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Old September 19th, 2007, 08:24 PM   #1
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Default burning oil now.. damnit

changed the oil in my truck after the cam break in.

drove 100ish miles and it was BLACK and about a half a quart low.
it burns oil.

i think its the rings.
any options besides replacing the rings?
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Old September 19th, 2007, 08:25 PM   #2
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valve seals ? Does the engine seem doggy at all ? any loss of power ?? if not than its prob valve seals !
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Old September 20th, 2007, 12:08 AM   #3
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oil is BLACK.

mud'n'truck said everything on the head had less then 100 miles on it.
*shrugs*

oh well 3.4 in the summer.
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Old September 20th, 2007, 10:34 AM   #4
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The head has about 100 miles since getting it back from the machine shop. No need for shrugs.
Pretty sure they went though and did every thing. That was when my brother owned it so i dont know all the details but they should have gone though and done every thing. Thats what the shop said.

3.4 swaps are sweet
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Old September 20th, 2007, 11:28 AM   #5
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Quote:
Originally Posted by skife View Post
any options besides replacing the rings?


I asked myself that for a long time.

Then I replaced the block.


Does your oil reak of gas?
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Old September 20th, 2007, 12:08 PM   #6
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If the oil is black and you're burning oil, it's without a doubt the rings. Oil is slipping past, and too much combustion by products are getting into your oil.
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Old September 21st, 2007, 11:00 AM   #7
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i'm going to throw some "engine restorer" in it and hope for the best until summer.

summer comes it might be either a 3.4 swap or a nicer 22RE, this time i think i'd go all out.

i know where there is a complete '96 taco that was rolled thats been sitting for 4-5 years. has nice mud tires on it too, wonder if the guy will sell it.
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Old September 22nd, 2007, 10:17 AM   #8
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The black oil could be from exhaust gas going through the valve seals into the crank case, or bad rings/piston. Do a leakdown and compression check to see if it is the rings/piston.

Sometimes people push the valve stem seals on too far on the overhead cam engines.

They can be a bear to install properly on certain heads, and you have to lube the seals with oil so they will slip onto the valve guide without tearing the outer jacket rubber.

You usually have to tap them on with a hammer and hollow tube or a 12 point socket. It's real easy to tap them down too far and it stretches the garter spring of the seal and now it is junk.

If it didn't smoke or loose oil before changing the head, then it's probably improper seal installation. Good news is that you can change the seals in the car if your agile and brave and have the right tools. Or call a good mechanic.
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Old September 22nd, 2007, 01:52 PM   #9
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compression and leak-down test?
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Old September 23rd, 2007, 05:45 PM   #10
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its a pain to start, have to crank it over alot, i'm thinking its losing compression through the rings.
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Old September 23rd, 2007, 06:14 PM   #11
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Old September 25th, 2007, 12:03 PM   #12
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Quote:
Originally Posted by Enginecraft View Post
The black oil could be from exhaust gas going through the valve seals into the crank case, or bad rings/piston. Do a leakdown and compression check to see if it is the rings/piston.

Sometimes people push the valve stem seals on too far on the overhead cam engines.

They can be a bear to install properly on certain heads, and you have to lube the seals with oil so they will slip onto the valve guide without tearing the outer jacket rubber.

You usually have to tap them on with a hammer and hollow tube or a 12 point socket. It's real easy to tap them down too far and it stretches the garter spring of the seal and now it is junk.

If it didn't smoke or loose oil before changing the head, then it's probably improper seal installation. Good news is that you can change the seals in the car if your agile and brave and have the right tools. Or call a good mechanic.
yeah, go with what he says.
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Old September 25th, 2007, 12:48 PM   #13
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Quote:
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compression and leak-down test?
x2. good place to start
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Old September 25th, 2007, 01:08 PM   #14
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Quote:
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compression and leak-down test?
Come on man, stop being logical. A compression leak down test takes like an hour.

Its much easier to wonder whats wrong then to find out.
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