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10-02-2021, 03:49 PM | #1 |
Scooby Newbie
Member#: 192990
Join Date: Oct 2008
Chapter/Region:
MAIC
Location: Silver Spring, MD
Vehicle:2012 Impreza WRX Satin White Pearl |
Please HELP! What's going on?
2012 wrx. Car died on me yesterday, and I could not re-start the car. Brand new battery so I was thinking it was my alternator. Got the car towed home, replaced the alternator and got this noise while trying to jump the car.
Notably I was getting a similar rhythmic noise during my drive to work as well, but only while idling. When the car was cruising the noise went away but the car died on my way home from work. thanks for the help
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10-02-2021, 11:18 PM | #2 |
Scooby Specialist
Member#: 469585
Join Date: Jun 2017
Chapter/Region:
W. Canada
Vehicle:2009 STi White |
Hard to say for sure, but it also sounds like you’re down compression in a cylinder. Could be a rod bearing could be a valve, but whatever it is it does not sound good. Drain the oil and see what you find.
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10-02-2021, 11:36 PM | #3 |
Scooby Newbie
Member#: 192990
Join Date: Oct 2008
Chapter/Region:
MAIC
Location: Silver Spring, MD
Vehicle:2012 Impreza WRX Satin White Pearl |
strange though, even if I lost compression on a cylinder, I should still be able to start the car no? I've been on a built motor for 40k miles so i would be very disappointed if there's something going on with a rod or valve.
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10-02-2021, 11:52 PM | #4 |
Scooby Specialist
Member#: 515308
Join Date: Jun 2020
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Spun bearing would drag it down, also maybe a failed tensioner clanking around and jumped timing
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10-03-2021, 12:32 AM | #5 |
Scooby Newbie
Member#: 510046
Join Date: Dec 2019
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Sounds like timing slipped.
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10-03-2021, 01:07 AM | #6 |
Scooby Specialist
Member#: 469585
Join Date: Jun 2017
Chapter/Region:
W. Canada
Vehicle:2009 STi White |
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10-03-2021, 01:35 AM | #7 |
Scooby Newbie
Member#: 192990
Join Date: Oct 2008
Chapter/Region:
MAIC
Location: Silver Spring, MD
Vehicle:2012 Impreza WRX Satin White Pearl |
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10-03-2021, 08:23 AM | #8 |
Scooby Specialist
Member#: 515308
Join Date: Jun 2020
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10-03-2021, 05:32 PM | #9 |
Scooby Guru
Member#: 487
Join Date: Nov 1999
Chapter/Region:
TXIC
Location: Houston TX
Vehicle:1998 /2005 STunIcorn Acadia Green USDM 22b |
That klunk/klunk is very consistent
Meaning engine internals Compression test needed I am pretty sure if engine has zero compression on one cylinder (out of 4) engine will not start |
12-23-2021, 07:58 PM | #10 |
Scooby Newbie
Member#: 192990
Join Date: Oct 2008
Chapter/Region:
MAIC
Location: Silver Spring, MD
Vehicle:2012 Impreza WRX Satin White Pearl |
just for kicks I'll update my situation. Turned out the timing belt tensioner mount failed. Literally broke off the short block. So I got a new short block casing (sucks because the one that failed was a closed deck short block), timing got thrown off and the pistons bent a valve. Anyways thousands of dollars later the car lives and is currently doing it's new engine break in miles.
Thanks for the help, and hope this helps someone in the future |
12-25-2021, 10:01 PM | #11 | |
Scooby Newbie
Member#: 510046
Join Date: Dec 2019
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Quote:
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12-26-2021, 01:04 AM | #12 |
Scooby Newbie
Member#: 323759
Join Date: Jun 2012
Chapter/Region:
International
Location: Canberra Australia
Vehicle:2010 legacy GT Black |
What are you doing with the old cases?
Surly someone can aluminium weld on the broken part? |
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