[clarkkent]

Sorry, you have put a 2.5 petrol engine converted to gas in the FL1 ?

 

[Nodge68]

Well, $700 and a refurbished and coded ECU has not fixed my problem yet. Still have to cycle through the other 3 positions on the flexplate to verify for sure. Assuming still no luck in the other 3 positions, does anyone have any other suggestions other than selling or scrapping this project? Thanks!

It's not the ECU causing this. They are almost bomb proof It's a sensor fault or timing issue. The crank sensor has to pick up a correctly timed signal for the ECU to start the engine. As the drive plate (flex plate) has been separated from the CT, I still maintain, it's not been put back into the correct position. There are on 4 possible locations, but only one will run the engine.

 

[Nodge68]

Sorry, you have put a 2.5 petrol engine converted to gas in the FL1 ?

The OP is from a location where petrol is known as gas.

 

[Alibro]

I'm not familiar with the V6 but was the engine running before it was removed? And if so was any work done to it before it was installed?
I had the same symptoms after replacing the timing belt on my 1.8. Turned out when replacing the pulleys on the crankshafts I fitted them wrong as I didn't realise they can be fitted as exhaust or inlet. There is a little pin which needs to in the correct position when they're fitted.
Thankfully it did no harm and after refitting them the car started first turn of the key.

 

[Nodge68]

I'm not familiar with the V6 but was the engine running before it was removed? And if so was any work done to it before it was installed?
I had the same symptoms after replacing the timing belt on my 1.8. Turned out when replacing the pulleys on the crankshafts I fitted them wrong as I didn't realise they can be fitted as exhaust or inlet. There is a little pin which needs to in the correct position when they're fitted.
Thankfully it did no harm and after refitting them the car started first turn of the key.

The V6 doesn't have IN / EX pins like the K4. It's possible to time the cams very wrong indeed as the cam drive is completely adjustable. I'm guessing that the engine would have been running before it was removed from its previous car. The drive plate that couples the crank to the torque converter can be fitted in 4 different locations, 90° apart. Because the crank angle sensor reluctor ring is on the torque converter, it's very possible to have the timing 90, 180 or 270° out. I still maintain my original idea that this is the problem.

 

[clarkkent]

The OP is from a location where petrol is known as gas.

Not near Newquay then