spark plug replace

I have a 94 C4 with a lot of miles on the clock.. I want to change the plugs or at least check them not knowing when they were changed last. After looking into the engine bay I noticed I can't even see the the plug boots on the left bank (drivers side) There is a lot of things in the way manly the "ASR" throttle cable control system. Is this just the cruise control or in it the "fly by wire" throttle control.  I feel way over my head and I am just not sure were to start.. Sure coulde need some advise.

It's not as bad a job as it looks.  I bought a '94 C4 a year ago that ran rough so I did a tune up that included the plugs.   The only one that was really difficult was the passenger side rear.  I had trouble getting my hands in between the exhaust manifold and the A/C coil housing.   But I was able to do it with help from the wife and her smaller hands.

One big tip that I can give you, especially on the driver's side, is to jack the car up, support it on a jack stand, remove the wheel and the fender liner section behind the wheel.   With that out of the way with a long socket extension you can get in "under" some of the things like the ASR control module and the brake master cylinder.

Make sure you use a torque wrench to tighten the replacement plugs as you don't want to take the chance of over tightening the plugs in the aluminum heads.  

The rear on the passenger side I found it useful to have a spark plug socket that has a hex at the top end so that I could put a box wrench over the hex to loosen the plug.  There was not enough room for the ratchet handle, it would hit against the A/C coil housing as the plug screwed outward. 

Enjoy your Vette!

Basically, I agree with Bob. I remove the middle inner fender cover and  there's not much to removing the ASR bolts, leave the cables and push it out of the way too. Also, the A/C support rod. The right rear (#8) is the worst for sure but it's not too bad from the bottom if you can get access to a lift and use a wrench on the socket. #6 the same way.

|UPDATED|5/28/2012 6:23:02 PM (AZT)|/UPDATED|

If you do the wires, get Taylor or MSD.

Thanks for all the tips guys -- I'll be doing my '94 rag in the spring.

C.