How to stop blow by??

[InternationalHarvester7.3]

I have a 96 7.3 with 280,000 miles with bad blow by. When I take off the oil cap it looks like a a chimney coming out, so I need to know how to stop it. If anyone has an answer please help.

[JSchuricht]

New piston rings.

[clatterindiesel]

Any pressure behind that smoke?


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[InternationalHarvester7.3]

Originally Posted by clatterindiesel

Any pressure behind that smoke?


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Not a lot.. I set my cap on it and it didn't move, but it did vibrate, not a lot of pressure but lots of smoke.

[clatterindiesel]

It's more than likely fine? Any performance issues or you just popped the cap and got nervous when you seen the blowby.


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[clatterindiesel]

I had one with 150k that blew like a freight train with no issues. Have one now with 277k and it has absolutely zero blowby. So, unless its chugging and there is pressure behind it, I wouldn't worry about it. But that's just me. Do what you think is best.


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[Schnot]

Originally Posted by clatterindiesel

I had one with 150k that blew like a freight train with no issues. Have one now with 277k and it has absolutely zero blowby. So, unless its chugging and there is pressure behind it, I wouldn't worry about it. But that's just me. Do what you think is best.


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Agree. If its running ok then just run it. There's not much you can do with blow by other than rebuild it.


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[InternationalHarvester7.3]

Alright I just wanted to make sure, thanks guys

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