SaturnFans.com
saturnfans.com - classifieds - forums - webmail


Go Back   SaturnFans.com Forums > Models > Saturn S-Series > S-Series Tech

Reply
 
Thread Tools Display Modes
Old 03-09-2013, 09:38 PM   #1
Stuffburger
Junior Member
Stuffburger is on a distinguished road
 
Join Date: Aug 2009
Posts: 14
Default 1998 SL2 went from running fine to terrible compression just sitting for a weekend

1998 SL2, 120k miles.

My GF's car was running fine last friday, just the normal moderate roughness and noise, to completely unable to start monday morning. It cranks over just fine but won't start. After a lot of other tests and finding everything fine (verified spark and gap, fuel injectors, fuel pump, fuses, relays, MAP sensor, timing chain, wiring- everything in the manual for a cranking but not starting engine) and going crazy for a bit, I checked compression and got some really lousy numbers- around 120, 80, 30, 60 if I recall correctly.

Am I missing anything else that could cause the car not to start? What could cause the car to go from running fine to compression too poor to start at all just sitting for a weekend? Am I correct now to take off the head and verify the condition of the head gasket?

Thanks for any input!
Stuffburger is offline   Reply With Quote
SaturnFans.com Sponsored Links
Old 03-09-2013, 10:22 PM   #2
lamping.ap
Senior Member
lamping.ap will become famous soon enoughlamping.ap will become famous soon enough
 
Join Date: Jan 2008
Location: Cincinnati, OH
Posts: 1,001
 

1998 SC2
Default Re: 1998 SL2 went from running fine to terrible compression just sitting for a weeken

Min compression is 180. Are you sure you performed the test correctly?
lamping.ap is offline   Reply With Quote
Old 03-10-2013, 01:27 PM   #3
Stuffburger
Junior Member
Stuffburger is on a distinguished road
 
Join Date: Aug 2009
Posts: 14
Default Re: 1998 SL2 went from running fine to terrible compression just sitting for a weeken

I had the same thought and also tested my '95, which is running fine, and got numbers around 200 with the same test kit and procedure.
Stuffburger is offline   Reply With Quote
Old 03-10-2013, 05:49 PM   #4
Spaghettiohead
Advanced Member
Spaghettiohead is on a distinguished road
 
Join Date: Mar 2012
Location: Kingsville, TX
Posts: 502

1999 SC2
Default Re: 1998 SL2 went from running fine to terrible compression just sitting for a weeken

Was the battery charged completely?
Spaghettiohead is offline   Reply With Quote
Old 03-10-2013, 09:05 PM   #5
Stuffburger
Junior Member
Stuffburger is on a distinguished road
 
Join Date: Aug 2009
Posts: 14
Default Re: 1998 SL2 went from running fine to terrible compression just sitting for a weeken

Well, I dove in figuring it had to be a bad head gasket. It turned out to be fine, but I found the culprit- the timing chain tensioner arm had broken and I'm guessing the chain had started skipping teeth, getting the timing all kinds of ****ed up. Now I just gotta take off the oil pan and hope the broken chunk is in there
Stuffburger is offline   Reply With Quote
Reply

Bookmarks

Tags
compression, head gasket, low compression, sl2


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Reusing Water pump after running and sitting with oil-contaminated coolant Eazy340 S-Series General 5 09-04-2012 12:58 PM
Vue idles fine, runs terrible, like a bucking BRONCO live2beotch Vue General 7 02-23-2007 05:17 PM
My terrible compression problems ad198592sl2 S-Series General 4 10-24-2005 06:44 PM
Battery light, but car's running fine! callmethewander S-Series Tech 9 06-17-2005 08:04 AM
'97 SL1, running fine, but... machine_man S-Series General 4 12-13-2004 01:05 AM


All times are GMT -4. The time now is 06:41 PM.

Advanced Forum Search | Advanced Photo Search


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
SaturnFans.com. The Saturn Enthusiasts Site.