2000 mercury sable. Head gasket was just replaced. 2 cylinders are leaking oil. Both have compression and when the plugs were replaced, they did not start to foul until after the car was being driven.
2007-06-20 14:20:00 · 7 answers · asked by Anonymous in Cars & Transportation ➔ Maintenance & Repairs
To test this remove a spark plug and insert the compression gage, turn the engine over and see how the compression is. If it is normal then the valve seals are leaking, if it is low, then the rings are worn out.
2007-06-20 14:32:52 · answer #1 · answered by Anonymous · 1⤊ 0⤋
Could be either. If you can, perform a cylinder leakdown test. If the cylinders are leaking, add about a tablespoon of engine oil to the cylinder through the spark plug hole. If the rings are leaking, the oil will help seal them while you leakdown test the cylinders again. If the leakage has stopped, the rings are leaking. If the leak persists during the second test, the valve guides are likely the cause.
Good luck!
2007-06-20 14:23:55 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Worn Rings
2016-12-15 05:01:20 · answer #3 · answered by ? 4 · 0⤊ 0⤋
This sounds like worn rings. When valve seals are worn the engine usually smokes when first cranked up because the oil runs down valve stems from the top of the heads after the engine is shup off.
2007-06-20 14:29:16 · answer #4 · answered by birdman 1 · 1⤊ 0⤋
If valve seals or guides are worn, the engine would smoke at startup.
If the rings were bad, the engine would smoke durring deceleration.
If your spark plugs are fouling, maybe you have the wrong spark plugs?
ADDED:
A compression test will NOT tell you if your valve seals are worn. (valve seats maybe)
ADDED:#2
A leakdown test will not tel you if your valve guides are bad, only wether or not the valves are SEATING!
2007-06-20 14:34:23 · answer #5 · answered by Mr. KnowItAll 7 · 1⤊ 0⤋
If it,s only the valve seals the engine will smoke at startup and when setting idleing. Rings usually cause it to smoke when accelerating.
2007-06-20 14:44:06 · answer #6 · answered by c99challenger 3 · 1⤊ 0⤋
Hydraulic control valve as used in industrial applications are built in several pressure ranges. The majority of present applications are in the range of 0 to 1500 lb per sq in., but the trend is toward higher pressures. Various types of valves are used in hydraulic systems to control or regulate the flow medium. Hydraulic valves contain and transfer the flow and pressure of hydraulic fluid in hydraulic power systems. They range from simple shutoff valves to precision control valves. Common types of hydraulic valves include angle, ball, block and bleed, check, control, cartridge, directional, drain, needle, poppet, pressure relief, safety, shut off, solenoid, spool, and stack mounted valves. In their unpowered state, hydraulic valves can be normally open (open center) or normally closed (closed center). Hydraulic control valves with a tandem center connect the pressure and tank ports, but block the service ports to allow system unloading and isolation of the service lines. Devices with a float center allow the supply to be shut off and enable the load to move to other services.
2007-06-22 16:07:17 · answer #7 · answered by Anonymous · 0⤊ 0⤋