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On the 1990 chevy lumina 4 door sedan how do u change the back 3 spark plugs?

It has a fuel enjection system 6 cyclender in doing a tune up i was only able to reach the front 3 spark plugs

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Some can be reached from the bottom or in other cases you may be able to gain access from the wheel wells not always a fun job i havent done plugs on a lumina before so good luck hope this info helps

Posted on Jan 05, 2013

  • oralraven67
    oralraven67 Jan 05, 2013

    thanks it helped


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I just finished doing this last week. Here's the trick. You need to remove the 6 bolts (3 on each side) that hold the 2 engine mount braces (black cast iron and steel, right above the radiator) in place. rotate them up, back and out of the way. You need to have a block of wood or something to put behind the front tire for the next step. With the car in park and emergency brake OFF, roll the car a few inches backwards (as far as you can), then roll it forward pretty hard as far as you can and immediately push the block under the back of the front tire before it can roll back. when you roll the car forward it torques the motor forward allowing easier access to the back 3 plugs and wires. You can follow the other advise here as far as actually replacing the wires and plugs themselves. Just remember to do them 1 at a time so you don't mix up the wires.
Have A GREAT Day
Stu Thomas

Posted on Dec 19, 2014

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Posted on Jan 02, 2017

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SOURCE: changing spark plugs 95 chevy lumina van

you will have to take off the coil packs and move them out of the way. then go in from the top. its kinda tight but just move whatever else is in the way

Posted on Jan 09, 2009

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SOURCE: 1995 lumina cranks but will not start

Sounds like it has jumped timing, dont know which engine you have so could be chain or belt.

Posted on Mar 23, 2009

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SOURCE: 1990 Chevy Silverado Pick-up. No spark from the plugs.

fairly new won't quite do it. HEI ignition? They have a very hot spark and that hot spark burnsthe rotor in its center under the tang through to groung,advance weights. Change rotor and place some silicone on center of cap and the underside center. - Good luck. -Ned
Note, HEI ignition, coil is on top of distributor under a plastic cap.

Posted on Jun 23, 2009

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SOURCE: my 1991 Chevy lumina 4 door sedan keeps failing

Did they explain the fuel evap test to you and what may have caused you to fail? Most smog tests that I've dealt with only test your gas cap and don't actually test your evap system itself. Gas cap is part of your evap system so when the cap fails, you automatically fail your evap system test even though they don't actually test it.

I recommend replacing your gas cap and giving it another shot as the cap will cost $10 to $20...

Posted on Sep 21, 2009

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Do you happen to have a hacksaw blade? The thickness of the hacksaw blade is equal to the clearance of the
spark plug contacts. You can put the hacksaw blade flat
between the contacts, and make the necessary adjustment. Then, start your engine. Send in your e-mail
so we will know.

Posted on Oct 11, 2009

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