Intake Manifold Gasket Failure


pretty bad
Typical Repair Cost:
Average Mileage:
88,805 miles
Total Complaints:
10 complaints

Most Common Solutions:

  1. not sure (4 reports)
  2. replaced intake manifold gasket (4 reports)
  3. gasket replacement (2 reports)
1999 Buick Century engine problems

engine problem

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1999 Buick Century Owner Comments

problem #10

May 022012

Century 3100

  • Automatic transmission
  • 104,000 miles


buick has a real problem with coolant leak on the 3100 engine they should do a recall because every repair shop say this is a very known problem and buick needs to recall the 3100 head gasket and fix the problems.

- , Greer, SC, USA

problem #9

Dec 182012

Century Custom 3.1L V6

  • Automatic transmission
  • 131,000 miles

This car was struck by the notorious GM intake manifold gasket plague not once but twice. Both times it was around $900 parts + labor. The first time it happened there was only about 80k miles on board. I'd strongly advise anyone who is considering purchasing a Buick to turn away. This car has been quite the headache.

- , Raleigh, NC, USA

problem #8

Jun 082010

Century Custom 3.1L V6

  • Automatic transmission
  • 108,000 miles

First off i just want to say that I absolutely hate Buick. I know so many other people who have had this problem. . If you have a century its almost guaranteed that the intake gasket will blow. Around 108k the intake gasket and intake gasket cover both went bad and coolant was just shooting out the side of the engine. It was about $850 to fix and this was at a shop where I knew the owner very well and got a significant discount. Normally I believe the cost would be around $1200. Either way I will never be purchasing a Buick again, this is only one of the many problems this car has had.

- , Detroit, MI, USA

problem #7

Oct 022009

Century Custom

  • Automatic transmission
  • 70,000 miles


Buick has been building cars for many, many years, why would they build a car with such a major flaw as a head gasket failure. My complaint: Coolant is leaking from the engine from (facing the car) the right rare corner of the engine. What is the most effective way to repair?

- , Virginia Beach, VA, USA

problem #6

Jul 092007

Century Limited V6

  • Automatic transmission
  • 64,000 miles

Seems like fairly common complaint. I was told that it will cost between $ 800 and $ 1200. Is this worth fixing or get rid of this car since it has air conditioner problem and rusted break line problem. Really disappointed in Buick quality.

- , Rogers, AR, USA

problem #5

Apr 152008

Century Custom 3.1L V6

  • Automatic transmission
  • 115,046 miles

Well.. I had my car looked at and they said it needs a lower intake manifold gasket ASAP. Said the leak is very severe. So, it's sitting in my driveway until I can afford the $700 to replace it. I'm thinking about looking for an independent mechanic to knock off about half of the price.

This really sucks for me. The person I bought the car from told me that the gaskets had been replaced at 75,000 miles and everything was sound. I thought I was getting a good deal! Whether this is true or not I'm unsure, he never showed me any receipts.

Oh well, what can you do. Another lesson learned about buying a used car.

- , Hopkins, MN, USA

problem #4

Feb 152008

Century S 301

  • Automatic transmission
  • 111,000 miles


buick needs to recall these cars and fix the problems there have been over 230 at my dealership alone.

(There are two gaskets - get them both done.)

- , Mokena, IL, USA

problem #3

Dec 142006

(reported on)

Century LX V6

  • Automatic transmission
  • 80,000 miles

My low coolant light has been coming on for about 3 years but I could add coolant and it would go off. About a year ago I started smelling something that smelled like coolant burning. Also my service engine soon light started staying on. Also this is a problem with 2 other family members. Anyway I took it to a mechanic and he discovered it was the intake manifold gasket. He say thes were very poorly made. The service engine soon light was the oxygen sensor gone bad. Which causes very poor gas mileage and I'm not sure what else this affects. All I know I won't own another Buick. Also machanic said that the leaking coolant could have caused the oxygen to go bad. All I know is that I want to buy another car but after the repair bill I can't afford to at this time.

- , Union, MS, USA

problem #2

Oct 232006

(reported on)

Century Custom

  • Automatic transmission
  • 52,000 miles

I'm replacing the manifold gasket a second time. The first time was at 52,000 miles and the job was done by Jeffrey Buick. Now again at 120,000 miles I'm told it's the maniford gasket again. I took my car to Jeffrey Buick because the temperature gauge was almost in the red. After they had my car all day, they called me to pick up my car saying they could not find a problem. Now I'm being told it's the maniforld gasket again. I think Jeffrey Buick knew what the problem was all along. The manifold gaskets and Dexcool appear to be an on-going problem. I understand in Canada there is a class action suit in the works.

- , Warren, MI, USA

problem #1

Nov 232005

(reported on)


  • 53,000 miles

My mechanic looked at the vehicle and discovered that the intake manifold and valves were leaking coolant into the oil pan. An auto parts store owner across the street from the auto repair garage stated that he sells 10 intake manifolds per week due to the same problem. In my opinion this is definitely a quality control fiasco of Buick's that the general public will become aware of in the near future.

- , Hazel Park, MI, USA

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