SaturnFans.com
saturnfans.com - classifieds - forums


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

 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 11-15-2021, 02:08 AM   #1
lanxer57
Member
lanxer57 will become famous soon enough
 
Join Date: Oct 2020
Location: aurora, colorado, u.s.a
Posts: 362

1999 SC1
2001 SC1
Wrench specifics on compression testing, P0301

I did a compression test, the engine was cold, I tested for 10 "cranking noises" the results:
1;90, 2;110-145, 3;121, 4;130
added some oil:
1;100-145-123, 2;110-145, 3;110, 4;145-120
because I was not sure if this was correct (given the inconsistant results, and how far off they were from 180), I cranked it until it stopped on its own 10 times (usually 4-5 "noises"). this was with oil in the cylinders the results:
1;175, 2;189, 3;170-180, 4;180

How EXACTLY would I get the most accurate readings possible on a compression test? A thread posted in 2003 (that is 1 month older than I am) by canada-eh said it was best to "crank the engine over 10 times", what EXACTLY does that feel/sound like? The sounds that cranking an engine makes are divided into pulses, how many of these "pulses" counts as cranking the engine over 1 time?
I would like to do it correctly next time.

This is on a 1999 SC1 with the SOCH engine, nearly 170000 miles.
I can not drive it until it passes emissions, and it will not pass with a "service engine" light. I have gotten a code P0301 for a missfire in cylinder 1, as well as the "service" light with the wrench. The light usually comes on after a few seconds (although sometimes it does not come on until the engine is shut off and restarted), but my OBD2 scanner usually takes a very long time to detect the error code. I have tried changing the spark plugs/wires, ignition coil packs with the plate they attach to (could not figure out how to separate them), fuel injectors, ECTS (with coolant), idle air control, EGR valve, (and cleaned as much out of the holes as I could), and MAP sensor. I also sprayed carburator cleaner around the intake manifold, it did not run any different. Dad said it smells like it is running rich (my nose does not work) Any other ideas? (do not be afraid to tell me it needs an engine, I have a 2001 SOCH with the transmission sitting on a pallet in the garage)
...
1997 V6 Mustang coupe 2018-2019(wrecked, airbags went off)
2001 SC1 2020-2021(wrecked, frame was bent)
1999 SC1 2021-now(working progress)
lanxer57 is offline   Reply With Quote
SaturnFans.com Sponsored Links
 

Bookmarks


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
How-To: Compression testing w/ engine out of car ShawnV How-To Library 6 10-14-2010 11:42 PM
2001 SOHC P0301 - confusing compression numbers BobbyBeans S-Series Tech 44 05-24-2010 11:34 AM
compression testing results Amp67 S-Series Tech 3 05-27-2009 01:54 PM
Testing Compression in an S-Series Saturn-Eh! How-To Library 20 10-13-2005 03:54 PM
Compression and Leak Down testing. Red97sc2 S-Series Tech 2 04-09-2004 02:37 AM


All times are GMT -4. The time now is 02:20 AM.

Advanced Forum Search | Advanced Photo Search


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, vBulletin Solutions Inc.
SaturnFans.com. The Saturn Enthusiasts Site.