it.----Both my 185's are slow taking off in third too. thanks; sonny
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Frankiedd
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Re: Stalls in third gear

Postby Frankiedd » Mon Jan 23, 2017 11:02 am

Check the engine cylinder compression. If they are low that would equal low power. I had that same problem on one that I owned.

Mortgaged
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Re: Stalls in third gear

Postby Mortgaged » Fri Jan 27, 2017 1:21 pm

I had an identical issue with my 184 when I first bought it. After chasing lots of other things: timing, plugs, carb, etc. I finally got out the manual and followed the directions to set the governor. I found it was out quite a bit and required some definite adjustment 3/4 turn? to get it right.

Afterwards, I quickly learned that what I thought was running fine in 1st and 2nd wasn't very good after all. The governor adjustments made the tractor run MUCH better overall and I didn't even realize what was going on in the lower gears.

Regardless, as mentioned previously, you can never drop the clutch in 3rd and expect it to go. Generous Slipping is the norm here, especially when starting on an incline. It should however transition to full power when transitioning into an incline. My tractor produces enough power to slip the clutch on steep inclines if I transition into them, which pretty much forces me to downshift.

Let us know what you find!


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