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dogboy
Active Member
- Joined
- Aug 6, 2007
- Messages
- 1,590
- Reaction score
- 14
- Points
- 38
- Age
- 32
- Location
- Enumclaw/ Carbonado, WA
- Vehicle Year
- '93
- Make / Model
- Ford
- Engine Size
- 4.0L
- Transmission
- Manual
I have my '93 4.0L, and it is blowing smoke out the exhaust (coolant), but it also has an oil smell, but is not really blue colored, which is confusing. It consumed probably a half gallon of coolant on an hour drive (to work and back).
Also, the smoke is intermittent. It will never blow smoke for a couple minutes until the engine is warm, then it will blow a bunch. Sometimes it will continue to blow smoke, other times it will blow it for a minute, then stop then start for a minute then sometimes it not even blow smoke at all.
There does not seem to be any oil in the coolant, or coolant in the oil, so those 2 are not mixing.
I did a compression test, and the front left and right rear cyl are 156psi, and the other 4 are at 152psi. In my opinion, those are pretty good numbers.
I noticed that if I look in the coolant overflow bottle, there are slow small bubble that rise up (maybe 1 per socond). So I sounds
It is running kind of rough too, kinda like a miss, but it is intermittent, and the idle jumps around too. I haven't figured that part out, so I've just dealt with it.
I don't think the problem is head gaskets, because if it was, 1 or 2 of the cylinders would have lower compression, but they are all pretty much the same.
My first guess was the head gaskets, but the compression test changed my mind.
I don't like the idea of a cracked block, or cracked head, but oh well. I have a spare 4.0L from a 94 Explorer, but it has 240K miles, with a pretty noisy lifter tick, so I don't really want to do that.
I've read about lower intake gaskets, does that sounds like it could be the problem? Or am I just missing something, and could it actually be a head gasket?
Maybe a cracked block or head? I just want some opinions.
Also, the smoke is intermittent. It will never blow smoke for a couple minutes until the engine is warm, then it will blow a bunch. Sometimes it will continue to blow smoke, other times it will blow it for a minute, then stop then start for a minute then sometimes it not even blow smoke at all.
There does not seem to be any oil in the coolant, or coolant in the oil, so those 2 are not mixing.
I did a compression test, and the front left and right rear cyl are 156psi, and the other 4 are at 152psi. In my opinion, those are pretty good numbers.
I noticed that if I look in the coolant overflow bottle, there are slow small bubble that rise up (maybe 1 per socond). So I sounds
It is running kind of rough too, kinda like a miss, but it is intermittent, and the idle jumps around too. I haven't figured that part out, so I've just dealt with it.
I don't think the problem is head gaskets, because if it was, 1 or 2 of the cylinders would have lower compression, but they are all pretty much the same.
My first guess was the head gaskets, but the compression test changed my mind.
I don't like the idea of a cracked block, or cracked head, but oh well. I have a spare 4.0L from a 94 Explorer, but it has 240K miles, with a pretty noisy lifter tick, so I don't really want to do that.
I've read about lower intake gaskets, does that sounds like it could be the problem? Or am I just missing something, and could it actually be a head gasket?
Maybe a cracked block or head? I just want some opinions.
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