Drivetrain (Cooper S) MINI Cooper S (R53) intakes, exhausts, pulleys, headers, throttle bodies, and any other modifications to the Cooper S drivetrain.

Drivetrain Upgraded cam, now car will not start at all

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Old Mar 25, 2012 | 10:22 PM
  #26  
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Man i hope your engine is ok.
 
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Old Mar 25, 2012 | 10:54 PM
  #27  
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Still won't start
 
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Old Mar 25, 2012 | 11:48 PM
  #28  
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start looking at ignitions and fueling if you haven't done so.
 
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Old Mar 25, 2012 | 11:51 PM
  #29  
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Yea we did like all day
Spark plugs are wet from fuel
Also hear clicking from ignition...
I still think its either defective cam or sensor
 
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Old Mar 25, 2012 | 11:54 PM
  #30  
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put back the old cam and see if its going to start but before that look at the cam sensor for damaged pins.
 
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Old Mar 26, 2012 | 04:48 AM
  #31  
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Looks like we have no choice but I'm scared to since we have rotated timing 180 degrees..
 
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Old Mar 26, 2012 | 07:33 AM
  #32  
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Need moar advice!
 
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Old Mar 26, 2012 | 08:03 AM
  #33  
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Check the camshaft position sensor.
 
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Old Mar 26, 2012 | 09:28 AM
  #34  
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Looks like you were at this all night, and this kind of stuff nothing but sucks, the only thing you can do is, do your very best to get the timing lined up & put the stock cam back in, get everything running properly, and start over, from scratch. Sorry to say.

When we did my 1st cam we had compression issues due to the ecu not liking the cam & overfueling the cylinders, but never 0 in all, so yes I think you may have let the gear positioning get out of place.

Once you start from scratch.
-Place Cam tool & loosen bolt
-Remove tool, zip tie the chain to the cam in 2 places
-Pull the tensioner
-get a bunjie cord to hold the tension of the chain, attach it to the hood, pull the bolt & while keeping tension on the chain attach the other end to the gear. This will keep the tension & hold the gear out of the way at the same time.
-everything should then stay in place while you change the cam again.


**Make sure when replacing the old cam & reinstalling the new that not only do you have the cam caps in the correct order & that all of the lifter caps are in place, lifter caps can come off even right before you tighten the rocker rails just from the plastic cap holders heat cracking & becoming brittle.**
 
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Old Mar 26, 2012 | 11:56 AM
  #35  
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Turns out I got a call from autox and guy says there is a good chance the bottom sprocket came undone if we didn't apply pressure.. I'm trying to contact my buddies to see if thats what they did when they broke the bolt loose.. (I held the crank while they broke the nut loose)
If so we will have to pull the whole timing cover off.. I really dont wanna do that but I'm thinking we might end up doing that anyway
Firs thing I want to do is really do a thorough check of the sensors first since my instincts tell me it's that sensor... Like I said I don't think valves are bent since there was never any pinging or the fact that the car never started
 
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Old Mar 26, 2012 | 12:21 PM
  #36  
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If you used the starter to spin the engine with the cam out of time the valves are bent. They wont make any sounds when they bend and it only takes one time with the starter and its over.
 
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Old Mar 26, 2012 | 12:28 PM
  #37  
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But wouldnt the engine give resistance at the contact point with said valve? I spun the engine by hand several times before putting the cover back on
 
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Old Mar 26, 2012 | 12:34 PM
  #38  
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Nope the starter will bend the valves without even trying. If you spun it by hand at least 2 full revolutions and it didnt hit you should have been fine. Valves are not very strong.
 
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Old Mar 26, 2012 | 12:37 PM
  #39  
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Yea I turned the engine by hand several times (about 25 minutes) just to make sure nothing was contacting. Also the shop owner told me if the valves were bent it would make compression and it's not
 
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Old Mar 26, 2012 | 12:39 PM
  #40  
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All great advices and its just a matter of doing the easy steps to the more labor intense until it starts right. I would still undo everything you guys did n start from there if anything outside the cam swap has been checked.
 
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Old Mar 26, 2012 | 01:09 PM
  #41  
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Bent valves make 0 or very close to 0 compression. Piston engines won't run below 90psi of compression.

I totally agree with miles_miles7 you need to go back to start and retime the crank and cam with the timing covers off to make sure you have it right.
 
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Old Mar 26, 2012 | 01:40 PM
  #42  
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Did you take the ground wire off?
 
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Old Mar 26, 2012 | 01:48 PM
  #43  
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Ground wire is a good possibility of not starting.
 
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Old Mar 26, 2012 | 02:14 PM
  #44  
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If you get this straightened out & end up replacing the cam in one way or the other, GET THE CAM TOOL, you can rent it from some mini shops. Not using it may have caused your problems in the first place.
 
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Old Mar 26, 2012 | 04:34 PM
  #45  
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Update
Dropped car off at shop, next to another broken R53, he will let me know what happens, although at this point I really don't give 2 f*cks about that car or whats wrong with it.

I'm done.
 
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Old Mar 27, 2012 | 07:30 AM
  #46  
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i had the same problem in december when i put my rmw cam in.
the chain skipped some teeth on the crank sprocket and wouldn't run.

the only way to get it back timed right was to pull the timing cover. a big pain, but it gave me a chance to replace the gasket, upgraded the crank damper, the chain guides, tensioner, etc.
 
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Old Mar 27, 2012 | 08:42 AM
  #47  
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But how we're you sure you didn't bend valves? Did you turn motor by hand?
 
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Old Mar 27, 2012 | 08:47 AM
  #48  
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i did turn it by hand, which is the reason the chain jumped teeth... :-/

with the cam installed correctly, the car runs awesome, idles awesome and has zero performance issues for the last 8,000 miles that it's been installed. vacuum and boost is great and right in line with what it should be.

i was worried at the time that valves were bent, reading through threads on forums like you've been doing trying to figure out if it could be, but i ended up not having any problems :-)
 
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Old Mar 27, 2012 | 09:05 AM
  #49  
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The only way to know is to get it back in time, then do the compression check.
 
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Old Mar 27, 2012 | 09:07 AM
  #50  
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Originally Posted by BlwnAway
The only way to know is to get it back in time, then do the compression check.



this is true.
 
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