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John Deere Tractors Discussion Forum
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301 john deere WHITE SMOKE

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bdr2431

02-17-2008 13:35:18




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I was wondering if any one could help me identify my problem. John deere 301 diesel, missing and blowing white smoke. I thought it was starving for fuel but that is not the case. Had trash in tank. Cleaned it.. Blew out all fuel lines. No help. Replaced pick up pump. No help. Replace injector pump. No help. Checked temp on cylinders at exhaust. Temp after running 5 minutes. #1=185 DEGREES #2=275 DEGREES #3= 410 DEGREES. Replaced injectors in #1 and #2 cylinders. No Change. Any ideas would greatly be appreciated.

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bdr2431

02-17-2008 20:27:33




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 Re: 301 john deere WHITE SMOKE in reply to bdr2431, 02-17-2008 13:35:18  
I have checked oil and there is no water getting in the pan. I will try disconnecting return and see what that does. I have thought about a compression problem. I do not own a compression gauge or adapter to fit a 301 but I am in the process of aquireing one. Thanks everyone for your input. It was very helpful. When I figure this one out I will be sure to post the answer.



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J Schwiebert

02-17-2008 17:19:50




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 Re: 301 john deere WHITE SMOKE in reply to bdr2431, 02-17-2008 13:35:18  
Have you thought about having a compression problem? white smoke not enough heat to fully burn the fuel.



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CCer

02-17-2008 16:45:27




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 Re: 301 john deere WHITE SMOKE in reply to bdr2431, 02-17-2008 13:35:18  
try disconnecting the fuel return line system, from the injectors and the pump, then start the engine,for a short time. if the problem is resolved, re check the return system, a blockage in the return system will cause the smoke.



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wilamayb

02-17-2008 13:51:47




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 Re: 301 john deere WHITE SMOKE in reply to bdr2431, 02-17-2008 13:35:18  
Do you happen to be losing any water? Can you see bubbles coming to the top of the radiator with the cap off? If so you may have any or all of the following: blown head gasket, hole in a piston liner, or a cracked head allowing water into your combustion chamber.

Water in the combustion chamber will certainly cause white smoke.

Just a thought since those old Dubuque engines were notorious for having holes in piston liners.

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bdr2431

02-18-2008 11:12:38




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 Re: 301 john deere WHITE SMOKE in reply to wilamayb, 02-17-2008 13:51:47  
Cranked it up today and happened to notice white smoke is also coming front vent tube that comes out of valve cover. Does this mean Head gasket?



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bdr2431

02-17-2008 14:07:20




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 Re: 301 john deere WHITE SMOKE in reply to wilamayb, 02-17-2008 13:51:47  
That is what is so puzzling. I am not losing any water and I do not see any bubbles in radiator or have any strange smell to water.



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zwr

02-17-2008 19:17:14




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 Re: 301 john deere WHITE SMOKE in reply to bdr2431, 02-17-2008 14:07:20  
Make sure water's not getting into the crankcase. Start the engine from overnight cold, let it run 2-3 minutes and check the dipstick for water (white-ish color).



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