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Old 02-16-2017, 06:35 AM   #1
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Need help on 2.3!!!! Eating Oil!

First time posting, first time focus owner. Bought a 2005 zx4 st, 127k. First check the oil little low and coolant looked good. No smoke, a little soot which seem to be normal for these cars. This is what I found when looking at the car before I bought it. Car ran fine notice a little stumble around 2000 to 2500 rpm, so I bought a set of plugs. Outer plugs look great, inner plugs have white crusty build up, like buring coolant. So I have purchased a gasket set to replace the head gasket. I have been driving the car until I can get time to do it, I drive 800 mile a week. Planning on the fix this weekend, I have put 1600miles on it and I now have oil in the coolant and it is using about 1qt of oil over 100 miles! I can not believe that I can not see any smoke! I am not loosing coolant but I see oil in it, I would think losing that much oil I would not be able to see a car behind me, I would see a wall of smoke,LOL! The only leak I can see is a little oil around the spark plug on #2, it was just enough to notice it on the threads of the plug when I removed it. No cooant or oil leaks anywhere. I am wondering if I need to look for a motor instead of replacing the head gasket. Any and all thoughts are welcome and thanks in advance.

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Old 02-16-2017, 07:07 AM   #2
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One other thing I have noticed is when I depress the clutch and the rpm wind down it will dip to low and sputter and level off or it will hang around 1000rpms. I have been doing more searching on this site and the web, what are the chances of it needing a new PCV valve with the head gasket?
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Old 02-16-2017, 07:43 AM   #3
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Oil in antifreeze, think about it. Head gasket like you said, but might not even be worth your time if antifreeze got in your oil. Oil has more pressure though so while it's running it's pushing oil through into the antifreeze, only thing concerning me is if when it's off if any antifreeze is getting through into the oil. Probably won't be able to see it on the dipstick, maybe smell it. I'd drain oil and look for antifreeze.

Chances are very high about needing new PCV, and if you're pulling apart most of the engine I would do all the hoses

You said a couple plugs were white, so my best guess is antifreeze is leaking and being burnt off, but you don't notice the level going down because oil is taking its place. If you flushed antifreeze I bet a lot of oil would be coming out
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Last edited by Byron King; 02-16-2017 at 07:49 AM.
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Old 02-16-2017, 08:41 AM   #4
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^This.

The rpm issue is likely due to a bit of reduced compression in 2/3 cylinders as well. Get the new gasket in immediately, drain and flush the oil, then drain it again. Drain and flush the coolant system. The car may run for a long time yet... then you can swap the engine, but it's not necessary now.
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Old 02-16-2017, 09:09 AM   #5
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Do a compression test to verify that there is something wrong. It is doubtful that all of that oil went into the coolant, you'd see more than a little in the coolant.

That compression test will verify if something is wrong in the cylinders.
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Old 02-16-2017, 04:31 PM   #6
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^^^X2

White/tan crusty is typically burnt oil residue over time, not using enough yet to foul plugs with black oil.

DO wonder about the 'oil in coolant', but that needs a CLOSE look. Many put additives in like a sealant that might look that way for example.

These also typically measure low on first pull of the dipstick - by a full quart. Need to double check & tell more about how you determined usage.
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Old 02-17-2017, 07:45 AM   #7
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I will do a compression test tonight, as for usage, I am checking it daily, I never pay attention to the reading when I first pull the dipstick, I clean and recheck.
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Old 02-17-2017, 09:04 AM   #8
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Sorry to hear you need to change head gasket. There's a possibility that the gasket just blew out between the oil and coolent ports. My dad had same issue. He upgraded his gasket and he's probably put 50-60k on it since.
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Old 02-17-2017, 05:25 PM   #9
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Ok engine close to operating temp, and compression reads
1-190
2-205
3-195
4-190
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Old 02-17-2017, 06:14 PM   #10
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Good numbers there, something else going on.
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