Modern American made engines can run several hundred thousand miles if properly maintained.
Follow the manufacturers specifications and use high quality lubricants, coolants and replacement components and your Buick and other American cars will last a long time.
... There is no carburetor in a '01 Buick... the last Buick to use a carburetor was in 1990. If you are talking about the throttle body, however, there is a butterfly valve inside, but the only way to get to it is to remove the throttle body.
Timing chain......will last life of the vehicle. Chains are better than belts anytime.
It has a timing chain that should last the life of the engine.
The engine main and/or rod bearings are worn. Change to a heavier grade oil (higher viscosity number) and the light should stop flickering so much. If you do that you can make the engine last a little longer, but the engine is definitely getting tired.
Look in the glove box; One of the last characters is PNT (paint) WAxxxx, write all those numbers down and bring them in then you will figure it out.
First make sure you have a clean air filter but I suspect you have a fuel sensor not working as well. When was the last time you had a tune up? Has your check engine light come on and if it has you need to get the codes read in your car's computer.
The 1999 Buick Century Glove Compartment Manual on the inside of the last page shows: Crankcase (Engine Oil with filter change) 3100 Engine 4.5 quarts (4.3L)
The 3.8 liter V6 engine in a 1991 Mercury Cougar has a timing CHAIN
Assuming a 3800 (3.8L) engine, it has a timing chain which, with a little luck should last the life of the car/engine.
No, and it was not even made in 1987. Production was from 1988 to 1991 when the last one was made.
the last production year for the iroc z was 1990, there is no such thing as a 1991 iroc z
fuel pump