I just replaced my idler, tensioner, drive belt, and damper with a solid crank pulley.

Car still ran before the work but was throwing a code before I started....forgot which but I will try to find it. Idler and tensioner were both bad and car limped home.

Sounded like the valves and pistons hitting each other when started. No codes returned

Hunting desperately for a how to on doing a compression test on an r53.

Assuming stop fuel supply and stop spark?

Any ideas?

No codes being thrown now.

 

Started up. Pulled the plugs and cleaned up. Maybe they fouled. Crap like this gives me bad memories of other car chapters.

From cylinder 1-4

Cold compression numbers with no throttle applied.

135 140 140 145

 

Solid dampeners are not dampeners at all and not a good idea on a Mini! (crank pulley) It can cost you an engine.

 

Are you saying that this might have been the root cause of my problem here? I wouldn't expect any difficulties for quite some time if at all by going to a solid crank pulley. I searched here for days before reaching a cost/benefit decision in my case. I wouldn't think that installing a solid crank pulley would cause an immediate issue.

 

No, but what I am saying: The aftermarket solid crank pulley can cause vibrations, that can blow the oil pump and timing gear on the crank to break the internal front cover parts.

 

My thought on this is.......if a solid crank pulley is OK on a "S" engine...why didn't the factory use them?

The engineers weren't dumb....they knew what worked and what didn't

Bryan

 

Roger. The post has really begun to drift off topic though. I have read the numerous threads arguing back and forth, but the car starts and runs so this thread can die now.

 

I beg to differ. Someone may stumble upon this thread and think "maybe I too should install a solid crank pulley." What we are asking is, what search logic led you to the conclusion that notwithstanding what the BMW/MINI engineers had decided by installing a damped crank pulley, an aftermarket solid pulley would be better?

 

If someone wanted to do that, then they could hit the search button and run a query just like I did. The same applies to you. A cost/benefit analysis is relative to each person and as the old cliché goes, "it is my car".

Don't be a concern troll.

 

To the OP, would you mind telling us what the cause of the "no start" was and what you did to rectify same?

 

Unsure of the root cause. When checking compression, I pulled the plugs and noticed that they were fuel fouled. Definitely a symptom, but not the root cause. No codes. The car had been sitting for a while.