Same usual problems but fixed myself
I had the problems as everyone listed. I have a 2002 TBird with now 55,000 miles on her, owned for 18 months. Started popping out the back exhaust and then losing power at the same time so obviously a misfire. decided to change the
coils, ended up finding a great deal
on Ebay from a company in miami where I got a set of eight
coils for $65.
upon removing the
coils I found oil in three plug holes on the right side and one very bad on the left. So obviously have a leaking gasket, only two companies make the gasket set for this car, best deal was
amazon for $41.65. It comes with
valve cover gaskets,
spark plug seat gaskets and all the bolts get new washers as well.
This meant I had to remove the valve covers (yes its a long and hard job but is possible if you know what to do), clean the covers off due to the plug seat gaskets actually melting inside the holes, found Goo Off removed this very well. Someone who had previously worked on this car before i had it tried putting silicon caulking inside the holes by the
coils thinking this would solve the problem...DUH! Soooo had to clean that out, again Goo off is great.
Now to be very honest to remove the valve covers you need to unbolt and move around as best as possible a lot of junk they fit over them inside the engine compartment so be prepared for a lot of frustration and injured hands.
The replaceing of the gaskets is very easy in itself as they are preformed rubber and just fit into the slot around the edge of the
valve cover and the bolts stay in the cover holes with the new washers holding them there, this keeps the gasket from falling out when you turn it over to refit back onto the engine.
So in total I changed the gaskets, the
coils and I put new bosch iridium
spark plugs in.
Total cost in
parts was around $150
The savings in labor had I taken it somewhere is easily $1000 to $1500.
My neighbor is a mechanic for Toyota and even he said that would cost plus he admitted that they would not have cleaned the melted
spark plug gasket seats from the holes, they would just have put the new ones on top of it.
She started first time in a massive plume of smoke (well I did disconnect a lot of stuff including a fuel line that blocks the
valve cover plus the oil still sitting around) and then she was fine, used her constantly for two days, runs like a dream.
Now I did buy a set of U joint socket adaptors for the ratchet wrench as this means you can release the bolts at 90 degrees and boy do you need them, some bolts are almost impossible to get to.
What i found out was several
coils had been replaced and there was no way a mechanic could have missed the oil, also one
spark plug seat gasket was missing completely and due to the oil leak going on for quite a time I imagine the
plugs themselves were pretty well burnt out.
So for all its worth I recommend doing it yourself, the cost now is actually pretty good I think.