Starts but idles badly. - Toyota Nation Forum : Toyota Car and Truck Forums

groovy · 01-06-2010, 11:43 AM

1997 Corolla

I was driving home the other day and my engine started making a bad tapping sound, When i got it home it had changed into more of a knock and the mil was on and the code was a cyl. 4 misfire. Any ideas on what it could be?

cipher93 · 01-06-2010, 07:06 PM

Check all the basic stuff first: sparkplugs and gaps, plug wires, distributor cap, distributor rotor.

speedy25 · 01-07-2010, 12:01 PM

By your audio description, it sounds like you are losing a rod. Unless you find something obvious, you'll be dropping the pan for an inspection.

Hows your oil consumption/level been?

-SP

groovy · 01-08-2010, 10:15 AM

Its always had an oil problem but it hasn't changed lately, But your probably right it has almost 400k i imagine its due for a rebuild.

topnotch · 01-08-2010, 11:48 PM

yea its probaly that time for sure i recently got mine overhauled so if its goin to be that change eveyrthing

cipher93 · 01-10-2010, 10:19 PM

If it is a rod, ring, or something of that nature you're better off just getting an engine from a junker. That said if you run a compression test and nothing is wrong, I wouldn't touch it.

mvftw · 01-11-2010, 03:28 PM

As mentioned above, do the basic stuff & check for a vacuum leak (broken hose)...