2008 hhr ss not making boost
05-21-2017, 03:47 PM
#21
Senior Member
Join Date: 06-07-2011
Location: SE Mich
Posts: 2,180
Um, 20 psi is too high for stock setup.
How many miles? Mine did that after jumping timing, and shortly before blowing. You should see 17 max. If you see 21, it's a red flag.
You might want to get your timing checked. Soon.
How many miles? Mine did that after jumping timing, and shortly before blowing. You should see 17 max. If you see 21, it's a red flag.
You might want to get your timing checked. Soon.
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engimuneer
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07-21-2015 10:34 AM