Thread: Blow By

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Hello,

I am a newbie to chevy V-8 and seem to have a problem with blow by on my 350.

I have a 600 Edelbrock carb with a hose connected to the PCV valve on one valve cover. Their is a breather on the other valve cover. I'm still getting alot of blow by out of the breather.

Any ideas what else i could do to fix it?

Thanks

(rings) there not that much diffrence how would you fix blow by on any other motor I've all way found that if you have a lot then it time to get the tools out and get dirty no easy fix its

you said the oil or blow by is coming from your breather
cap not your pcv valve,if you pull your breather cap off
and look down the valve cover you will probably see
your rocker arms,if you do there are no shields under
the valva cover where you placed the breather cap
if this is the case plug that hole and look down another
hole on the valve cover and find one with the shields,
then put your breather cap there,the shields prevent
the oil from splashing up into the breather cap and
running onto the valve cover,also do this for pcv valve.
I had the same problem once.

you said the oil or blow by is coming from your breather
cap not your pcv valve,if you pull your breather cap off
and look down the valve cover you will probably see
your rocker arms,if you do there are no shields under
the valva cover where you placed the breather cap
if this is the case plug that hole and look down another
hole on the valve cover and find one with the shields,
then put your breather cap there,the shields prevent
the oil from splashing up into the breather cap and
running onto the valve cover,also do this for pcv valve.
I had the same problem once.

hum maby thats whats wrong with my old corn binder I'll have ta look

i've got the shields in there and the motor has about 1000 miles on it

Originally posted by joe buckle
i've got the shields in there and the motor has about 1000 miles on it

be sure you have full vac. at the pcv valve, sometimes carbon will build up under the carb.

Originally posted by lt1s10
be sure you have full vac. at the pcv valve, sometimes carbon will build up under the carb.

It has the hose connected from the PCV valve to the air cleaner. is that wrong?

Originally posted by joe buckle
It has the hose connected from the PCV valve to the air cleaner. is that wrong?

your pcv valve has to have full vac. from the carb. or intake
find a vac plug on the intake run hose from it to the valve cover with pcv valve in it

no pvc ,pvc not working same thing this would be a good reason