3.6DI Injector noise pattern
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2008-2013 Cadillac CTS General Discussion Discussion, 3.6DI Injector noise pattern in Cadillac CTS Second Generation Forum - 2008-2013; What is a normal noise pattern for a 3.6DI? My experience with GDI motors is limited to this one engine, ...
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    Cougar281 is offline Cadillac Owners Fanatic
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    3.6DI Injector noise pattern

    What is a normal noise pattern for a 3.6DI? My experience with GDI motors is limited to this one engine, and I know they sound different than SFI motor. The reason I ask is mine has a pattern that may or may not be normal. It has a louder tick at regular intervals that sounds like it's once every cycle, as if there's something different about one injector, and every time it fires, it sounds different than the other 5 injectors. Does this sound normal, or does it sound like there may be something up?

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    C "T" ess's Avatar
    C "T" ess is offline Cadillac Owners Connoisseur
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    Re: 3.6DI Injector noise pattern

    It's the fuel pump ticking which increases as revs increase. You get used to it. Turn the radio up a bit.

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    Cougar281 is offline Cadillac Owners Fanatic
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    Re: 3.6DI Injector noise pattern

    It doesn't bother me and from inside, I can't hear it at all. Just from outside. Was just curious about the one tick that's louder than the others.

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    SC2150's Avatar
    SC2150 is offline Cadillac Owners Connoisseur
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    Re: 3.6DI Injector noise pattern

    The injectors will also hammer pretty loud as they are working with app. 2000 PSI. We see very few failures, and it is normal.
    RX Performance Products/RevXtreme.com 941-721-1826

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