Oil or carb problem


  #1  
Old 11-30-15, 02:02 PM
Geochurchi's Avatar
Member
Thread Starter
Join Date: Nov 2012
Posts: 5,056
Received 159 Upvotes on 145 Posts
Oil or carb problem

Hi All, 13 HP Techumseh engine in a Wheel Horse tractor,won't run how can I tell if it is carb problem or oil consumption,smokes really bad runs extremely rough,then dies.
Geo
 
  #2  
Old 11-30-15, 02:31 PM
A
Member
Join Date: Jan 2013
Location: U.S.A.
Posts: 1,902
Received 73 Upvotes on 66 Posts
Blue smoke would point toward oil consumption and black toward fuel problem. I've seen some mowers, etc. running pretty darned good while leaving a pretty heavy cloud of blue smoke, not saying that makes it a good thing, but would cause me to suspect that you have a fuel problem. And if it's an excess fuel problem, which can wash down the cylinder walls with gas, oil consumption could be a symptom rather than a cause.
 
  #3  
Old 11-30-15, 03:13 PM
BFHFixit's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Jun 2007
Location: USA.
Posts: 1,511
Upvotes: 0
Received 0 Upvotes on 0 Posts
I would tend to agree with pedro, what color smoke?
Might also be a head gasket....what tecumseh engine?
 
  #4  
Old 11-30-15, 03:54 PM
J
Member
Join Date: Jan 2011
Location: USA
Posts: 4,463
Received 128 Upvotes on 113 Posts
One simple check is to remove the bowl on the carb. and lift up on the float to see if the fuel shuts completely off.
 
  #5  
Old 11-30-15, 04:32 PM
31YTech's Avatar
Member
Join Date: Feb 2008
Location: EveryWhere
Posts: 1,093
Upvotes: 0
Received 0 Upvotes on 0 Posts
Hello Mr Geo,

First thing to check is the engine oil level to see if it's over full and smells like fuel, if the carb float needle valve sticks open fuel can enter the crankcase through the rings. That will cause excessive smoking and bad run issues, If you find this, a carb rebuild and oil change will be in order.

Replace the fuel filter and spark plug as well and you may need to blow the excess fuel and oil mix from the cylinder, when this is done and the engine is cranked up, it will continue to smoke until the excess oil/fuel mix is burned out of the muffler.

Good Luck
 
  #6  
Old 11-30-15, 06:50 PM
Geochurchi's Avatar
Member
Thread Starter
Join Date: Nov 2012
Posts: 5,056
Received 159 Upvotes on 145 Posts
I had that problem before and I install a manual gas shut off which I close after each use,filter and plug are both new,I guess I will pull the carb and see what it looks like.
Smoke color is kind of light blue.
Geo
 
  #7  
Old 12-01-15, 07:04 AM
M
Member
Join Date: May 2006
Location: Iowa!!!!!
Posts: 3,841
Received 34 Upvotes on 33 Posts
If you get into carb problems you can get a Chinese carb for that engine pretty reasonable. I just put one on an H70 and they work work fine. Ran about twenty bucks with no freight.

If you're wanting to keep it OE, though, a replacement would be out of sight.
 
  #8  
Old 12-01-15, 02:21 PM
Geochurchi's Avatar
Member
Thread Starter
Join Date: Nov 2012
Posts: 5,056
Received 159 Upvotes on 145 Posts
Definetly a carb issue ,crankcase was full of gas,the weird part of it is the gas was shut off at the valve until I started it,gas tank full of gas ,it started and ran like Crap for about 15 min.in that amount of time the quite a bit of gas went into the crankcase.
I think I will rebuild the carb,it's a Walboro LMT,ever done one before?
Geo
 
  #9  
Old 12-01-15, 03:31 PM
M
Member
Join Date: May 2006
Location: Iowa!!!!!
Posts: 3,841
Received 34 Upvotes on 33 Posts
I would look at a fix on the float valve which wouldn't take too much and if that fixes it you have a cheap deal. A float/valve/seat would likely cover it and it's not too involved doing it.
 
  #10  
Old 12-01-15, 06:00 PM
Geochurchi's Avatar
Member
Thread Starter
Join Date: Nov 2012
Posts: 5,056
Received 159 Upvotes on 145 Posts
That's what I thought, I was thinking of pulling the needle valve out and spraying carb cleaner in there and anywhere else there is an office, although it was running fine previously, it must be a float/needle valve problem for all that gas to be sucked through.
Geo
 
  #11  
Old 12-02-15, 07:30 AM
O
Member
Join Date: Dec 2006
Location: Canada
Posts: 631
Upvotes: 0
Received 11 Upvotes on 10 Posts
  #12  
Old 12-02-15, 12:07 PM
Geochurchi's Avatar
Member
Thread Starter
Join Date: Nov 2012
Posts: 5,056
Received 159 Upvotes on 145 Posts
Thanks, I had that one also some good stuff on Utube.
 
  #13  
Old 12-02-15, 12:46 PM
V
Member
Join Date: Jan 2010
Location: North East Kingdom of Vermont
Posts: 2,195
Upvotes: 0
Received 3 Upvotes on 3 Posts
I once had a Tecumseh 10 HP engine where over half of the tank of Gasoline drained down into the crankcase through the fuel bowl, and then the Oil from the crankcase, being lighter, made its way up and over into the fuel tank . . . . where my Wife noticed the murky rainbow on the surface as she checked it before use.

Several mechanics have told me that this situation is fairly common with gravity feed Tecumsehs . . . . and not unheard of with other brands.

It's usually just a sticky needle (stuck open).
 
  #14  
Old 12-02-15, 04:05 PM
BFHFixit's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Jun 2007
Location: USA.
Posts: 1,511
Upvotes: 0
Received 0 Upvotes on 0 Posts
Tecumseh's retained a brass float for some time and the would leak, hard to find, unless you remove the float (if brass) and shake it next to your ear, if you hear sloshing replace the float. They also used a rubber seat and solid needle valve which, if the seat is worn or installed incorrectly will leak by.
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description: