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Timing Tensioner Iron vs Plastic
Posted to Technical Discussion Forum on 1/3/2016 15 Replies

Why did Ford change the composition of the timing chain tensioner from iron to plastic from 01-02 ? The 2001 has a ratchet that holds chain tension with no oil pressure (fail-safe if OP lost). 2002 model oscillates the chain against plastic guides at every restart until OP is gained.

I have interchanged the tensioners both years and the only noticed difference is the seal on the plastic ones fail early. The iron tensioners do not have a gasket but I did not notice oil loss around it while idling with timing cover off. Perhaps at high RPM's they spray off pressure like the oil pumps do. What are your thoughts??? [...]

Jesse East
Pepsi Transportation
Roanoke, Virginia, USA

15 Replies Received (View Replies)


car Vehicle Data

2001 Ford F-250 Super Duty XLT 5.4L

Engine5.4 L
Trans6-speed Standard