Jump to content

Nominations for Tractor of the Month
Garden Tractors and Parts on eBay



Photo
- - - - -

Sears DLT Issues


  • Please log in to reply
26 replies to this topic

#1 KennyP ONLINE  

KennyP

    FORDoholic

  • Super Moderator
  • Staff
  • -GTt Supporter-
  • Contributor
  • Member No: 2253
  • 28,405 Thanks
  • 39,661 posts
  • Location: Collinsville, Oklahoma

Posted May 21, 2016 - 12:25 PM

I have a Sears DLT mower with the 25 HP Intek in it. Have an issue with it spitting and sputtering with the PTO engaged. Black smoke just rolls. Turn the PTO off, and it will smooth back out again. I have checked everything I can according to the manual. It has new plugs and the valves have been adjusted. New oil change, air filter. I pulled the flywheel this morning to check the key there and all is good. Ran a diode test and they check okay. Cleaned the inside of the flywheel and it charges better now. Also, if you let it set overnight, takes a squirt of carb cleaner to get it to fire. I have an electric fuel pump on it and that didn't help with any of the issues. I'm thinking the coil pacs are getting weak, missing under load. Any other ideas?

DSCN1762.JPG     DSCN1763.JPG

 

Here's the plugs. Only an hour or so run time on them.

DSCN1764.JPG     DSCN1765.JPG

 

This was inside the flywheel.

DSCN1766.JPG


  • boyscout862 said thank you

#2 boyscout862 ONLINE  

boyscout862
  • Senior Member
  • Member No: 8923
  • 9,763 Thanks
  • 7,531 posts
  • Location: N.E. Connecticut

Posted May 21, 2016 - 12:31 PM

Aren't those engines notorius for camshaft problems? Measure the low point and high points of the valves to see if there is adequate lift. Good Luck, Rick
  • KennyP said thank you

#3 Tecumseh power ONLINE  

Tecumseh power

    Jack of all trades, master of none.

  • Senior Member
  • Member No: 77571
  • 941 Thanks
  • 766 posts
  • Location: Vintondale pa

Posted May 21, 2016 - 02:40 PM

Did you clean the carb Kenny. Lots of mine that I have that ran funny under load had dirty jets
  • KennyP and boyscout862 have said thanks

#4 KennyP ONLINE  

KennyP

    FORDoholic

  • Super Moderator
  • Staff
  • -GTt Supporter-
  • Contributor
  • Member No: 2253
  • 28,405 Thanks
  • 39,661 posts
  • Location: Collinsville, Oklahoma

Posted May 21, 2016 - 02:49 PM

Did you clean the carb Kenny. Lots of mine that I have that ran funny under load had dirty jets

Haven't done that as yet. But I did pull the bowl off and it was clean.


  • boyscout862 said thank you

#5 crittersf1 OFFLINE  

crittersf1

    GT Lunatic

  • Senior Member
  • Member No: 26142
  • 4,167 Thanks
  • 5,759 posts
  • Location: Newport, N.C.

Posted May 21, 2016 - 04:11 PM

Sounds like low secondary ignition voltage


  • KennyP said thank you

#6 crittersf1 OFFLINE  

crittersf1

    GT Lunatic

  • Senior Member
  • Member No: 26142
  • 4,167 Thanks
  • 5,759 posts
  • Location: Newport, N.C.

Posted May 21, 2016 - 04:21 PM

Coil packs getting proper voltage?


  • KennyP said thank you

#7 MH81 ONLINE  

MH81

    Proud to be Deplorable

  • Staff Admin
  • Staff
  • -GTt Supporter-
  • Contributor
  • Member No: 802
  • 27,266 Thanks
  • 28,606 posts
  • Location: N. W. PA

Posted May 21, 2016 - 04:35 PM

I'm sure you're on the right track, but one thing to keep in mind... Mine would do weird "under load" stuff and it ended up being a partial clogged fuel filter.

Shouldn't have acted the way it did, but that's what fixed it.
  • KennyP said thank you

#8 bbuckler OFFLINE  

bbuckler
  • Senior Member
  • Member No: 59269
  • 2,082 Thanks
  • 1,889 posts
  • Location: Killeen,Tx

Posted May 21, 2016 - 04:40 PM

I got the same mower with the governor shot.


  • KennyP said thank you

#9 KennyP ONLINE  

KennyP

    FORDoholic

  • Super Moderator
  • Staff
  • -GTt Supporter-
  • Contributor
  • Member No: 2253
  • 28,405 Thanks
  • 39,661 posts
  • Location: Collinsville, Oklahoma

Posted May 21, 2016 - 04:54 PM

I have ruled out a carb problem as it will run great until a load gets on it. Then it floods and black smoke rolls. Kick the load off and it smooths right up. Might be a governor, but I'm leaning toward the coil pacs. Weak spark will do the same. And this will not start with full throttle and choke after sitting overnight. Needs some carb cleaner spray and fires right off.



#10 EricFromPa ONLINE  

EricFromPa

    Tractorholic

  • Senior Member
  • Contributor
  • Member No: 2135
  • 2,293 Thanks
  • 2,329 posts
  • Location: Bedford County Pa.

Posted May 21, 2016 - 04:55 PM

Those were known for the rings wearing out rather fast because of the Seal on the air cleaner not sealing.Plastic intake boot? Warps and the gasket gets hard from the heat.

 

I do see quite a bit of dirt sticking on the inside of your intake.That can't be good for it.

 

I would pull the carb off and take it apart and spray it out really good with carb cleaner and see if that helps any.

 

Here's a really good link to what needs taken apart and what needs cleaned in a 2 barrel Nikki carb.

http://outdoorpoweri...-twin_carb2.asp

 

Don't forget the Main jet is in the bowl and the fuel solenoid shuts fuel off by directly closing off the main jet.So if the solenoid is dirty or sticking slightly then it will not open up the whole way and cause it to run lean.

 

$5 can of carb cleaner is cheaper than a $80 coil set.


Edited by EricFromPa, May 21, 2016 - 04:57 PM.

  • KennyP said thank you

#11 KennyP ONLINE  

KennyP

    FORDoholic

  • Super Moderator
  • Staff
  • -GTt Supporter-
  • Contributor
  • Member No: 2253
  • 28,405 Thanks
  • 39,661 posts
  • Location: Collinsville, Oklahoma

Posted May 21, 2016 - 05:02 PM

Coil set is on order! Be here next week. I'll have to take the intake off to get the carb off as it sits inside it.


  • MH81 said thank you

#12 KennyP ONLINE  

KennyP

    FORDoholic

  • Super Moderator
  • Staff
  • -GTt Supporter-
  • Contributor
  • Member No: 2253
  • 28,405 Thanks
  • 39,661 posts
  • Location: Collinsville, Oklahoma

Posted May 25, 2016 - 03:08 PM

Got the coil set and swapped them out. Old ones had lamination's coming apart. Fired up with a little choke and did fine. Turned the PTO on and gave it some RPM's. Did well, no smoke nor miss. Then I heard a funny noise and all it has now it full (+) throttle. Tried adjusting the governor to no avail. Either wide (+) open or just an idle. Think the governor gave it up!



#13 bbuckler OFFLINE  

bbuckler
  • Senior Member
  • Member No: 59269
  • 2,082 Thanks
  • 1,889 posts
  • Location: Killeen,Tx

Posted May 25, 2016 - 08:20 PM

Got the coil set and swapped them out. Old ones had lamination's coming apart. Fired up with a little choke and did fine. Turned the PTO on and gave it some RPM's. Did well, no smoke nor miss. Then I heard a funny noise and all it has now it full (+) throttle. Tried adjusting the governor to no avail. Either wide (+) open or just an idle. Think the governor gave it up!

Common problem I have had two in a row like that. Have you seen the inside of the carb ? there is a lot of plastic. 



#14 KennyP ONLINE  

KennyP

    FORDoholic

  • Super Moderator
  • Staff
  • -GTt Supporter-
  • Contributor
  • Member No: 2253
  • 28,405 Thanks
  • 39,661 posts
  • Location: Collinsville, Oklahoma

Posted May 26, 2016 - 05:32 AM

I pulled the carb apart and squirted carb cleaner through it everywhere. It was running great for a couple minutes. Hope my hand heals up soon so I can pull the engine and change the governor out.



#15 KennyP ONLINE  

KennyP

    FORDoholic

  • Super Moderator
  • Staff
  • -GTt Supporter-
  • Contributor
  • Member No: 2253
  • 28,405 Thanks
  • 39,661 posts
  • Location: Collinsville, Oklahoma

Posted May 26, 2016 - 06:42 AM

Just ordered the governor. May be the first of the week before I get it. I'm trying to get this running good to take to my son in Wichita as he needs a decent mower. I'll get Steve to help with getting the engine off and on a table to tear it apart.






Top