Blowing Smoke (72 390)

Engine, ignition, fuel, cooling, exhaust

Moderators: Ranchero50, DuckRyder

Post Reply
User avatar
billbates40
New Member
New Member
Posts: 97
Joined: Sun Mar 16, 2008 9:06 pm
Location: Montana

Blowing Smoke (72 390)

Post by billbates40 »

I have a 72 with a 390 in it. It started blowing "smoke" out of the drivers side pipe after my buddy overheated the truck. I put a piece of glass close to the pipe and it seems to be more steam than smoke. I also checked the plugs, and found the first one on the driver side (I'm not sure the number) to have a little water on it. I checked the dipstick and above the oil I can tell there is water. I took off the oil cap and don't appear to have blow-back. So this is what I'm thinking is the deal and I'd like everyones :2cents: .

I hope it is just the valve cover gasket. I am changing both of them over Labor Day so I want to see what everyone thought.

Other questions...

Will the water inside the engine ruin anything until then?
Anything else I should double check while I got it apart?
User avatar
DuckRyder
Moderator
Moderator
Posts: 4936
Joined: Mon Jul 19, 2004 3:04 pm
Location: Scruffy City
Contact:

re: Blowing Smoke (72 390)

Post by DuckRyder »

I hope it is just the valve cover gasket. I am changing both of them over Labor Day so I want to see what everyone thought.
Valve cover gaskets won't let water into the oil or the cylinder to burn. Intake or head gaskets would be my guess, probably head gaskets if it was over heated.
Will the water inside the engine ruin anything until then?
Its not good either way, but if it has antifreeze in it it will attack bearing material pretty fast.
Robert
1972 F100 Ranger XLT (445/C6/9” 3.50 Truetrac)

"An unarmed man can only flee from evil, and evil is not overcome by fleeing from it." -- Jeff Cooper
User avatar
billbates40
New Member
New Member
Posts: 97
Joined: Sun Mar 16, 2008 9:06 pm
Location: Montana

Post by billbates40 »

Oops that is what I meant, head gaskets.
User avatar
Wes
Blue Oval Fan
Blue Oval Fan
Posts: 732
Joined: Fri Oct 21, 2005 6:04 pm
Location: California, Southern& Lake Havasu Az

Post by Wes »

Drain that water outta of your crank case your crank and rods will rust.
When you do the head gaskets inspect the heads closely, maybe even have them magnifluxed,for cracks.
Wes

http://www.fordification.com/galleries/ ... ?cat=10402
67 F250 High boy
69 Bronco

If you can't see fit to stand behind Our Troops...Please stand in front of them :)
User avatar
basketcase0302
100% FORDified!
100% FORDified!
Posts: 6805
Joined: Thu Jan 26, 2006 7:11 am
Location: Hawthorne, Florida

re: Blowing Smoke (72 390)

Post by basketcase0302 »

bill
Oops that is what I meant, head gaskets.
If you've got the head off, I'd go ahead and have it magnafluxed for cracks.
This really doesn't cost that much more and will give you piece of mind.
Call a local machine shop for pricing, you'll be glad you did.

Kinda' a "measure twice/cut once" type thing.
So you don't wind up pulling the head again... :2cents:

Basketcase
Jeff
http://www.fordification.com/forum/view ... 22&t=46251
SOLD-71 F-350 dually flatbed, 302 / .030 over V-8 with a "baby"C-6, B & M truckshifter, Dana70/4.11 ratio, intermittent wipers, tilt steering, full LED lighting on the flat bed, and no stereo yet (this way I can hear the rattles to diagnose)! SOLD!
Many Ford bumps / one 76' EB / and several dents through the years.
A lot of "oddball" Ford parts collected from working on them for 34 years now!
2008 Ford Escape 4 x 4
cdeal28078
100% FORDified!
100% FORDified!
Posts: 1982
Joined: Mon Aug 15, 2005 8:45 am
Location: North Carolina, Huntersville

re: Blowing Smoke (72 390)

Post by cdeal28078 »

I agree about having it magged and I would also check it for sunk valves and flatness. Probably a good time to get the heads rebuilt if you have never touched them before. Seems like FE's are bad about sinking the valves.
clint
71 F100 SportCustom
460 C6. Disc Brake/Power-steering/automatic Swap. 3.00
1986 Bronco 5.0 AOD
oldschoolrods
Preferred User
Preferred User
Posts: 326
Joined: Tue Aug 10, 2004 11:06 pm
Location: Lancaster, Pennsylvania

re: Blowing Smoke (72 390)

Post by oldschoolrods »

Yep if you have the heads of might as well get hardened valve seats put in the exhaust.
1969 Ford F250 Custom Cab 360/C6 - currently under de-construction
Post Reply