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Thread: Astra Coupe Turbo Engine Probs

  
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    R-Turbo's Avatar
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    Astra Coupe Turbo Engine Probs

    Got 02 Opel astra coupe turbo--- love the car pretty quick sounds like a diesel tho--really knocky engine is this normal dealer tells me they are all pretty tappity but im not convienced???

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    Manch's Avatar
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    Could be a cambelt roller or water pump if it is that bad, without hearing your engine its pretty hard to say though because the Z20LET aren't super smooth engines when idling.

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    Both the 2.2 and the turbo have a bit of a diesel sound when idle ..... especially if you got a open airfilter .....
    TechWolf - Astra Coupe Turbo

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    They are all pretty tappety. At idle, as Manch said, they are not that smooth. Under moderate acceleration they sound smooth, and extremely quiet at cruising speeds. However under full acceleration they can sound a bit rougher again, a bit snarly which you may be interpreting as knocky or diesel like. Some of the noise you are hearing may also be intake noise as even on a standard non-modified car, at certain levels of acceleration, the standard airbox design does not do a perfect job of silencing all the noise as air passes through the air filter.

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