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White smoke


 
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G harper
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Joined: 08 Nov 2012
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PostPosted: Thu Nov 08, 2012 12:31 pm    Post subject: White smoke Reply to specific post Reply with quote

I have a ford 640 tractor.It has white smoke pouring from exhaust almost immediately after cranking.I ran it in an extremely dusty environment for a couple hours without air filter at carb intake before it started smoking.It also runs near 210 degrees under load.Have I likely damaged engine from dust through the intake?Or could the white smoke be from a cracked head or head gasket?Smoke doesn't seam too be from moisture and oil stick does'nt show water on it.What shoul i check to see if dust has damaged engine?
 
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sixbales
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PostPosted: Thu Nov 08, 2012 1:16 pm    Post subject: Re: White smoke Reply to specific post Reply with quote

White smoke is usually due to coolant being burned in a cylinder. Cracked head or head gasket leak. Have a look at the spark plugs and see if one is shiny clean.

We call it "dusting" an engine, when you run one without an air filter. Usually that ruins them in a short time.

Is this high temperature something new?? Or has it been going on for some time??
 
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Michaels Dad
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Location: Utopia / Pasadena, Texas

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PostPosted: Thu Nov 08, 2012 3:27 pm    Post subject: Re: White smoke Reply to specific post Reply with quote

210, wow that's hot.
My 640 just barely hits 160 when pulling a 7' box blade full of caliche.
 
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souNdguy
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PostPosted: Thu Nov 08, 2012 3:51 pm    Post subject: Re: White smoke Reply to specific post Reply with quote

sanding the carb and cyl bores from no air filter merely hurt the engine compression and silica level... ( minorly )...

white smoke at startup and overheat.. I'd be looking at a head gasket first. checking oil for water.. and water for oil.

if you find water in the oil.. don't run her.. coolant will wipe mains fast.

go from there based on what you find.

there are a variety of tests you can do.. including wet / dry compressiuon.. leakdown tests, pressurized cooling sys test.. and if need be.. pan drop and pressurized cooling system looking for drips.

also read plugs. if one is steam cleaned.. you know you have water in the combustion chamber on that lung..
 
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sixbales
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PostPosted: Thu Nov 08, 2012 4:09 pm    Post subject: Re: White smoke Reply to specific post Reply with quote

You could be leaking exhaust gas into the cooling system, which would cause high temperature relatively quickly. Look for bubbles in the coolant in top of radiator.

I would fix the head problem first and then check compression. The engine may still run. Oil consumption will likely increase.
 
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G harper
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PostPosted: Thu Nov 08, 2012 8:56 pm    Post subject: Re: White smoke Reply to specific post Reply with quote

Thanks for your reply.High temperature been going on a long time.Ran hot several years ago.Cracked the head.When I replaced the head it ran fine but
compression test revealed 1 cylinder way lower on pressure than the other 3.I son't know but temp
stays near 210 maybe more on hot days when using a two row breaking plow.Also use a 48 inch sovema tiller on it.I may have some bubbles in the radiator though.
 
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G harper
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PostPosted: Thu Nov 08, 2012 8:58 pm    Post subject: Re: White smoke Reply to specific post Reply with quote

Thanx soundguy
 
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souNdguy
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PostPosted: Fri Nov 09, 2012 3:27 pm    Post subject: Re: White smoke Reply to specific post Reply with quote

keep us posted
 
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