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From the 3.0L Coffee Table Book:
Font Motor vehicle Engineering Automotive tire Machine
 
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Discussion Starter · #12 ·
How many kms? This code often comes in when timing chains stretch and the cam/crank are no longer timed they way they should be. In this engine, I'd be concerned about the timing belt. This assumes your replacement crank sensor is a good part.
So ford said low compression in cylinders 1,3,5. Could a timing belt cause this?
 

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It certainly could. I really don't have a good answer as to why those specific cylinders have low compression (front and rear on passenger side, center cylinder on the driver side). If the engine went out of time, valves will strike pistons, bending valves. Bent valves will not seal, causing low compression. I hope you are under the mileage limit for the engine (160,000 km in Canada?), as this will be expensive.
 

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Discussion Starter · #14 ·
It certainly could. I really don't have a good answer as to why those specific cylinders have low compression (front and rear on passenger side, center cylinder on the driver side). If the engine went out of time, valves will strike pistons, bending valves. Bent valves will not seal, causing low compression. I hope you are under the mileage limit for the engine (160,000 km in Canada?), as this will be expensive.
There is 284,000 km on the truck. Hopefully it’s something else. They thought this engine was a non interference engine but maybe not
 

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That's likely your answer then. The specified interval for timing belt replacement is 240,000 km (150,000 miles). Given that the engine was still running, the belt likely stripped several teeth off
 

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2022-2018 = 4 years (I got mine in September 2018)

@Mikejobrien definitely holds the record here in the forums...

Lesson learned: Timing belt replacement at 150K miles is required!
 
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