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Catch can to fix blue smoke?

Old 01-06-2019, 03:46 PM
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kevensavar
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Default Catch can to fix blue smoke?

Hey guys so i have a 350z 04, vq35de and i would like to know if deleting the pcv valve by adding a catch can would work to fix the blue smoking?
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Old 01-06-2019, 05:15 PM
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bealljk
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how severe is the blue smoke?

how many miles on the engine?

are you rough on this engine?

probably not ... blue smoke is burnt oil - correct? which likely means you have failing piston rings
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Old 01-06-2019, 05:21 PM
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kevensavar
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Originally Posted by bealljk View Post
how severe is the blue smoke?

how many miles on the engine?

are you rough on this engine?

probably not ... blue smoke is burnt oil - correct? which likely means you have failing piston rings

how severe is the blue smoke? severe when ever i push it

how many miles on the engine? around 88k

so if i just change my pistons rings it could fix it?
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Old 01-06-2019, 05:38 PM
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Originally Posted by kevensavar View Post
how severe is the blue smoke? severe when ever i push it

how many miles on the engine? around 88k

so if i just change my pistons rings it could fix it?
If I could diagnose an engine based off a internet forum post I'd be paid way more than I am.

The best thing you can do is take it to a mechanic for a formal prognosis and what your options are
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Old 01-08-2019, 01:34 PM
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Nope, probably not
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Old 01-08-2019, 04:55 PM
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Originally Posted by kevensavar View Post
Hey guys so i have a 350z 04, vq35de and i would like to know if deleting the pcv valve by adding a catch can would work to fix the blue smoking?
Blue Smoke means you are burning oil. The oil is coming from somewhere that it should not. That means there is something wrong with the engine, and it is a major problem. Removing the PCV will not fix this.
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Old 01-08-2019, 05:52 PM
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Originally Posted by kevensavar View Post
how severe is the blue smoke? severe when ever i push it

how many miles on the engine? around 88k

so if i just change my pistons rings it could fix it?
Way too much guesswork going on here, you need to do a compression/ leak-down test, to get some solid information. See here's the problem, if you're going that far into the engine, you don't want to 'just' replace the piston rings, you would want to refresh many things, including machine work/ cleaning. This requires more research, money, and time.

The de engines are known for burning oil, but I would find it hard to believe the piston rings are junked at 88k miles, although I don't know the history of the engine. I would get some solid information before writing the engine off/ rebuilding it.
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