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G60 pinking - few queries

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My G60 is pinking and I have found a checklist to go through from a previous post: http://the-corrado.net/.archive/forum/viewtopic. ... g&start=15

 

Believe I will need a new knock sensor and to check the wires. At the moment the timing is set to 6 degrees at the flywheel and the CO Pot is set to 480. Pinking seems worse when on boost (a lot worse) but cannot tell when it stops - after about 3.5/4k I can't hear much else other than charger and exhaust - but am certain I have heard it before over that at least once. A new lambda was put into the front pipe 2 months ago - Bosch universal one - has the 4 leads. Cars performing fine I think - gets full boost on std charger/pulley and reaches top end speed no probs. Anything else I should be checking/considering?

 

Another problem from what I have read might be associated - the car jerks when accelerating and decelarating around 1.5/2k - I have read people having to replace full pumps/filters when dealing with pinking. Something I should consider?

 

Any help appreciated as I am dying to get this sorted. Thanks

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It is wise to run G60's on the best fuel available to you, 98 RON is preferable. You need to get your fuel pressure tested to eliminate/point the finger at your fuel pump. Pressure at idle should be around 38psi, instantly rising and holding to around 55-60psi on boost and not dropping back from the peak pressure as the RPM's increase.

 

Fuel pressure is tested with a suitable gauge tapping off where the end of the fuel rail where the fuel pressure switch is normally plumbed into.

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ok it works then :) friend set up the timing a few weeks ago and it was plain as day it made a difference when this sensor was out. cheers!

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