Hello this is my first post. I've been doing some heavy digging and cannot find info on my specific problem.

I have a 2010 Mini Cooper S N14. I just did the timing chain as I was hearing the typical harsh noise on cold start. Turns out, my upper guide had broken.

I dropped my oil pan and replaced the timing chain. After torquing down bolts and going to check timing the chain will not turn.

Let me verify. When I turn the engine by hand I have no problem (plugs are out so no compression). As I turn the engine my cams and timing chain refuse to budge.

Am I missing something crucial?

 

Hmmm....it's hard to tell without a video, but is it possible the crank bolt snapped? Or is it possible your using a bigger socket? Did you remove all your locking tools?

 

I've used 2 bolts (since stretch bolts and 1 time use). The 1st was fine after I removed it. It doesn't seem to be a broken bolt. I'm using an 18mm socket and all the locking tools are off.

 

Could you upload a video? If everything is tight to spec, all should be moving together or all are locked. Or the wrench lost its grip.

 

I will try. I'll have to edit the video for file type.

 

Just got an idea, drop two long straws to see if the pistons actually turn too.

 

I just checked with zip ties and yes the pistons move up an down

 

Huh...this is sooo weird! Something is definitely not sitting right!!

 

Here's a video

 

Not attached.

 

It will not upload

 

https://www.youtube.com/watch?v=e89n...ature=youtu.be

 

When you said the timing chain wont budge, is that when you try to turn it from the cams?

 

I can turn the cams by hand but they will not budge when the engine is turned over

 

Hummm...maybe at that point, the pistons hit the valves. Double check the timing.

 

Is there a specific way to check the timing at this point?

 

Spin the crank and lock it with pin. Observe the cams orientation.

 

The cams are set as they were when I removed the locking tool. They don't move when the crank does

 

Can you attach a picture of your set up.

 

It sounds like your crankshaft sprocket is not moving with your crankshaft. Your pistons are moving while turning by hand which means your bolt and crankshaft assembly are all working. If the top end is not working, the place these two meet is the crankshaft sprocket. I would check to make sure this part of the job was reassembled correctly.

 

I'm fairly certain this was caused by the hub. I pulled out the hub had to fight it off the timing sprocket. I checked it against the old sprocket and it seems slightly mushroomed.

I ordered a new hub from ecs. Hopefully this will solve my problem

 

Here's a pretty good procedure for replacing a timing chain --- https://www.newtis.info/tisv2/a/en/r...aft/1VnY7d2Xnh browse thru it to ensure you've done all the right stuff and in the correct order. It also has a method to verify timing is correct after initial setup.