Best Answer
Spark Plugs on a LuminaHere is advice and input on this job from FAQ Farmers:
  • The engine must be tilted forward.
  • Tilting the engine forward is a pain in the butt and risks breaking/stressing lines/connections. Still a pain, but easier, is removing the alternator. Disconnect the battery. Remove serpentine belt from the alternator by slacking back the tension pulley. Remove the front bolt on the alternator, tilt the alternator back to access the rear bolt. Once alternator is removed, access to the plugs is still tight, but you can reach behind the engine with the necessary tools (you will need extensions for your ratchet wrench) to get to the plugs. Just finished this job about 10 minutes ago. No wonder the car was missing on my 1990. Found gaps to be .055 - .075. For my year and model (3.1 sedan) gaps should be .035
  • You will find when you remove the bolts at the upper mounts(dog bones) their is a hole at the bottom of the mount so when you pull engine forward reinstall bolt thru this hole to hold engine forward. I am a licensed mechanic I own a 90 and 91 lumina 3.1. The proper gap is 60 thousands.
  • Changing spark plugs on Chevy Lumina 3.1 engines or similar: To do this job car must be in neutral. loosen motor mounts. Take bolts holding engine out. at the bottom of right motor mount is a guide hole. the front mounts should be loose so you can raise them. When rear bolts are out take a pry bar or facsimile pull motor forward attach bolt or facsimile to hole at bottom of the motor mount to hold engine in place. When finish installing plugs or whatever it is that you need to get this clearance. You do the reverse to get engine back in position. Remember car must be in neutral to do this correctly.

My own addition: Beware moving the engine may loosen the donut where the exhaust pipe/catalytic converter and manifolds Y pipe meet. You will also need wrench extentions and adapters to allow some "bend" in the wrench. Penetrating oil or solvent is recommended to ensure an easy removal of the plugs. Access is still tight and you may have to feel your way.

User Avatar

Wiki User

โˆ™ 2011-09-13 04:21:09
This answer is:
User Avatar
Study guides

Add your answer:

Earn +20 pts
Q: How do you get to the rear spark plugs on a 1991 Chevy Lumina with a 3.1 V6 engine?
Write your answer...
Still have questions?
magnify glass
Related questions

How do you change spark plugs on a 1993 Chevy Lumina?

Spark Plugs on a LuminaSee the related questions to the right. HOW DO YOU CHANGE THE SPARKS PLUGS ON A 1993 CHEVY LUMINA APV 3.8L 231-V6 ENGINE (an van)

1992 3.1 Chevy lumina how to change back 3 spark plugs?

The engine can be moved forward slightly.

Chevy Lumina Euro 3.1 v6 Engine cutting out?

my 93 lumina was cutting out and i cahnged the fuel filter and spark plugs and it runs good

Why does engine turn over but won't start on a 1993 Chevy lumina?

One reason a 1993 Chevy Lumina may turn over but not start could be the battery. It may also be the spark plugs.

What is the spark plug gap for a 1998 Lumina?

The spark plug gap for a 1998 Chevy Lumina (with 3.1L or 3.8L engine) is .060".

Whats wrong with your 1990 Chevy lumina if the spark plugs are not firing?

you are not getting spark. this could be from a bad alternator, bad spark plugs, bad spark plug wires, or bad engine coils. The spark plugs and wires are the cheapest so try putting in new ones of those first.

How many spark plugs does the Chevy Venture 3400 SFI engine have?

The 1996-2006 Chevy Venture has a 3.4L V6 engine and requires 6 spark plugs.

Does the Chevy Colorado have spark plugs in a I5 engine?


How do fix a 1993 Chevy Lumina that is sputtering backfiring and cutting off?

replace spark plugs and wires

Diagram of reconnecting the spark plugs on a 3.1 engine for a Chevrolet lumina?

Car won't start

What is the spark plug gap on a 95 Chevy lumina 3.1 engine?

060 is the gap

What are the costs for spark plugs for a Chevy 454 engine?

Spark plugs are a cheap and quick fix if one goes out. The cost to replace one on a 454 chevy engine however can differ depending in the spark plug brand.

People also asked