The Central Hub for DSM Community and Information

For 1990-1999 Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, and Galant VR-4 Owners. This is where the DSM platform history is documented and archived. Log in to help us in our mission, and to remove most ads from the browsing experience.

Did timing belt and balance shaft removal now have huge oil leak

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

pedrick1

15+ Year Contributor
45
0
Mar 8, 2007
Kirkland, Washington
Like the title says I just did a timing belt and balance shaft removal procedure and now I have crazy oil leaks.

I have sprayed the engine multiple times with brake cleaner and then ran the engine to see if anything is coming out around the front side of the crank but I just cant narrow it down. Through research on here I am starting to suspect I installed my oil pump sprocket incorrectly after putting a new seal on and what not. Does the oil pump sprocket have another piece underneath it that seals up the shaft it rests on? Please any help would be great I have owned this car for 2 and a half months and have only driven it 60 miles because it has done nothing but break on me:mad: thanks
 
Could also be leaking from the plug you installed for the balance shaft elimination...You did put one in, right? What did you use to seal it with?
 
yea i definately put one in haha that would spew like a geiser, i used an expansion plug then surrounded the entire circumference of the plug with jb weld so as of now that is not one of my suspicions
 
yea i definately did, i ground the original one down to make sure it would completely plug up the hole and i covered the threads of the bolt in sealant...

im leaning more towards the oil pump seal, does the oil pump sprocket have two pieces or is it just one and can it only go on one way? i mean i know that the sprocket itself can go on one way only but i read somewhere that there is a "boss" behind it that helps seal that shaft seal and im not really sure what that means...
 
out of all the people who have removed their balance shafts no one can give any advice?
 
I've yet to remove mine, but only you can tell us where you leak is.
Keep up with the washing then running technique until you find it. It has to come from somewhere.

It's also possible that the increase in oil pressure has found new pathways unrelated to recent work that are now leaking from the boost in oil psi.
 
im not so much asking you to tell me where the leak is i am curious about the oil pump sprocket. I have read there is a "boss" behind the sprocket itself that helps seal the shaft it sits on and i am curious if this "boss" is a separate piece of the oil pump sprocket or built into the sprocket itself...??
 
The only thing I can think of that you may be refering to is the oil pump seal itself. It sits inside a "boss" on the front cover... the oil pump sprocket runs back through it and onto the pump gear shaft.

Did you replace (or forget to install) the seal?

This may not be the best idea (and I'm not endorsing it LOL, but... you could pull the front plastic timing cover and run it for a couple minutes. It may make it easier to find the leak. With that said, I would be EXTREMELY careful and definitely wouldn't run it long or drive it that way.
 
i took off my oil pump sprocket today and figured out the assembly myself, brand new oil pump seal i put on had a torn lip so i ordered a new one today. And i already have been running the car without the timing cover on and looking for leaks and no obvious ones appear. I am beginning to hate mitsubishi's...
 
i MIGHT have found the problem, the new head i just put on is missing one of the bottom three middle studs, apparently oil galleries run behind these studs (why is mitsubishi so retarded) and this seems to be where oil could be spewing from...
 
thanks to this oil leak my engine starved of oil and spun my 4th cylinder rod bearing...Thanks mitsubishi!!!:thumb:
 
come on guys i thought you were able to run cars without oil these days.. like come on man if you have a oil leak your already starving your motor for oil due to loss of oil pressure.. if that was my car it wouldnt move one mile.. no cars will run with no oil pressure bro so just quit bitchin and get that dsm alive.. i rebuilt my motor 2 months ago and had it out for a 3 weeks and a balance shaft bearing went... you just got live with it.. kinda use it as a learning curve LOL :)
 
how did i half ass the job? i didnt half ass anything, after replacing my head and removing my balance shafts the car started leaking oil, i completely went back in, took off timing belt and crank sprocket and replaced the brand new main and oil pump seals that i had JUST replaced because i didnt lube the ones i put on there and the lip of my oil pump seal got a little torn up on the dry startup. Im not a dumbass so dont talk to me like one, i never said that the car could run with no oil, i was constantly putting more into it and i only drove it about 5 miles with not ZERO oil pressure but LOW oil pressure, its not like i drove the car around for days or weeks with low oil pressure. If the car had ZERO oil pressure i wouldnt have driven it a mile but the oil pressure was fine when i started it up and it gradually went down as i drove it but it was never zero. And could you please explain to me what part of the job i half-assed? I didnt know that missing one exhaust manifold stud was gonna cause a huge oil leak. On the previous head i had, there were two studs missing and it caused no problems so i thought one stud gone, no big deal but no, there are oil gallies running behind this particular stud which i never would have guessed therefore causing me to achieve low oil pressure and spin my bearing ruining my crank. So basically the bottom half of my engine is ruined because i was missing an exhaust manifold stud...if that isn't retarded i dont know what is...
 
You left the exhaust manifold studs out of the head, causing the oil leak. That's your fault, not Mitsubishi's fault.
 
I never said the seals were mitsubishi's fault that is why i went in and replaced them, and I had every single exhaust stud in the head except one which i didnt think would be a big deal, how am i supposed to know that oil can leak from an exhaust stud? I said mitsubishi was retarded for running open oil gallies behind these studs that can leak if one is absent. What benefits are gained through having these open oil gallies behind these studs? I dont believe exhaust manifold studs need lubrication correct me if im wrong
 
I know this is an old thread and nobody cares about it anymore...

...but I was just wondering why the guy who spun a rod bearing when his motor was starved for oil; why didn't he just notice the oil pressure gauge fall dangerously low?

*shrug*

Merry Christmas.
 
Add Value - Be Respectful - No Trolling - No Misinformation - Participate Often!
Support Vendors who Support the DSM Community

Build Thread Updates

Latest Classifieds

Back
Top