Exhaust Leak

[G6 at Snook, TX]

What type of effect does an exhaust leak at the muffler/manifold have on the tractor? Does it make the tractor run rich or lean? Can it cause it to put/put?

This is a frontmount 6v that has new points and plugs, does not lose power, but does not run smoothly either as it did last year before the old points wore out.

 

[souNdguy]

effect of an exhaust leak atr the manifold to muffler??

causes soot to build up on the outside of the joint and the block.. might be a lil loud.

since the rich / lean issue is a carb / manifold vacume issue.. the post manifold / post combustion leak has nothing to do with the carb setings or running..

soundguy

 

[NOXJohn]

A exhaust leak between the manifold and the block can result in the block getting eroded at that point. This happens a lot at #4 cylinder. Other then erosion and being loud I can't think there are any other problems.

 

[OK8N]

May want to try Bruce's tip #8.

... Putting some tin foil under the clamp helps reduce exhaust leaks and coating the bolts/nuts on the clamp with a never-seize compound will allow you to replace the tin foil without buying a new clamp.

http://www.ytmag.com/articles/artint268.htm

 

[Goodey]

When I restored my 48 8N, my tractor wasn't sounding right or running right, and when ever I tried to fix the problem (new points, carb adjustment, etc) the rough-running and horrible sound was still there. We finally were checking the compression of the cylinders when we herd a leak in the exhaust, We cut the manifold in half and found a inch long hole between the intake and exhaust! we replaced the manifold and now it runs like new!!

Best of luck!

 

[G6 at Snook, TX]

I was fooling around it today. Changed oil. Tested the spark at each plug (blue/white) and let the carb. out a bit to 1 1/3 turns from seated. I put it under load and ran the snot out of it today, but it ran fine under load, did not ping except when idling, and sounded just fine. I put about six gallons of fresh gas in her with the helping hand of seafoam and put it up for another week or two. (No rain; no mow.) Best I can figure is that the old gas was getting a bit old, and the carb was too lean. As an aside, that tractor runs leaner than my other two sidemounts and six volts. I expect them all to be about 1 2/3 turns out on the main adjustment, but that just might not be the case. I have come to find that these old machines each have a different personality and sound to them and their own idiosyncrasies. About like the difference between the diesel engine and a steam engine. The old steam engines were all a bit unique.

Thanks for the replies. I doubted the exhaust had anything to do with it, but I thought I would ask anyhow.