Question about Peugeot Liberte
'91 Mustang 2.3 4 cylinder stick with under 90k. car leaks oil on driveway so I've put STP additives or similiar into crankcase. doesn't overheat but after 10 days of continual oil leak & my putting in heavy additives including stop leak it has all of a sudden started smoking both at idle & while acceleration . the smoke is bluish & is excessive! Would get ticket if I drive on highway. I used a motor flush on the assumption that I had clogged up the oil passages then drained it & put in regular oil & a product called no smoke but oil pressure gage reads 140, Very Low & car continues to smoke. What i wonder is a solution/ Sincerely, gary
The initial oil leak will most likely be attributed to a worn seal or gasket. I'm sure your aware of this anyway. My concern is that the additives, although advertising a sure fix, may have made your problem worse. I personally don't believe you can buy any product that will fix faulty seals and gaskets as you drive. Typically we as drivers do not pay attention to a fluid leak in it's early stages. There might be a chance that then would be the time that these "gasket in a can" fixes would treat or slow down the leak. What will ultimately happen is the gasket goes bad anyway. Most of us don't notice the drips until they're all over the driveway. You see, if you were adding these things and not actually putting in the proper viscosity oil during this time. The oil got diluted and internal engine component wear may have been accelerated.The internal oil passages can clog and bearing surfaces can lose they're critical tolerances. In many cases causing low oil pressure. Your engine's oil pump pickup screen may be partially clogged with sludge as well after the motor flush knocked all the gunk into the pan.
As for the smoking, the oil rings on one or more pistons probably have broken. Your engine's pistons will have a couple of "rings" that seal the piston in the cylinder. There'll be a set of compression rings and an oil ring. The bottom ring is the oil ring that keeps excess oil out of the cylinder. What happens is the oil ring breaks and allows the engine oil up into the combustion chamber. There it's burned producing your cool James Bond smoke screen. Unless you plan on rebuilding the engine, chances are you'd be better of replacing it with a used one. It's usually much less expensive that way.
My vehicle at the time was a 1990 Acura integra w/200000 miles on the engine. One day as I was happily driving down the road....poof....James Bond!.. Car lost power and I couldn't see for blocks behind me. Didn't need GPS to find my house that day, just had to follow the cloud. This particular vehicle actually never smoked prior to that day. Anyway, I pulled the engine, and took it apart. Sure enough, as I had feared, the oil ring on #3 piston was broken. Ultimately I replaced the engine.
Good luck with yours, and I hope this helps.
Posted on Nov 14, 2008
If your pressure gauge is reading 140 you have excessive oil pressure it should be around 40 ish.(Psi)Unsure with your oil pump but they generaly have an inbuilt pressure relief valve and it sounds like yours is no longer working.No smoke oil is very thick oil and resistant to flowing.Try draing oil replace oil filter and find out if your pressure relief is where the filter screws onto the engine or if its in the pump,Replace with correct oil for your engine and do a compression test to determine if your engine is still worth spending time and money on,should be around 140 Psi give or take but too much lower and its time to look at replacing.You could have also clogged up the oil filter It will take a little time for the oil to burn off after you have tracked down your problem.
Posted on Nov 14, 2008
I'VE GOT NEWS FOR YOU. AN OIL PRESSURE READING OF 140 IS EXTREMELY HIGH, LIKE OFF THE SCALE HIGH! THIS IS LIKE HAVING MOST OIL LINES PLUGGED WITH GOOP YOU HAVE BEEN DUMPING IN YOU POOR CAR TO TRY TO SOLVE THE PROBLEM. I REALLY HOPE YOUR OIL READING IN WAY WRONG, BECAUSE YOU ARE ABOUT TO BLOW THE RINGS AND MOST GASKETS AND MISC. PARTS OUT THE SIDE, TOP, AND BOTTOM OF YOUR ENGINE, FIRST OFF, I WOULD NOT DRIVE LIKE THIS UNTIL YOU DO THIS. PLEASE! DRAIN YOUR OIL AND GUNK, ALL OF IT AND CHANGE YOUR FILTER. THEN ADD A OIL LIKE STRAIGHT 30 WEIGHT OR 20-40W AND PLEASE HAVE A CYLINDER COMPRESSION TEST DONE ON YOUR VEHICLE TO SEE HOW BAD YOUR COMPRESSION LOSS IS. REMEMBER, STOP LEAK AND SUCH ALL PLUG YOUR HEATER CORE, SO DON'T EXPECT HEAT THIS WINTER. SORRY, NASTY SIDE EFFECT THEY DON'T BOTHER TO TELL YOU! GOOD LUCK! LET ME KNOW HOW THINGS TURN OUT! JUST REPLY TO: ARCLIGHT1217
Posted on Nov 14, 2008
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Posted on Jan 02, 2017
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The most common cause of blue exhaust smoke is oil leaking past engine seals and into the cylinders where it then mixes and burns with the fuel. This is most frequently seen in older or high mileage cars with worn seals and gaskets. It only requires a very small amount of oil leaking into the cylinders to cause excessive blue exhaust smoke.
Blue exhaust smoke only at start-up can indicate worn piston seals or damaged or worn valve guides which may also cause a rattling noise. An external engine oil leak can drip onto hot engine and exhaust parts causing what appears to be blue exhaust smoke. Other possible causes of blue exhaust smoke include: piston wear, worn valve seals, a dirty or non-functioning PCV valve, worn piston rings, an intake manifold gasket leak, worn engine oil seals and possibly even head gasket failure.
Oil leaking into the cylinders can cause a rough idle, misfire and fouled spark plugs. In addition, a reduction in power and oil loss can be indicators that the blue exhaust smoke is caused by an internal engine oil leak. Internal engine oil leaks can also allow fuel to mix with the oil in the crankcase which will degrade the oil and prevent it from adequately protecting the engine.
Operating a car with a severely dirty oil filter, air filter or improperly functioning PCV valve can also sometimes result in engine oil blow-by, oil loss and blue exhaust smoke. Periodically checking the engine oil level with the oil dip stick will indicate if there is excessive oil consumption. Higher viscosity engine oil can sometimes temporarily reduce the amount of blow-by; however, this is not generally recommended. Excessive blue exhaust smoke indicates a possible internal engine oil leak that should be inspected by an ASE certified mechanic.
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