vette/fun

Ok this may sound stupid but I was given a 1986 corvette with 58000 miles on it. I guess I got one of the last off of the production line because it has aluminum heads. My question is I was going to check the plugs but it looks like they have never been changed and are so tight I am somewhat leery about using to much force to loosen them. Any suggestions would be welcome.

Thanks in advance for any help

oldalaskaman

soak w/pb blaster, try to slightly tighten them first, sometimes it breaks things loose with out breaking things.

vette/fun

Thanks I will try it. The car runs ok but I know it must need plugs they are 25 years old haha.

pkazsr

After soaking with PB Blaster when the engine is cold soak each plug with a fast evaporating contact cleaner. The cold produced by the CC might "shrink" the plug threads enough to break them loose.

Tony A.

Be sure you only go to take out the plugs when the engine is cold, otherwise you may strip the threads on the alum head.

l98tpi

Try this- Start the car and let run for around 2 or 3 minutes. Then remove plug wires and remove the plugs. It is easiest to remove the plugs, especially on the passenger side, by removing the splash shield. It is also a good idea to use an extension and a universal when removing and installing the plugs, that will assist in getting the plugs threaded back in correctly.

JackDidley

Change the ones that come out easy. Leave the others until you are up for a major project.

Sidney004

You don't want to create a problem if the car is running fine.
If it were me, I would leave the plugs alone. Save your energy for fixing something when its actually broken. You will have plenty of opportunities.

Tony A.

Totally agree on removing the splash guard (passenger side).

The one thing I found really helpful was I bought a plug socket that is on a swivel. It allows the drive socket to get up in the right angle and seat on to the plug. Made a huge difference....good luck!

http://shop.advanceautoparts.com/web...T|GRP2062_____