Misfire code, car shaking a little

Tiny
DANA ALMOKDAD
  • MEMBER
  • 2008 MINI COOPER S
  • 1.8L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 130,000 MILES
Cylinder four compression is 70.
All other cylinders between 90-95.
The car misfiring after head gasket job.
Timing chain kit has been replaced.
There is a tiny space between the camp exhaust locking tool and the camp intake.
Sunday, March 3rd, 2019 AT 9:18 PM

2 Replies

Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello,

It looks to me like compression is low in all four cylinders. I have included a compression pressure chart for your vehicle down below in the diagrams. Your vehicle should have between 130 - 195 PSI in all cylinders. As a general rule of thumb, compression in lowest cylinder shouldn't be less than 10% of the highest cylinder. I have also included a link for you down below. Please go through all the information and get back to us with what you find out.

https://www.2carpros.com/articles/the-reasons-for-low-compression

Thanks,
Alex
2CarPros
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Sunday, March 3rd, 2019 AT 10:43 PM
Tiny
JIS001
  • MECHANIC
  • 3,412 POSTS
I agree. All cylinders read really low? Where did you get your compression guage from? Also, can you provide the exact codes? With those readings I am surprise your vehicle even started? Let us know please.
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Sunday, March 3rd, 2019 AT 11:01 PM

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