Five problems related to manifold/header/muffler/tail pipe have been reported for the 1998 Buick Century. The most recently reported issues are listed below.
The gasket has to be replaced. Anti-freeze leaked from the top, and dripped down onto the engine. However, took vehicle to dealer several times. The leak has not been found.
I own a 1998 Buick Century custom that I purchased new. My husband and I take good care of our cars; always do all the recommended maintenance. In February, our intake manifold gasket was replaced due to a leak and the car only had 76,000 miles on it. This cost us over $900. My husband has searched the web and found hundreds, if not thousands of similar complaints from other Buick and gm product owners. Many are forming groups and filing petitions and class action law suits. My grandfather and uncle were car repairmen in the '70's. Even back then, it was unheard of to have intake manifold gaskets replaced. This is clearly a defect that gm needs to own up to. Please pursue gm through whatever channels you have to make them pay for this problem and fix it. I have heard of a few lucky folks who are getting reimbursed, it should be for all of us.
After noticing a few drops of dexcool coolant on the garage floor, I checked the reservoir. It was empty. I checked for leaky hoses or clamps, then noticed that around some gasket I could see where coolant was obviously oozing and some had pooled in a recess in the engine mold. Anyway, I refilled the reservoir with dexcool and took the car to a local repair shop before doing any damage. The repair bill came to over $900. The car is only 5 years old and it needs a new intake manifold gasket, how absurd. After surfing the web, I find that others have had fires and blown engines from the same problem. We were lucky, but my wife and daughter travel the local highways alot, what if they ran out of coolant while driving and the engine siezed, possibly causing an accident or at least stranding them. (3. 1l v6).
Oil is leaking on the driver's side of the engine towards the firewall, cause unknown. Dealer replaced the leaking lower intake manifold gasket, and resealed oil pump which has not remedied the problem. Please give any further details.
The intake gasket leaked antifreeze. Dealership replaced the gasket, but problem recurred within 23,000 miles. GMC consumer representative informed the consumer of a recall on this issue, but consumer's vehicle was not included in the recall due to VIN. Recall not found in artemis.