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Massey Harris & Massey Ferguson Tractors Discussion Forum

1085 problem, low oil and knocking engine

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Matt Poore

06-13-2005 08:37:44

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We have a MF 1085 that had the oil pressure drop this weekend. It ran awhile (?) before we noticed it but it did not get hot. When we checked the oil it was WAY low (down 7 quarts). It has never used oil so it had been several weeks (maybe 20 hrs) since it was checked. After refilling it started ok, but now after running about an hour it is making a deep metalic knock intermittently from the engine block. We disconnected the water pump and alternater belts and ran a minute and the sound is definately coming from the block. Any ideas on why it lost oil and what might be wrong?

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txgrn

06-13-2005 09:14:58

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Re: 1085 problem, low oil and knocking engine in reply to Matt Poore, 06-13-2005 08:37:44

Where did it go? On the ground, out the stack?

Deep knocking down in the engine is rods or mains....probably rod bearings as the piston moves up and down there can be some slack and when the rod picks up the slack you hear it...should be louder on acceleration. May have spun a rod bearing (insert). A gong gong gong is more like a main bearing.

You can check rod bearings by cracking the fuel inlet line at an injector (moving down the bank of cylinders, one at a time) and listen for a reduction of the noise with nothing changing but the disabling of the cylinder. When you tighten the fuel nut back, the noise should return to it's original intensity.

Neither would make you use oil but could surely be damaged by low oil pressure caused by an empty sump.

Mark

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