17HP Briggs Intek 311777-0133

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  #1  
Old 10-06-08, 04:15 PM
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17HP Briggs Intek 311777-0133

Blows white smoke under load especially when going across a hill with the left on the down side. Smoke stops when load removed. I think it could be the head gasket. Mower has done 600+ hours,
 
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Old 10-06-08, 06:22 PM
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Blown head gasket is a real possibility, also check and make sure oil level is right and not overfull.
 
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Old 10-06-08, 06:41 PM
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Your problem could be as simple as too much oil or a more serious problem such as cylinder wear or blown head gasket. There are two tests than should confirm the cause.
The first is a vacuum test using simple water manometer and the other is a leakdown test.

You can purchase a leakdown tester or make your own. Here are links that explain both.

http://www.perr.com/tip3.html

http://en.wikipedia.org/wiki/Leak-down_tester

http://vmaxoutlaw.com/tech/leakdown_tester.htm

http://www.compgoparts.com/Technical...akdownTest.asp
 
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