Loud ticking noise in backside of engine 2015 Cruze LT

13616 Views 2 Replies 3 Participants Last post by StormShepherd, Sep 10, 2017

Drape28

Discussion Starter · Sep 10, 2017

I noticed this tick be often thinking it was just my injectors doing what they do. But it's getting very loud now and starting to cause concern. I literally just had it at the dealer yesterday for a different problem and they didn't say anything about this. Can anyone easily diagnose this from the video below?

https://m.youtube.com/watch?v=pVx8wlXLlVc

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jblackburn

· #2 · Sep 10, 2017

EVAP purge valve needs to be replaced. Round canister on top of the intake manifold. $20 and 5 minutes of your time to change.

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StormShepherd

· #3 · Sep 10, 2017

jblackburn said:
EVAP purge valve needs to be replaced. Round canister on top of the intake manifold. $20 and 5 minutes of your time to change.

This. Lots of GM cars make this noise. The 1.4 REALLY doesn't like vacuum leak issues, and the Purge sticks open, and makes that noise. For absolute certainty of this, unplug the purge valve, take it off, and try blowing through it. If you can blow through it, the valve is stuck open. When idling, the purge valve defaults to about 15% duty cycle, so has to be unplugged to perform this test.

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