Oil Pressure/Over heating highway hill
05-16-2016, 07:44 AM
#16
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Year: 1996
Model: Cherokee
Engine: 4.0L
Fuel pressure seems good, its 31-32. When I rev the engine it jumps up to 34-35 but then goes right back down to 31-32
Oil in the engine doesn't seem to run more slowly or quickly than new oil out of the jug. If there is a difference it seems small to me. Here are videos showing the difference. First video is engine oil cold. Second video is engine oil hot-ish (engine ran for about 15min, shut it off, waited 5min then tested oil), third video is oil right out of the jug. Washed my hands with gojo before each testing so there wouldn't be any oil slick left over. Used a zip-tie for the new oil so the results wouldn't be compromised from the dipstick.
Engine oil cold - YouTube
Engine oil hot - YouTube
New oil - YouTube
Oil in the engine doesn't seem to run more slowly or quickly than new oil out of the jug. If there is a difference it seems small to me. Here are videos showing the difference. First video is engine oil cold. Second video is engine oil hot-ish (engine ran for about 15min, shut it off, waited 5min then tested oil), third video is oil right out of the jug. Washed my hands with gojo before each testing so there wouldn't be any oil slick left over. Used a zip-tie for the new oil so the results wouldn't be compromised from the dipstick.
Engine oil cold - YouTube
Engine oil hot - YouTube
New oil - YouTube
confirm with your year specific service manual
05-16-2016, 07:55 AM
#17
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Doesn't appear fuel fouled.
How's it smell?
How's it smell?
05-24-2016, 10:10 AM
#18
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Year: 1990
Model: Cherokee
Engine: 4.0 L
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