Front seal oil leak; Can I use an external sealant to plug it?
#1
Front seal oil leak; Can I use an external sealant to plug it?
I've been trying to diagnose a mild oil leak issue for a while on my 2002 4x4 blazer.
Today I cleaned her up, changed the oil, did a test drive, and found that the leak appeared to be coming from the front where the harmonic balancer is.
I notice a white caulking type of substance at about the 4-o-clock position on this housing that goes to the harmonic balancer. There isn't however any type of chalking or seal near the 6-o-clock position and that is where it seems to be leaking.
Instead of pulling this off and replacing the seal, is there a spray-on substance or type of caulking that I could just apply on top of it how it is without taking anything apart?
Today I cleaned her up, changed the oil, did a test drive, and found that the leak appeared to be coming from the front where the harmonic balancer is.
I notice a white caulking type of substance at about the 4-o-clock position on this housing that goes to the harmonic balancer. There isn't however any type of chalking or seal near the 6-o-clock position and that is where it seems to be leaking.
Instead of pulling this off and replacing the seal, is there a spray-on substance or type of caulking that I could just apply on top of it how it is without taking anything apart?
#3
I change the oil every 3,500 miles and I usually need to top it off a bit in between changes to bring the level back to the middle point on the stick.
Not a tremendous amount of oil, but enough to make a huge mess on the garage floor.
The top photo is the leak over night without cardboard to catch it after a 30 minute drive.
The bottom photo is the cardboard catching the leak for about 3 months.
#6
#7
There is this product.
I had tried it and I got mixed results. I suspect because I did not get it to where I needed it (behind some brackets near the heads).
It might be worth trying as it is so easy to do.
https://www.permatex.com/?s=82099
I had tried it and I got mixed results. I suspect because I did not get it to where I needed it (behind some brackets near the heads).
It might be worth trying as it is so easy to do.
https://www.permatex.com/?s=82099
#8
Oh jeeezzz
I found the actual oil leak.
Seems to be rear-main seal I'm guessing.
Damn...
I haven't even driven her today after the oil change or ran the engine, and I found a puddle of oil on the floor when I came out to check on things.
I found the actual oil leak.
Seems to be rear-main seal I'm guessing.
Damn...
I haven't even driven her today after the oil change or ran the engine, and I found a puddle of oil on the floor when I came out to check on things.
#9
The next time I'm under there, I'm planning on snugging up the nuts and bolts again and then adding Nylok nuts to keep the rear nuts in place.
I don't think this oil pan for a 4.3L is for our Blazers but it does show the rear nuts for the oil pan that are on either side of the rear main seal.
P.S. I always wondered if there were supposed to be plugs in those holes. And you still have yours!
https://www.diyforums.net/after-all-.....-165169.html
#10
Don't jump straight to the rear main right away. The very back of the lower intake manifold gasket where it meats the block on the 4.3 has a tendency to spring a leak, run down the back of the block, and give the illusion of a rear main seal gone bad. Not saying that's what it is for sure in your case, but it would not be the first time.