How do I get out spark plugs on right bank of cylinders? - '78 Seville

[david.randall]

All,

I changed cap, rotor, wires, and four spark plugs today (the ones on the left bank if you're sitting in the car). The forward plug on the right bank has me stumped; how do you get to it? From underneath? Or, do you have to take-off the air conditioner pump?

Thanks,


David

[Roger H]

Hello David,
I do not have specifics on your exact car however, I  worked in an auto shop for several years when that era of car was common and here is what I can pass on.
I never needed to remove a major component when changing spark plugs.  You may need to  jack the car up and access the plug over the tire  and thru the flap hanging by the upper control arm or under the hood like most cars.   also you may need a combination of some of the following tools, spark plug socket with a universal wobbly on the end, a long  (36 inch)  extension, short extensions ( 1inch, 3 inch, 6 inch ) flex head ratchet, regular ratchet,  with those tools in the right combination you should be able to remove the spark plugs

Good luck

Roger H

[david.randall]

Thanks, I'll try that. I thought I might have to install a few more elbows on my arms...

[35-709]

I had to remove the right front tire to change the right rear plug on a '76 Seville.  Don't remember any major problems with the rest of them, the car did have AC.

[The Tassie Devil(le)]

Just be thankful it isn't one of those horrible Asian V 6's where the rear bank require removal of the Intake Manifold and a lot of stretching and contorting.

Bruce.

[76eldo]

Like the previous post dais, you need to have a variety of sockets, extensions, universal adapters, and sometimes a wrench on the end of a spark plug socket.

You can do this, just look at it for a while, and you will figure it out.

Then come over and give me a hand with the rear bank of plugs on my Allante...

Brian

[david.randall]

In the '80s when I was a teen I worked at my cousin's corner country garage, and the worst car I had to change plugs on was a Chevy Monza Spyder with the little V8 engine (262?). I have medium sized hands (the smallest of all the guys at the shop), and I could only unthread the rear plugs half way before they hit the body of the car. We ended up putting the car on a hoist, unbolting the engine and tranny mounts, and dropping the whole unit as far as we could, and I could JUST get the rear plugs out. They were obvously the original plugs and there was no electrodes left: completely burned away! All eight new plugs made the car run like a dream, and the present owner had never had the car run on all eight cylinders.

Changing plugs in a 460 Ford van required little hands, but I've never tried an Allante...

[Gene Moscicki]

Wait until you have to replace the fan motor for A/C and heat. The shop manual says to REMOVE the inner fender!! I took an air chisel to the inside of the inner fender and cut out a hole to get it done then fastened a cover over it. On Chrysler 300s , the ones with the LONG cross ram manifolds of the 60s there is a removable door on the inner fender to get to the spark plugs. Good luck as I have not yet needed to change the plugs on my 79. with 22k miles since a total rebuild. gee, I hope they were changed then. Let us know once you figure it out.

[David #19063]

On Chrysler 300s , the ones with the LONG cross ram manifolds of the 60s there is a removable door on the inner fender to get to the spark plugs.

That is good to know.  I have always wanted a '60 300F Hardtop...but with their prices, I'll have to win the PowerBall first.

[david.randall]

The forward plug on the right bank has me stumped; how do you get to it? From underneath? Or, do you have to take-off the air conditioner pump?

Someone on this forum suggested to try from underneath the car, and this turned out to be relatively easy for all for all four right bank spark plugs.  I had to take the four out on the left bank also, as I forgot that the Seville calls for a 0.080" gap, not the 40 thou I'm used to.

I FINALLY have all the facuum hoses replaced and PCV and new EGR valves installed. These cars do not run properly without all of this working, and the old fella who owned the car before me thought vacuum hoses were something to get rid of. The car's running great

Tootles,


David

[david.randall]

I FINALLY have all the facuum hoses replaced...

I have the vacuum hoses changed too...