modelageek
Active Member
- Joined
- Jan 31, 2009
- Messages
- 2,241
- Reaction score
- 14
- Points
- 38
- Location
- Boston, MA
- Vehicle Year
- 2004
- Make / Model
- Ford
- Engine Type
- 4.0 V6
- Engine Size
- 4.0
- Transmission
- Automatic
- 2WD / 4WD
- 4WD
OK......just turned off my hot engine and dove right in........I removed the 3 plugs on bank 2..........I admit working with a hot engine is a pain but can be done with gloves. By the time you pull all the plugs it's about 20 minutes anyway.
For compression test you should just let it crank over until the gauge maxes out. No specific time. Throttle should be full open. When hot there should be enough oil in the rings for seal so extra oil won't really tell you much. As well when cranking over there is oil flow.
This is how I did the test:
-I cranked the engine until the gauge stopped moving, about 5 or 6 seconds.....
-I used about a tablespoon of oil in a turkey baster for the wet test....
-i stuffed a screwdriver into the TB to keep the butterfly open
4-dry-160 wet 230
5-dry-188 wet 245
6-dry-195 wet 240
ok so after I posted this I went back down to put the plugs back in......I deiced first I would do another wet test in #6 and take a picture and post it.......I put more oil in with the Turkey baster and the gauge went over the max reading of 300 .....I was shocked and thought it was a mistake so I relieved the pressure and did it again. it went to 270...I did have oil foaming on the tester hose...each time i think I added about 1 tablespoon.....to figure out what a tablespoon was I sucked up a tablespoon of water into the baster earlier ....... here is the pic......
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