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R56 How to turn off fuel injectors to perform compression test?

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Old Oct 29, 2014 | 11:59 AM
  #1  
hudub's Avatar
hudub
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From: San Diego, CA
How to turn off fuel injectors to perform compression test?

I am trying to do a compression test and want to turn off the fuel injectors. I think I need to pull a fuse to do this and according to: https://www.northamericanmotoring.co...not-fuses.html

I just need to remove the F68 fuse, which I believe is located next to the battery. Can anyone verify
 
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Old Oct 29, 2014 | 12:54 PM
  #2  
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EuroTechsAZ
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From: Tempe AZ
Just turn the engine over using the starter connector on the right side of the engine bay firewall. Jump the white wire to power and it will crank. Make sure you are in neutral if a manual transmission.
 
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Old Oct 30, 2014 | 02:03 AM
  #3  
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Systemlord
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From: Mission Viejo, CA
Make sure you have the pedal to the floor to open the throttle plate. The only thing I have ever done is disconnect the coils, 5 seconds cranking per cylinder is all it took to get reliable readings. That's 20 seconds and your done, it doesn't have to be a chore.
 
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Old Oct 30, 2014 | 03:03 AM
  #4  
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r34king
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From: Clayton NC
Fuse 5 next to the DME is for the injectors. Pull it and crank away
 
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Old Oct 30, 2014 | 10:19 AM
  #5  
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Rich.Wolfson
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From: Northern New Jersey
Originally Posted by EuroTechsAZ
Just turn the engine over using the starter connector on the right side of the engine bay firewall. Jump the white wire to power and it will crank....
Is there an option like that on the R53?

///Rich
 
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Old Oct 30, 2014 | 10:26 AM
  #6  
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EuroTechsAZ
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From: Tempe AZ
Originally Posted by Rich.Wolfson
Is there an option like that on the R53?

///Rich
There is but it is not as easy. 1 wire in the large round connector on the drivers side harness can be jumped. I cannot recall the color at the moment but sure you can find it on the wiring diagram.
 
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