1992 Toyota Camry RUNS ROUGH

1992 TOYOTA CAMRY
150,000 MILES • 4 CYL • 2WD • AUTOMATIC
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SCIENCE
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Car started running rough out of the blue. Thought it was bad gas.....no one else had water in gas i was told. I replaced the plugs with bosch doublel platnum 2's.
Car ran great for 2-5 miles and then it was worse than ever. Was told by one mechanic and also read on a blog somewhere to never use platnum plugs on aluminum block engine, or at least not bosch platnums. So i removed the wires to change plugs with denso's and found two of the four plug-wire boots burned through @ base where it fits down on plug connector....so it's arching over to block. Also 2 of the 4 plugs are sooted up bad or carboned up bad and the other two look ok.....there also is some oil on the outside of plugs...could that be a blown head gasket too?
After i put the dendo copper (regular) plugs in there it runs ok, but i know i have to replace the wires too.
I read in another question on this site that i may need to check the exhaust return thing (what's the initials) and the IRG or whatever too.....i did not pay attention to which plugs come off of wires that were burned out on their sides....would those be the carboned up ones or the cleaner ones or no telling?
What else can i do to solve it myself other than wires, distributor cap and rotor? Will the wires come hooked up to distrib. cap (that's a new one to me) or separate or is one better than the other?
Thanks a ton,
allen....science.
Jun 6, 2008 at 11:11 AM
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KHLOW2008
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Hi SCIENCE,

The 2 with soot covered plugs should be where the plug wires were burnt.

Plug wire comes separately from the distributor cap. You need to install them in correct position and order.

If the distributor cap and rotor does not have excessive arching on the distribution point, cracks or any other visible damage, it is not necessary to replace them. Of course new ones would definitely be better.

EGR, (Exhaust Gas Recirculation) is the term. Get the plug cable problem solved before we worry about it.

Oil outside of the plug means oil leakage through the plug wire cylinders and not a blown head gasket.


If replacing the above parts solve the problem, there is nothing else you need to do.
Jun 7, 2008 at 9:26 AM
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