Subaru Outback Forums banner
Cancel

2002 H6 - no compression!

21928 Views 59 Replies 11 Participants Last post by  Novablue, 
F
Hey guys. I'm hoping you can help me out. I have a 2002 LL Bean with the H6 engine. Went to start it this morning and it just cranked over fast, no start. If you've ever heard an engine trying to start with a broken timing belt, that is what it sounds like. I verified fuel, then spark and both are good. Plugged in my compression tester to the RH middle cylinder and I get zero compression. I don't even want to bother checking the other cylinders because they are such a PITA to get to and I'm fairly certain they all have zero compression also. So what the heck happened here?!? It has about 160k on it and car was running great last night.

My next thought is to pull the timing cover and start checking it out. I'm guessing I have a broken timing chain or stripped timing cog.

Does anyone know where I can find a guide on pulling the cover? I assume I just need to pull the radiator and then I can get at everything?
Reply
Save
Like
1 - 2 of 60 Posts
C
As an H6 driver, I'm going to be very interested in what this turns out to be...
Reply
Save
Like
C
If a valve isn't closing all the way the clearance should be fairly high.

Looking at the valves with someone cranking the engine might show any abnormalities.

Have to say this is a weird one, I have heard of lost compression from a leaking injector, but not all 6...
Reply
Save
Like
1 - 2 of 60 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Subaru Outback Forums
Welcome to the Subaru Outback Owners Forum, we have tons of information about your Subaru Outback, from a Subaru Outback Wiki to customer reviews.
Full Forum Listing
Explore Our Forums
Gen 5: 2015-2019 Gen 4: 2010-2014 Problems & DIY Maintenance Gen 6: 2020-Future General Discussions
Top