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Discussion Starter · #1 ·
Hi all,
I have recently discovered that my astra 1.7 has a strange knocking sound when i push the accelerator pedal down, this only happens when it is in gear, knocks only once each time i push the pedal down and doesnt knock again until i completely take my foot off it and push it again, its sounds like its coming from the middle of the engine i have no clue what it could be, happens in every gear as soon as it gets a little bit of power, has no effect on the power or drive off the car, just wondering what it is as its really annoying haha, any help would be highly appreciated thank you :)
 
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