Part # for dist Cap on 3.1 Buick Century - Century Buick Cars & Trucks

https://www.youtube.com/watch?v=TBgp7gyyyrI

The firing order is, 1 8 4 3 6 5 7 2
Odd and even numbered cylinder banks. driver side bank, front to back, 1 3 5 7
passenger side bank, front to back, 2 4 6 8
Dist rotor rotation, clock wise.
If you put number one cylinder on tdc of compression stroke, then whichever sparkplug tower the rotor is leading into, in the proper direction is number one. Then you follow the firing order in proper direction around the cap.

Make sure it's not you fuel cap reset code after clean and inspect fuel cap for leak

age is showing cause some electric is heatng up-a relay--solenoid--switch etc--you need a diagnostic test-1st a scan then maybe inspection of wiring with instruments--------make sure uve done a tuneup-new dist cap and plug wires

If you are getting a code saying that there is a problem with your evaporative emission control system, it is often related to the gas cap. In many cases replacing the gas cap will fix the problem.

Center cap pops off. then there is a "special" tool to remove the bolts that hold the hub cap.

HI. The cap will be 4 1/2 Quarts. That will include the filter as well.

look in the center of the firewall behind the engine for a black cap that looks like a tire valve stem cap ,......only larger

Get a reman.distributor to fix.