The Ford Barn

Slowmotoring · 03-30-2021, 01:24 PM

im just getting the model a out for the year now that spring has finally sprung and the salt is washed off of the roads. I have noticed some oil is coming out of the oil filler neck and there seems to be a lot of air blowing out that seems to be bringing some oil vapor along with it. Is this somewhat normal? Ive seen some model a’s with what looks like a vent tube off of the filler kneck that vents underneath the car. Thats why im not sure if this is “normal” for the a’s or if i need to look into the possibility of a broken or seized ring. I have not done a compression test yet.

Slowmotoring · 03-30-2021, 01:30 PM

My bad. I jumped the gun with my post. I have now found that this has already been discussed. Back to the garage now.....

WHN · 03-30-2021, 01:40 PM

Quote:

Originally Posted by Slowmotoring

My bad. I jumped the gun with my post. I have now found that this has already been discussed. Back to the garage now.....

No question is a bad question unless you ask it over and over again.

Oil breather, will also keep the fire wall cleaner. Venders sell several different styles.

Enjoy your car.

hardtimes · 03-30-2021, 07:19 PM

Quote:

Originally Posted by Slowmotoring

im just getting the model a out for the year now that spring has finally sprung and the salt is washed off of the roads. I have noticed some oil is coming out of the oil filler neck and there seems to be a lot of air blowing out that seems to be bringing some oil vapor along with it. Is this somewhat normal? Ive seen some model a’s with what looks like a vent tube off of the filler kneck that vents underneath the car. Thats why im not sure if this is “normal” for the a’s or if i need to look into the possibility of a broken or seized ring. I have not done a compression test yet.

That’s called a draft tube, a GOOD idea.

McMimmcs · 03-30-2021, 07:44 PM

Quote:

Originally Posted by Slowmotoring

My bad. I jumped the gun with my post. I have now found that this has already been discussed. Back to the garage now.....

If that is your worst no no today you had a great day ! Enjoy the rest of your day and be safe! Wayne

Brendan · 04-03-2021, 11:09 AM

Sponsored Links (Register now to hide all advertisements)

Quote:

Originally Posted by Slowmotoring

My bad. I jumped the gun with my post. I have now found that this has already been discussed. Back to the garage now.....

why not bring it up again?

redmodelt · 04-03-2021, 01:32 PM

Rings are not a perfect seal even less so when worn. Pistons goes up, pull air in thru the vent tube, pistons go down push air out thru the vent tube.

Synchro909 · 04-03-2021, 04:19 PM

Quote:

Originally Posted by redmodelt

Rings are not a perfect seal even less so when worn. Pistons goes up, pull air in thru the vent tube, pistons go down push air out thru the vent tube.

With 2 pistons going up and 2 going down, the overall volume of the sump doesn't change. Any gasses exiting from the breather are purely the result of blowby, which as has been said, is inevitable.

Slowmotoring · 04-03-2021, 04:47 PM

I just got done doing a compression test. Cylinder one had 58psi the rest had 60psi. I installed the draft tube after doing the compression test. Weather is nice, its getting driven...

nkaminar · 04-03-2021, 05:03 PM

Off topic: When we were cruising our sail boat, there was a boat nameed "Blew-by-U" I guess they thought is was fast. Whenever there are two sailboats in the same water going the same direction, it is a race.

Synchro909 · 04-03-2021, 07:39 PM

Quote:

Originally Posted by nkaminar

Off topic: When we were cruising our sail boat, there was a boat nameed "Blew-by-U" I guess they thought is was fast. Whenever there are two sailboats in the same water going the same direction, it is a race.

Or maybe it was a reference to the song by Linda Ronstadt
https://www.youtube.com/watch?v=Kp9G0zkorio

03-30-2021, 01:24 PM	#1
Slowmotoring Member Join Date: Nov 2020 Location: Upstate NY Posts: 94	Is some blowby normal? im just getting the model a out for the year now that spring has finally sprung and the salt is washed off of the roads. I have noticed some oil is coming out of the oil filler neck and there seems to be a lot of air blowing out that seems to be bringing some oil vapor along with it. Is this somewhat normal? Ive seen some model a’s with what looks like a vent tube off of the filler kneck that vents underneath the car. Thats why im not sure if this is “normal” for the a’s or if i need to look into the possibility of a broken or seized ring. I have not done a compression test yet. __________________ Good things take time

03-30-2021, 01:30 PM	#2
Slowmotoring Member Join Date: Nov 2020 Location: Upstate NY Posts: 94	Re: Is some blowby normal? My bad. I jumped the gun with my post. I have now found that this has already been discussed. Back to the garage now..... __________________ Good things take time

04-03-2021, 01:32 PM	#7
redmodelt Senior Member Join Date: May 2010 Location: Portland OR Posts: 6,410	Re: Is some blowby normal? Rings are not a perfect seal even less so when worn. Pistons goes up, pull air in thru the vent tube, pistons go down push air out thru the vent tube. __________________ I know the voices aren't real but damn they have some good ideas!

04-03-2021, 04:47 PM	#9
Slowmotoring Member Join Date: Nov 2020 Location: Upstate NY Posts: 94	Re: Is some blowby normal? I just got done doing a compression test. Cylinder one had 58psi the rest had 60psi. I installed the draft tube after doing the compression test. Weather is nice, its getting driven... __________________ Good things take time

04-03-2021, 05:03 PM	#10
nkaminar Senior Member Join Date: Jan 2012 Location: Western North Carolina Posts: 5,874	Re: Is some blowby normal? Off topic: When we were cruising our sail boat, there was a boat nameed "Blew-by-U" I guess they thought is was fast. Whenever there are two sailboats in the same water going the same direction, it is a race. __________________ A is for apple, green as the sky. Step on the gas, for tomorrow I die. Forget the brakes, they really don't work. The clutch always sticks, and starts with a jerk. My car grows red hair, and flies through the air. Driving's a blast, a blast from the past.