|
PLEASE PATRONIZE OUR SPONSORS!
|
|||||||
 |
|
|
Thread Tools | Display Modes |
|
|
|
#1
08-27-2021, 06:56 PM
|
|||
|
|||
Cub Cadet 108. Kohler engine, sputters & quits when warm, will restart .
I'm at my wits end with this tractor. Ran fine up until about 2 weeks ago and then all of a sudden started acting up. Will run fine until it gets warm (about 20minutes or so) and the sputters, backfires, & quits. It will restart almost immediately and run for a few more minutes (about 5 or 10). It seems like the longer you let it set the longer it will run longer, based on the time you wait before restarting. First I replaced points, coil, & condenser. Points set at .020. Carburetor replacement was next. The plug seems to be really black, so I'm presuming it's not fuel. I'm obviously missing something here. HELP !!!! I forgot to mention, I also removed fuel tank and cleaned it out.
|
|
#2
08-27-2021, 07:06 PM
|
|||
|
|||
First, welcome to OCC...........
 Sounds like something getting hot and changing. First thing that comes to my mind is perhaps the Valves, especially the "exhaust" valve. You might want to check that before shot gunning the engine with anymore parts. 
__________________
[B]Roland Bedell[/B] CC Models: 100, 105, 1450, 782, (2) 784, & 2072 [SIZE="4"][B][COLOR="Red"]Buy:[/COLOR][COLOR="Blue"] Made in the USA[/COLOR][/B] [/SIZE]:American Flag 1:
|
|
#3
08-27-2021, 07:22 PM
|
|||
|
|||
|
Are you referring to adjustment ? Or maybe burned ? Compression ? Also it seems like the engine has developed a little vibration (forgot to mention that). I just also noticed there seems to be some oil residue where the cylinder head meets the block.
|
|
#4
08-27-2021, 07:53 PM
|
||||
|
||||
|
The oil residue at the head normally indicates a blown head gasket or loose head bolts.
Remove the blower cover and check for grass build up in the cooling fins. Then as R Bedell said, check valves. Make sure it's making full travel, not staying open.
__________________
128 X 2, 129, 149, 1250, 1450 x 2
|
|
#8
08-28-2021, 07:55 PM
|
|||
|
|||
|
Well Folks, I checked the compression today and it was 90 lbs. cold. I may do a hot compression test tomorrow. I also noticed when it it was cranking there was a lot suction at the exhaust pipe when the intake stroke was happening. Couldn't tell if any blow by on the compression stroke. I have a "whistler" that I am going to try to determine if any is present on the compression stroke. Also with that kind of compression it's hard to believe there is an exhaust valve issue, but I realize the engine was cold and the problem doesn't start until the engine is hot. I'll keep you posted as I progress. Thanks to all that have made suggestions.
|
|
#9
08-28-2021, 08:26 PM
|
|||
|
|||
|
Add a dose of Marvel Mystery Oil to the gas and some to the crank case.
That just may help. Or remove the valves, inspect and reface and clean the stems as needed. You can check for proper ACR adjustment then as well.
|
|
|
|
Cub Cadet is a premium line of outdoor power equipment, established in 1961 as part of International Harvester. During the 1960s, IH initiated an entirely new line of lawn and garden equipment aimed at the owners rural homes with large yards and private gardens. There were a wide variety of Cub Cadet branded and after-market attachments available; including mowers, blades, snow blowers, front loaders, plows, carts, etc. Cub Cadet advertising at that time harped on their thorough testing by "boys - acknowledged by many as the world's worst destructive force!". Cub Cadets became known for their dependability and rugged construction.
MTD Products, Inc. of Cleveland, Ohio purchased the Cub Cadet brand from International Harvester in 1981. Cub Cadet was held as a wholly owned subsidiary for many years following this acquisition, which allowed them to operate independently. Recently, MTD has taken a more aggressive role and integrated Cub Cadet into its other lines of power equipment.
This website and forum are not affiliated with or sponsored by MTD Products Inc, which owns the CUB CADET trademarks. It is not an official MTD Products Inc, website, and MTD Products Inc, is not responsible for any of its content. The official MTD Products Inc, website can be found at: http://www.mtdproducts.com. The information and opinions expressed on this website are the responsibility of the website's owner and/or it's members, and do not represent the opinions of MTD Products Inc. IH, INTERNATIONAL HARVESTER are registered trademark of CNH America LLC
All material, images, and graphics from this site are the property of www.onlycubcadets.net. Any unauthorized use, reproductions, or duplications are prohibited unless solely expressed in writing.
Cub Cadet, Cub, Cadet, IH, MTD, Parts, Tractors, Tractor, International Harvester, Lawn, Garden, Lawn Mower, Kohler, garden tractor equipment, lawn garden tractors, antique garden tractors, garden tractor, PTO, parts, online, Original, 70, 71, 72, 73, 76, SO76, 80, 81, 86, 100, 102, 104, 105, 106, 107, 108,109, 122, 123, 124, 125, 126, 127, 128, 129, 147, 149, 169, 182, 282, 382, 482, 580, 582, 582 Special, 680, 682, 782, 782D, 784, 800, 805, 882, 982, 984, 986, 1000, 1015, 1100, 1105, 1110, 1200, 1250, 1282, 1450, 1512, 1604, 1605, 1606, 1610, 1615, 1620, 1650, 1710, 1711, 1712, 1806, 1810, 1811, 1812, 1912, 1914.
Hybrid Mode
