stupidguy10

So i have a 1998 Civic Ex with the stock motor and everything. I was driving a while ago and my car starting knocking pretty bad. Don't know if its a rod or what. I don't really know much motor wise about cars and was wondering if i could get some help. There is oil leaking from where my motor and tranny bolt together when the car is running. Was wondering if this is going to be an expensive fix. Any input would be greatly appreciated! thanks!

K i l l a B e e.

iTrader: (3)

knock is never good. is it a obvious knock or a tick. Sounds like it's more expensive to fix than to just buy a new motor.

stupidguy10

yeah thats what i figured....someone on another site said it was probably the dizzy o-ring...i just dont get how that could be the problem....and how that would cause a knock in my motor...thanks for the input

b16_sol_707

The oil leak where the engine bolts to the transmission (if it's not coming from above the transmission) is the rear main seal. they are not fun to change.

If you are leaking oil from there, odds are that you have driven it while low on oil and damaged the bearings for the crank and rods. This would cause a knocking sound.

If you do not know how to change the bearings and rear main seal and would have to pay a shop to do it, save yourself some money and buy a replacement motor.

stupidguy10

thats the thing....it was never low on oil....and i always make sure of that....and i just dont get how this happened

instructor74

The rear main seal is just that a seal its not a question of if it is going to leak it is only of when!! Running a car low on oil will not cause the seal to start leaking. Running a car low on oil can cause bearing damage that can lead to to much play in the crank and that extra play can cause the seal to wear out and leak. Or as is the case with a lot of these cars they have high milage and are over 10 years old and the seals have just worn out. That being said OP if you do have rod knock you are looking at a rebuild and or replacment of the engine

b16_sol_707

I wasn't saying that the car being low on oil would cause the seal to leak. I was saying that the leak was causing the engine to be low on oil, which probably caused bearing damage.

stupidguy10

i figured i would have to go that route.....the shitty thing is the motor was rebuilt and only had about 12,000 miles one it when i bought the car....and i drove it for maybe 7000 miles....shitty deal i guess