smoking 8n

michfarmer · Feb 25, 2010

i have a 1952 ford 8n it is all orginal. it runs great but it smokes and burns oil real bad. dont know if i should just put new rings on it or redo the hole thing. what do you think. the guy i got it from put marvel mystery oil in it and it has smoked ever since.

Jubilee85 (VA) · Feb 25, 2010

Runs great ? define "real bad" - o' burn a quart in 5 hours ? 10 hours? Does it burn 100% of running time, or slow down on the burning oil after it warms up? MMO will burn off after a while.

Do a compression test - might give you an idea "what" is worse - the rings - valves or whole nine yards. Good thing, it is almost free, and will tell you whats going on inside w/o tearing her down.

forddoc · Feb 25, 2010

it probably smoked well before he put the snake oil in, you said it smokes and burns oil real bad.
Well you could pull the head and see how much cyl wear and piston slop you have. more than likely needs to have a quadruple bypass.

If you're gonna keep er rebuild er.

michfarmer · Feb 25, 2010

that is some good tips. thank you. i havent had it very long and i changed the oil when i first got it. it has ran no more than an hour and a half and i havent even worked it. the oil gage went from 40lbs to running 10lbs i checked the oil and it just shows on the stick and there is no oil on the floor. it dont smoke at an idle but when you rev it up it smokes non stop.

NOXJohn · Feb 26, 2010

Do a compression test, dry and wet, that will give you an idea what shape the engine is in. A cheap rebuild will cost you around $2-$300. A full rebuild around $1000. If mission creep gets you and you replace the king pin, axle bushings, brakes, seals, clutch and anything else you find worn or needs painting you can hit $2000 easily. BTDT. However, when you get done you will have a tractor that should need nothing more then a tune up and oil change for the rest of your life.

rapture505 · Feb 27, 2010

Try working her......mine smoked REAL bad after sitting for a few years (still ran like a swiss watch though).....after keeping an eye on oil level and filling her up as needed she quit smoking (or at least it drimaticly reduced)....turns out the rings just needed time to re-seat....

JMOR · Feb 27, 2010

(quoted from post at 00:27:50 02/26/10) that is some good tips. thank you. i havent had it very long and i changed the oil when i first got it. it has ran no more than an hour and a half and i havent even worked it. the oil gage went from 40lbs to running 10lbs i checked the oil and it just shows on the stick and there is no oil on the floor. it dont smoke at an idle but when you rev it up it smokes non stop.

hat would be one serious oil burner if it sucked down 2 quarts in one hour! Was it initially FULL on the stick after your changed and run enough to fill the oil filter? You didn't put too light a weight oil in it did you?

Anonymous-0 · Feb 27, 2010

oil additves can be dangerous in an old motor. good regular oil is best. If you have sludge in the pan or tappet covers, you need an overhaul.

smoking 8n

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