1991 Cadillac Allante Spark Plugs

Asked by Jul 20, 2011 at 04:50 PM about the 1991 Cadillac Allante Base Convertible

Question type: Maintenance & Repair

How do you change the spark plugs, on the rear of the engine??

5 Answers

You have to remove the intake manifold at the top of the engine.........


My understanding is that the engine cradle has to be loosened and lowered to gain access to the rear plugs. I have never heard of having to remove the intake manifold for access. While neither option is great, lowering the engine eliminates the need for a new intake manifold gasket, proper torque sequencing of the intake manifold bolts, etc.

3 out of 3 people think this is helpful.


1 out of 1 people think this is helpful.

on my 89 Riviera, i was lucky enough NOT to need to tilt the cradle. i just used a deep socket and 3/8 drive ratchet but that was a 3.8L V6. V8 could be a different story. those years had more space than 2000 model years.


You will be able to get to the # 2 and #4 plugs from underneath the vehicle. It requires a lot of patience and long skinny arms, both of which I lack. lol

Your Answer

Add photo

Related Questions


Looking for a Used Allante in your area?

CarGurus has 87 nationwide Allante listings and the tools to find you a great deal.


Search Cadillac Allante Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Cadillac Allante Experts

#1 bobkat
Reputation 1,270
#2 D_Yaros
Reputation 170
#3 Tom Demyan
Tom Demyan
Reputation 120
View All

Related Models For Sale

Used Chevrolet Corvette
293 Great Deals out of 20,415 listings starting at $3,688
Used Cadillac Eldorado
397 listings starting at $2,600
Used Cadillac DeVille
4 Great Deals out of 1,991 listings starting at $1,600
Used Ford Mustang
583 Great Deals out of 41,215 listings starting at $1,699
Used Chevrolet Camaro
475 Great Deals out of 39,921 listings starting at $3,499