Mondeo 2011 Turbo Diesel lack of power

[JustBill]

Originally Posted by Citroënbender

The chain coloured links can be a bit of a distraction, the main requirements are - as you say - for the belt timing points to be lined up and crank bolt “FT” with thread locker, and the chain sprockets to be synchronised. If they’re out of sync now it’s probably due to the interference event which broke the rockers.

On the cam driven by the timing belt, I’m fairly sure both the belt pulley and chain sprocket are positively keyed; they cannot rotate.

The FAI brand rockers used to be a good aftermarket part for these situations, it may be they’re either much dearer or unavailable now.

Note on the crank bolt. Its torque is given in Nm only, which suggests to me the “always fit a new bolt” rule is driven by thread lock paste or granules pre-coated onto the bolt. If it were a TTY bolt it would have a preload torque plus degrees cited.

Breaking bolts or damaging threads on removal is usually the result of people not having the patience to walk the thread in and out, loosening it progressively.

Gotcha

Re Cam bolt, i've been watching Allan Howatt videos a lot. He reuses the cam bolt.

This is where i am at now.
-Flywheel locked in position.
-8 New rockers placed
-the area cleaned from rocker metal fragments.

Next Stage
-Fit the 2 cams with chain in correct position as per the diagram in my previous post (mark on intake cam pointing 12 oclock - mark on exhaust cam pointing 11 oclock)
-Place the cam belt sprocket in correct position making sure the hole in the sprocket lines up with hole on the engine.
-Place the timing belt and tensioner back on.
-Then remove the pins and by hand spin the crank 2 rotations and check if both flywheel and cam pully both line up again and able to pin them again.
All this before putting the rocker cover on making sure the marks on the cam sprockets also still line up at 12 oclock and 11 oclock. At the same time making sure nothing is hitting the rockers or valves while spinning. Any resistance or knocking sound while hand spinning would be a warning sign i don't have things right.

Make or break time..... Literally

[Citroënbender]

I’m relieved it’s coming together. Be sure to hit that torque - with thread locker - before your test turnings-over.

We did some bolts yesterday on a truck head that were 59Nm plus 90° plus 180°. It’s disconcerting to both consider how far you’re twisting it and how tight it’s getting - but evidently parts are designed to take the stresses. You should “overpull” slightly on the 60° as the bolt will naturally spring back.

[Citroënbender]

Also, are you sure the rockers which didn’t break, aren’t fractured? It’d be disappointing to find out later.

[JustBill]

No thats it. I quit. 4 weeks of killing my self pulling things apart and lots of money spent, i quit.

I put it all together, try spinning it 2 revolutions but turns only 1/4 and locks up. The cam spins independantly as many times you like, so does the crank. but put them on the belt 1/4 turn. These have been up there with the worst period of my life.

Thank you citroenbender and the rest of you for giving me your precious time.
i can never repay yous for what youre worth.