1991 Toyota Corolla

MESTUPKID87

MEMBER
1991 TOYOTA COROLLA

Engine Performance problem
1991 Toyota Corolla 4 cyl Wheel Drive Type unknown Automatic 170000 miles

A cylinder in my engine is misfiring. I replaced all the spark plugs and wires and this didn't help so I took it to a mechanic and he used some meter and the misfiring cylinder read about 30 psi while all others read about 150. He said I needed a new engine because something was stuck open. Is there any other way this problem could be fixed without going as far as replacing the engine?

2 Replies

FISHERMAN

MECHANIC
938 POSTS

Could be fix by a head job, but you know that your engine has 170 k miles and that is a coin in the air.
Could be a bad head gasket, a bad valve.

Is up to your pocket if you plan to keep your car for a while.

Good Luck!

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Saturday, March 22nd, 2008 AT 1:00 PM

MMPRINCE4000

MECHANIC
8,549 POSTS

I would take the valve cover off and take a look at the camshaft lobes, shims, bearing caps looking for anything substantially worn.
Check to see if a valve is stuck open.

If you find anything bad, like a worn cam lobe on the cylinder in question, you could get a rebuilt head, or have the existing head rebuilt.

You could buy a used engine from a junkyard.

I replaced a 4A-FE in a 1991 Corolla and have about 10,000 miles on it, I paid $350 for the engine that had about 70K on it.
I did the work myself, if you don't want to tackle the job, you could find a garage that would probably charge you $600-900 for labor.
Just make sure the used engine was runnung and the compression on it was checked.

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Sunday, March 23rd, 2008 AT 7:29 AM