Don't forget your oil change
#1
Don't forget your oil change
Recently i have got a 1995 Jeep Cherokee with a blown head gasket for cheap. As i started taking it apart to pull the head there was a nice surprise waiting for me under the valve cover. Previous owner must have left the same oil in there for ever. Jeep has about 140k miles on it and drove fine even with a blown head gasket. Never had a car before with so much sludge under the valve cover, my stealth was prestine clean compared to this with 190k miles
after poking with a screwdriver a bit
crappy cell phone pics
after poking with a screwdriver a bit
crappy cell phone pics
Last edited by yevgenievich; 07-26-2010 at 04:38 AM.
#4
#5
Dude, if the top end looks like that, think about what the bottom end looks like. After putting the money into a new head and all that work, I wouldn't fire it up quite yet. Drop the oil pan and do an inspection. The oil pump pickup has to be disgusting, and there's probably an inch of sludge in the bottom of the pan.
It's not bad to drop the pan on a 4.0, you may have disconnect the shocks and the track bar to bring the front axle down far enough to remove the pan, depending on if it's lifted and how much.
After you clean out as much as you can, put a mix of diesel fuel and cheap oil back in then run it for a bit and let it sit. Change the oil out a couple of times then put some Rotella and a quality filter and let her run for another 150,000.
Btw, I've never seen a 4.0 that could keep the oil off the ground long enough to cause that kind of build up, haha.
It's not bad to drop the pan on a 4.0, you may have disconnect the shocks and the track bar to bring the front axle down far enough to remove the pan, depending on if it's lifted and how much.
After you clean out as much as you can, put a mix of diesel fuel and cheap oil back in then run it for a bit and let it sit. Change the oil out a couple of times then put some Rotella and a quality filter and let her run for another 150,000.
Btw, I've never seen a 4.0 that could keep the oil off the ground long enough to cause that kind of build up, haha.
#7
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#8
Recently i have got a 1995 Jeep Cherokee with a blown head gasket for cheap. As i started taking it apart to pull the head there was a nice surprise waiting for me under the valve cover. Previous owner must have left the same oil in there for ever. Jeep has about 140k miles on it and drove fine even with a blown head gasket. Never had a car before with so much sludge under the valve cover, my stealth was prestine clean compared to this with 190k miles
after poking with a screwdriver a bit
crappy cell phone pics
after poking with a screwdriver a bit
crappy cell phone pics
#9
That is just plain awful!
My wife and I had a 1993 Wrangler 4.0L, traded it for our 2003 Wrangler, that had 117,00 trouble free miles (engine, transmission, etc.). Such a great vehicle.
My parents have a 1987 Cherokee 4.0L (240,000 miles) and a 1989 Cherokee (175,000 miles) that are still going strong. They still have plenty of power and run smoothly. They also have a 1996 Grand Cherokee 4.0L that has around 140,000 miles.
It is too bad that it was not cost effective for Chrysler to update the 4.0L, to pass the new emission/safety standards, to have kept it available in the 2007 to present Wrangler. Great motor!
My wife and I had a 1993 Wrangler 4.0L, traded it for our 2003 Wrangler, that had 117,00 trouble free miles (engine, transmission, etc.). Such a great vehicle.
My parents have a 1987 Cherokee 4.0L (240,000 miles) and a 1989 Cherokee (175,000 miles) that are still going strong. They still have plenty of power and run smoothly. They also have a 1996 Grand Cherokee 4.0L that has around 140,000 miles.
It is too bad that it was not cost effective for Chrysler to update the 4.0L, to pass the new emission/safety standards, to have kept it available in the 2007 to present Wrangler. Great motor!