R50/R53 :: Hatch Talk (2002-2006) Cooper (R50) and Cooper S (R53) hatchback discussion.

R50/53 MisFires MisFire MisFire

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Old Jul 23, 2016 | 10:44 PM
  #1  
Apollo_33x's Avatar
Apollo_33x
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MisFires MisFire MisFire

Fellow Minians, i need your help
i have a 04 MCS 140K on the Dash
im getting the following codes
P0300
RANDOM/MULTIPLE mISFIRE

P2096
POST CATALYST FUEL TRIM sYSTEM TOO LEAN (BANK1)

P0301
CYLINDER 1 MISfIRE

P0313
mISFIRE DETECED LOW FUEL


where would be a good place to start for this issue its starting to get aggrevating
 
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Old Jul 24, 2016 | 09:22 AM
  #2  
Da_Ghost's Avatar
Da_Ghost
5th Gear
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From: Québec, Canada
Since you're getting a low fuel code, I'd check the fuel pressure and do a compression test as well. Low fuel pressure could cause your lean condition, as well as misfires. I'd start there to eliminate those and by doing a compression test, you'll be able to check the plugs while you're at it.
 
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Old Jul 24, 2016 | 03:41 PM
  #3  
Apollo_33x's Avatar
Apollo_33x
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iight thanks Da_Ghost i just pulled plug #2 and theres oil on the plug and on the piston head.... Plug #1 is slightly seized, just sprayed carbon clean it to soak for a little bit.
did some research on oil on spark plug but not too much came up about fixing it. any ideas?
 
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Old Jul 25, 2016 | 04:49 AM
  #4  
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ZippyNH
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From: Southern NH
Can you post pics of the sparkplugs?
It could be just too cold of a plug, or a byproduct of the misfire, or even bad gaskets on the valve cover...
My gut says you fuel pump might have a low psi and the plugs are dirty as a result of a misfires...
I would see if you can borrow a fuel psi tester and plug it into the rail (under the intercooler there is a valve) and check it out.
 
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Old Jul 25, 2016 | 11:50 AM
  #5  
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Apollo_33x
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Thanks ZippyNH
So i took a second look at the #2 spark plug and the helicoil came out with it.
the #1 SP. is stuck and is currently being removed with the tighten then loosen method. My plan is too first remove sp #1 then try to reinstall a coil in #2 SP hole.
(My question with that is, Because i removed the old helicoil do you think i be able to reinstall one?)
after that ill be doing a fuel psi test to determine if it is a failing fuel pump. fuel filter or if its an electrical problem
then ill do the compression test
 
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