2nd Generation S-series (1995-2005) Tech Discuss 2nd generation S-series (1995-2005) general tech topics here.

02 2WD Blazer Persistent Misfire, Looking for Fresh Ideas

Thread Tools
 
Search this Thread
 
Old Yesterday | 12:53 PM
  #11  
christine_208's Avatar
BF Guru
Joined: Dec 2016
Posts: 5,644
From: Moscow, ID
christine_208 has a spectacular aura aboutchristine_208 has a spectacular aura about
Default

Just an interested observer on this thread, but dang George, you are amazing. I love your approach to diagnosing and I learn something from so many of your posts! Thanks!!
 
Old Yesterday | 02:45 PM
  #12  
GeorgeLG's Avatar
BF Veteran
Joined: Jan 2007
Posts: 4,648
From: Florida
GeorgeLG has a spectacular aura aboutGeorgeLG has a spectacular aura about
Default

Originally Posted by christine_208
Just an interested observer on this thread, but dang George, you are amazing. I love your approach to diagnosing and I learn something from so many of your posts! Thanks!!
Thank you Christine, I am glad to be part of the team


George
 
Old Yesterday | 08:44 PM
  #13  
Jacoby -_-'s Avatar
Thread Starter
|
New Member
Joined: Apr 2023
Posts: 8
From: Oregon
Jacoby -_- is on a distinguished road
Default

Alright, once more as requested.
1. Cam retard is dead on 0 after doing a little adjusting and re-checking once bolted down.
2. Pulled the crank sensor and cleaned it up, absolutely no damage on it or the wheel teeth, I thought about touching the timing chain with something while the hole was open but I completely forgot to do so before re-installing
3. I performed drop cylinder both at the distributor and plug wires, results below
Minimum idle with all cylinders plugged in: 700RPM
Minimum idle with cylinder 3 unplugged: 680RPM
Minimum idle with cylinder 5 unplugged: 640RPM
4. I haven't pulled them since the distributor install on Wednesday but I can do so soon and send over some pictures
5. Fuel trims provided before are ranges, minimum~maximum, should have clarified before
7. Got some measurements at ambient
ECT: 68F
IAT: 69F
MAP: 29.8Hg
All 02 Sensors were bouncing between 430 ~ 450 mV
LTFT1%: 12
LTFT2%: -1
8. I know you didn't request it, but I know that a vacuum test can tell a lot about valve health, so I attached a gauge to the booster line from the manifold, video attached, tested at idle and 2400 - 2600 RPM.


 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
JantzenDay
Engine & Transmission
4
Mar 16, 2023 11:08 AM
Tony Brown
2nd Generation S-series (1995-2005) Tech
5
Feb 3, 2016 09:00 PM
theblaze1
Engine & Transmission
0
Aug 4, 2015 05:43 PM
rrk03300
Engine & Transmission
3
Nov 15, 2012 10:29 PM
dbftw
Engine & Transmission
6
Oct 13, 2011 11:51 PM




All times are GMT -5. The time now is 11:54 AM.