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hello, my car is suffering from a lack of power, would anyone know what the correct partial load readings should be on a Vauxhall zafira 1.6 petrol 2007 (z16xe1), I've attached a snapshot of mine, thanks
 

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looks fine as on idle pressure is atmospheric (around 20kpa)

chould change upon revving as a vacuum is created
 

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Tigra Twintop 1.8 AT Z18XE AF17
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102 kPa or so its atmospheric in vauxhall terms. That engine is at 2402 rpm so where do you see idle?
You can't qualify partial load map sitting on 0 km/h.

If you want to see how difficult it is to quantify engine breathing, check Automotive Solutions youtube videos.

I would look more to fuel trims to understand what the engine does.
 
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