Question about 1991 Toyota Corolla

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Piston rings I installed new piston rings for my 1991 toyota corolla but now my car wont start and theres oil when i take out my spark plugs what could be the problem?

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Hmmm,suggest you do a cylinder compression check to see if ring job is holding pressure.
if tester tip gets wet you either have faulty oil rings or bad valve stem seals but compression test fail is obvious ring failure.no or low compression = no start.

Posted on May 09, 2009

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What should I do? Get another car?


Possible bad spark plug or coil pack. Weak compression could be bent valve, worn piston rings, or head gasket. Black at the tail pipe is from unburned fuel from your cylinder miss.

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This could be as simple as damaged spark plug wires (due to oil spray) or as serious as burnt valves or blown head gasket. I would first clean the engine bay of all oil residue. If the ignition wires seem to be sticky or melty even after cleaning, they are probably bad. You can confirm this by watching the engine in a dark garage while someone else turns the key. Make sure you oil is at the correct level. If you see sparks jumping from the wires to the engine block or valve cover, they are bad. Another test to do is compression. You can rent a tool for this at most auto part stores. Check the compression on each cylinder, again making sure the oil level is correct. If one or more cylinder reads very low, you probably have a burnt valve or a head gasket leak. If all cylinders are about the same, but the pressure is low, the piston rings may have been ruined. You can pour a small amount of oil (1-2 tbsp) into each cylinder through the spark plug hole and retest. If the pressure reading increases substantially, the rings are bad. If not, the.head gasket has probably failed. Assuming that the oil never ran out and the engine never overheated, however, the main problem is probably in the ignition. A tuneup with new spark plugs, wires, distributor cap and rotor may solve the problem completely.

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Car wont start tried a few things it cranks but wont turn over and i have pulled the plugs out to see if there is spark and there is also when i took the spark plug out i put gas in there and it still...


If no spark, timing belt may have snapped. Hopefully, the pistons didn't bend the valves. Were you driving the car when it stopped running? If it just won't start, my just be the ignition coil.

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Take your vehicle back to your mechanic, and have him perform a DRY, then a WET compression test. Please provide both readings back to me. In the meantime, ask him what it would cost you to him replace the piston rings. This is your problem. The 2 tests will simply verify me thinking.

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If Biggy1 has described it right, I think when you remove the WIRE to the spark plug ( not the plug itself ) and oil jumps out, there is a cylindrical seal that needs replacing and one does not need to even remove the cylinder head.
I have the same problem with my corolla. On the other hand if Biggy meant when removing the SPARK PLUG oil was on the contacts....

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1 Answer

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