2.0 Timing Chain Problem at 61,000 Miles?

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12-04-2017, 08:12 PM

#81

donbrew

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Join Date: 01-23-2009

Location: Fredericksburg, Virginia

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It goes to the expansion tank on Cobalt. Can also be used as a bleeder valve.

12-04-2017, 09:31 PM

#82

RJ_RS_SS_350

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Quote:

Originally Posted by rlee63a4

What is this? I've seen photos of Cobalt SS 2.0s with a hose connected and running to somewhere on the driver's side of the engine compartment. There was nothing connected when I pulled the air box off to do the timing chain job, and I haven't found a photo of an HHR SS 2.0 with the air box removed to compare.

Same as mine. I've got several pics here in the shell blast thread https://www.chevyhhr.net/forums/how-...lves-ss-56184/

12-05-2017, 02:49 PM

#83

rlee63a4

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Join Date: 07-06-2011

Location: Bellbrook OH

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Quote:

Originally Posted by RJ_RS_SS_350

Same as mine.

So, why don't we have a hose connected to it? It must be blocked off on our engines such that coolant doesn't come out like in the Cobalts, Soltice and others I've seen used to bleed air out of the system by removing the hose.

12-05-2017, 03:25 PM

#84

donbrew

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Join Date: 01-23-2009

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I just figured it out! That is where the third leg of the air filter housing wold fit on a 2.2L; the one nobody can figure the correct size grommet.

12-05-2017, 03:40 PM

#85

Oldblue

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Nope, that’s not it

12-05-2017, 03:53 PM

#86

donbrew

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12-05-2017, 04:18 PM

#87

Oldblue

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The black stud is for the OEM airbox.
The silver bolt between the hose is the plug for the coolant system

Here’s a better view

12-05-2017, 05:31 PM

#88

donbrew

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Join Date: 01-23-2009

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And it looks even better, the SS has a longer neck, the "thing" is centered behing the pressure cap.

12-05-2017, 06:15 PM

#89

firemangeorge

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Join Date: 12-06-2009

Location: Alabama

Posts: 11,097

Well thanks for nothing guys.

Went out and snapped a picture of mine. Apparently I've got a little oil seepage
from the valve cover.
(But. May not have noticed the leak if not for taking the picture)
What that "thing" is, I now don't care because now I've got the oil leak to fix.