Final Start Attempt and PCM Retuning Plan

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21:40

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JH Diesel Flipped His MegaTruck Into Cleetus' Pond...Now We See If It Runs! (6.0 Powerstroke)

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What happens here

After replacing the PCM, the team attempts to start the engine again. The engine cranks, producing white smoke, but still does not fully fire up. The mechanic notes that the replacement PCM, while functional, needs to be 'tuned' to match the larger injectors installed in the modified engine. Without the correct tune, the computer is dumping raw fuel, preventing proper combustion. He acknowledges running out of time for the day but expresses confidence that the truck will start once the new PCM is properly tuned. The truck is confirmed to have a performance-built engine from Warren Diesel, a performance transmission, a Fast Fuel System, Snow Performance water-meth injection, and a larger 72mm BorgWarner turbocharger, all contributing to its power but also requiring precise tuning.

Goal: Get the truck to start and run properly by tuning the new PCM.

Tools and materials

PCM Tuning Software — Reprogramming the new PCM to match engine modifications
Specialized Diagnostic Tools — Monitoring engine parameters during tuning

What they say

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back up coolant never drained or got anything in it so cool it was great so you filled the crankcase with diesel we got three and a half four gallons of diesel fuel in the crankcase let it sit in there just so stuff wouldn't rust turn the motor over with it pulled all the glow plugs turn the motor without hosing it we put the glow plugs back in now are you ready to fire let's find out if it does hey i could have a bad pcm bad fuel injection module did sit in water for 24 hours so it does uh this reverse light here has been on yeah it stays on so i'm not sure what's going on there

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