I bought this car and got burned on it badly
Hole in #4 piston as the previous owner did not do any plug maintenance
Swapped in a replacement motor fro JY( Engine #2) Paid a shop to do this as I had no time or place to work on it! It cost me a bucket full of $$$$
That motor lasted 5 weeks and spun a rod or main bearing. It had a 90 day warranty. I have taken it back now and got my money back!
We pulled Engine #1 apart to find the original problem and see what the damage was.
Piston had a hole 3/4 inch across the top of the piston. Cylinder wall is scored bad enough that honing it will not fix. Figure junk the block!
Engine #3 found at a local JY. Engine #3 came out of a 95 Riviera Vin1 Series 1
This time It is me and the brother in law(Recent Retired millwright) acting as the Mechanics. (Heavy on the acting part!)
We pulled the pan and UIM and LIM and took a good look at Engine #3
Looks good installed new gaskets did a leak down Cylinder test.
Last night I finished putting it all back in the car.
Car is still on jack stands and passenger side tire and splash guard are still off so I can look underneath easily.
I swapped the wiring harness from what was on the Bonneville Engine #1 to #2 to Engine #3. Only other parts swapped over where */C and the OIl filter adapter as the Riv did not have the Engine Oil Cooler lines
We cleaned up everything we could on this motor as we went along.
I am thinking I will check the harness connections at the firewall first
Next the ignition coil pack connections and grounds.
Will Crank /Cam sensor give you a no start?
We did not swap them over from Engine #1 so I have spares so to speak.
I have fuel in the fuel rail so that really leaves ignition or a sensor issue right?