- Joined
- Apr 8, 2008
- Messages
- 251
- Points
- 3,101
- Vehicle Year
- 2002
- Engine
- 4.0 V6
- Transmission
- Automatic
I just got done doing some work on this '87 2.3.
Compression test:
Current vs previous
on the original head, which has been changed)
#1: 135..............140
#2: 125-130.......140
#3: 140..............130
#4: 140..............125
Also did a vacuum test, which resulted in a steady 15 at first, then drops to about 13-14 and fluctuating.
Smooth idle at first, then gets a little rough, but not too bad. Sometimes feels like it misses, and is down on power. So what do all these things tell me?
I'm guessing the difference in compression is a result of valves, old head vs new head(used, and hasn't been done over by a shop yet)?
Going back out in a few to do the KOEO/KOER tests.
Compression test:
Current vs previous
on the original head, which has been changed)#1: 135..............140
#2: 125-130.......140
#3: 140..............130
#4: 140..............125
Also did a vacuum test, which resulted in a steady 15 at first, then drops to about 13-14 and fluctuating.
Smooth idle at first, then gets a little rough, but not too bad. Sometimes feels like it misses, and is down on power. So what do all these things tell me?
I'm guessing the difference in compression is a result of valves, old head vs new head(used, and hasn't been done over by a shop yet)?
Going back out in a few to do the KOEO/KOER tests.
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