what's the proper procedure & spec's to check fuel pressure on an 04' MCS, having midrange hesitation. checking basic's first.
Thanks in advance, Jeff

 

3.5 bar (+-50 PSI) on a Cooper S

 

Is this a static test or engine running test?
Thanks

 

I have no real answer for ya buddy.

I have heared that it's supposed to be 43psi and rise 1psi per 1psi of boost.
My AutoMeter gauge shows 60psi constant, I might have a problem with the gauge or the fuel pressure regulator though.

 

That was directly from the Bentley manual. According to that it should show 50 +- 3 psi when running for S and 43 +- 3 psi on coopers.

 

Thanks to all who replied. I'll sort this out next free weekend I have.
Jeff