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blue smoke engine
#782444 September 18th 2021 8:46 pm
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1995 Chevy g20 5.7

Blue smoke upon start up and after sitting at lights. Replaced the valve seals and the problem actually got a bit worse...

One of my sparks showed signs of antifreeze and major build up....

Stressed..

Re: blue smoke engine
Brother kitten #782524 September 19th 2021 9:17 pm
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Bummer man. That definitely does not sound good. Let us know how it goes.


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Re: blue smoke engine
Brother kitten #782542 September 20th 2021 4:48 pm
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Thats a bummer there.


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Re: blue smoke engine
Brother kitten #782558 September 20th 2021 5:55 pm
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Uncle Rust N Dents
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You're burning oil AND antifreeze?

Oh, man.
Sorry to hear that.


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Re: blue smoke engine
Brother kitten #782575 September 20th 2021 8:22 pm
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Intake gasket?

Re: blue smoke engine
Meanmachine #782580 September 20th 2021 10:07 pm
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carpal tunnel
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carpal tunnel
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Getting any antifreeze in the oil?

Usually burning coolant will clean off any build up or carbon. It works like steam cleaning the plugs and chamber. Get someone the pull the plugs and pressurize the cooling system. After a little while a spin of the engine will spit coolant out any leaky cylinder.

Last edited by CatFish; September 20th 2021 10:52 pm.
Re: blue smoke engine
Brother kitten #782601 September 21st 2021 11:46 am
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Well the spark plug that showed the sign of wear had some white corrosion on it, along with build up...

Maybe the intake gasket... But there is no major coolant leak, I haven't had to add coolant in ages, but oil, I'm burning ALOT

Seems like the only other thing that could burn this much oil is the piston rings?

Re: blue smoke engine
Brother kitten #782607 September 21st 2021 1:13 pm
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old hand
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I had a dodge 360 with worn rings and it went through a decent amount of oil.


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Re: blue smoke engine
Brother kitten #782608 September 21st 2021 1:20 pm
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carpal tunnel
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How much oil you burning?
A failed PCV system can cause oil burning but usually not that much and usually it'll just smoke a little and run like crap. Major oil smoke would be worn rings.
Have you thought about a cylinder leakage test? That'd tell the tale.

Last edited by CatFish; September 21st 2021 1:23 pm.
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