There isn't a specific "3100 motor" in a Chevy Lumina. However, the Chevrolet Lumina was produced with various engine options, and one of them was the 3.1L V6 engine, often referred to as the GM 3100 engine.
The 3.1L V6 engine typically had six cylinders arranged in a V-shaped configuration. If you are referring to a different engine or if there have been changes or updates to the model since my last update, it's recommended to check the latest specifications in the owner's manual or contact Chevrolet or a certified service center for the most accurate and up-to-date information.
How many are in the 3100 motor in a Chevy lumina
SOURCE: where can i find a
You can find an basic explanation of automotive cooling systems here. Please note that there are several pages (look for the Next Page link). The third page has a nice, interactive motion graphic.
SOURCE: firing order and camshaft sensor for a 96 chevy lumina 3.1 v6
Here is a diagram of your motor with the firing order:
SOURCE: 1996 chevy suburban engine diagram
I have the diagrams. Send me your email and I will send you what you need. [email protected]
Send all pertanent information for you vehicle such as eng size, make, model, Weather it is a C1500, C2500, K1500 or K2500.
SOURCE: 3.1l engine heads diagrams
If the hole is not used for anything find a bolt (tried hardware store etc?) If you definitely are not going to need it, worst case, tap the hole to a slightly larger size.(one you do have) Wrap the bolt/plug you use with teflon tape or use sealer on it so it does not leak.
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