92 ranger using oil.
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92 ranger using oil.
So I have a 92 ranger with the 2.3 liter 5 speed motor in it. It has 139,000 miles on it. It uses between one to two quarts of oil every tank of gas. It only smokes when I go over a hill and let off the throttle and let it coast. Any suggestions on what could cause this?
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Wouldn't it smoke at start up or just normal acceration if it was the rings?
Cargo Master
Joined: Jun 2010
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From: Iowa
The PCV valve is cheap and can cause these symptoms, I would try replacing it with your fingers crossed for good results.
Edit, reread your first post, thought it was per Oil change. 2 quarts of oil per tank of gas is a significant loss, are you positive it isn't leaking it out?
Edit, reread your first post, thought it was per Oil change. 2 quarts of oil per tank of gas is a significant loss, are you positive it isn't leaking it out?
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The PCV valve is cheap and can cause these symptoms, I would try replacing it with your fingers crossed for good results.
Edit, reread your first post, thought it was per Oil change. 2 quarts of oil per tank of gas is a significant loss, are you positive it isn't leaking it out?
Edit, reread your first post, thought it was per Oil change. 2 quarts of oil per tank of gas is a significant loss, are you positive it isn't leaking it out?
Logistics Pro
Joined: Jan 2002
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From: suburban atlanta
Most times an engine that smokes blue when the intake manifold vacuum is high will have failed valve stem seals. The manifold vacuum can pull oil down the stem and feed it to the engine to burn. The seals can turn to 'crumbles' after enough time and heat, and quit functioning.
You can replace them without removing the head if you have a piece of rope to feed into each cylinder to hold the valves from dropping into the cylinder. Placing the rope, and turning the crankshaft to get the piston to near TDC will work, having a manual transmission put in 4th gear will help. One cylinder at a time, remove the cam followers, valve springs & keepers, and seal remnants. Install new seals, the springs and keepers, and then the follower. Release pressure on the rope, and rotate to the next cylinder. Firing order of 1342 will allow you to place the rope in order.
Bad rings generally will make smoke on hard acceleration. Valve stem seals will be bad when you sit at idle(high vacuum) and then open the throttle, and you get a puff of smoke.
tom
You can replace them without removing the head if you have a piece of rope to feed into each cylinder to hold the valves from dropping into the cylinder. Placing the rope, and turning the crankshaft to get the piston to near TDC will work, having a manual transmission put in 4th gear will help. One cylinder at a time, remove the cam followers, valve springs & keepers, and seal remnants. Install new seals, the springs and keepers, and then the follower. Release pressure on the rope, and rotate to the next cylinder. Firing order of 1342 will allow you to place the rope in order.
Bad rings generally will make smoke on hard acceleration. Valve stem seals will be bad when you sit at idle(high vacuum) and then open the throttle, and you get a puff of smoke.
tom
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From: SW Va
Welcome to FTE.
Did this excessive oil use come about slowly over time, or suddenly after some event?
Do you seem to have excessive positive crankcase pressure at idle with the oil fill cap removed? If so, does it smell strongly of fuel, or exhaust?
Did this excessive oil use come about slowly over time, or suddenly after some event?
Do you seem to have excessive positive crankcase pressure at idle with the oil fill cap removed? If so, does it smell strongly of fuel, or exhaust?
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From: suburban atlanta
PCV valve is a good thing to check as one that is gummed up and stuck open will apply full manifold vacuum to the crankcase any time the engine is running. A functioning PCV system will hold a postcard to the oil filler on the cam cover with the engine at idle. It should have a slight vacuum develop over a minute or so that will hold the card if you hold it stationary for a while. It should not be pressurized, and should not suck the postcard into the cover. You could use a hand to feel for the vacuum, but the cover is generally too hot to touch for that length of time.
tom
tom
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PCV valve is a good thing to check as one that is gummed up and stuck open will apply full manifold vacuum to the crankcase any time the engine is running. A functioning PCV system will hold a postcard to the oil filler on the cam cover with the engine at idle. It should have a slight vacuum develop over a minute or so that will hold the card if you hold it stationary for a while. It should not be pressurized, and should not suck the postcard into the cover. You could use a hand to feel for the vacuum, but the cover is generally too hot to touch for that length of time.
tom
tom
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From: SW Va
I agree the PCV valve probably belonged on your suspect list, especially if it's never been replaced, so good idea to have replaced it.
If you have a good bit of positive crank case pressure at idle with the oil fill cap removed & what's coming out smells strongly of exhaust or fuel, you likely have a good bit of ring blow by & maybe carbon clogged ring lands & sticking rings. So you may have more than one problem. If the ring lands are clogged & the rings aren't free to move in them, they can cause excessive oil consumption, blow by that can over pressurize the crank case & can even cause the rings to break. So a number of possibilities are still on the suspect list.
Again, did the problem come about suddenly after some event, or slowly over time?
What service grade & viscosity oil have you been & are now using & what oil change interval?
If you have a good bit of positive crank case pressure at idle with the oil fill cap removed & what's coming out smells strongly of exhaust or fuel, you likely have a good bit of ring blow by & maybe carbon clogged ring lands & sticking rings. So you may have more than one problem. If the ring lands are clogged & the rings aren't free to move in them, they can cause excessive oil consumption, blow by that can over pressurize the crank case & can even cause the rings to break. So a number of possibilities are still on the suspect list.
Again, did the problem come about suddenly after some event, or slowly over time?
What service grade & viscosity oil have you been & are now using & what oil change interval?
Thread Starter
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New User
Joined: Jul 2016
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I agree the PCV valve probably belonged on your suspect list, especially if it's never been replaced, so good idea to have replaced it.
If you have a good bit of positive crank case pressure at idle with the oil fill cap removed & what's coming out smells strongly of exhaust or fuel, you likely have a good bit of ring blow by & maybe carbon clogged ring lands & sticking rings. So you may have more than one problem. If the ring lands are clogged & the rings aren't free to move in them, they can cause excessive oil consumption, blow by that can over pressurize the crank case & can even cause the rings to break. So a number of possibilities are still on the suspect list.
Again, did the problem come about suddenly after some event, or slowly over time?
What service grade & viscosity oil have you been & are now using & what oil change interval?
If you have a good bit of positive crank case pressure at idle with the oil fill cap removed & what's coming out smells strongly of exhaust or fuel, you likely have a good bit of ring blow by & maybe carbon clogged ring lands & sticking rings. So you may have more than one problem. If the ring lands are clogged & the rings aren't free to move in them, they can cause excessive oil consumption, blow by that can over pressurize the crank case & can even cause the rings to break. So a number of possibilities are still on the suspect list.
Again, did the problem come about suddenly after some event, or slowly over time?
What service grade & viscosity oil have you been & are now using & what oil change interval?
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mitch_c
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Oct 28, 2009 06:49 AM