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Cat Man
Cat Man, Cat Engine Expert
Category: Medium and Heavy Trucks
Satisfied Customers: 8421
Experience:  I am ASE Master Truck Certified.
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Oil leak on c7 Cat

Customer Question

oil leak on c7 Cat
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Expert:  Cat Man replied 1 year ago.

Thanks for asking your question. I will try and help you out.

Where is the oil leak at? Is it leaking for the cam follower cover on the drivers side of the engine?

Customer: replied 1 year ago.
i had a new gsket put in last week
Expert:  Cat Man replied 1 year ago.

Thanks for the information.

So after the gasket was replaced, it is still leaking oil there?

Customer: replied 1 year ago.
dripping every where when i stop im beginning to think its the sending unit
Customer: replied 1 year ago.
would it leak at idle or under pressure
Customer: replied 1 year ago.
if it was bad
Customer: replied 1 year ago.
cant see leak anywhere until i drive it then the oil is everywhere
Expert:  Cat Man replied 1 year ago.

Thanks for the information.

Most often when the gasket has been replaced, it stops the oil leak. Unless the cover itself is cracked. However if it is not cranked, the leak may be something else.

It could be the sensor. It could also be oil coming from the engine vent tube. Does the engine vent tube look wet?

Customer: replied 1 year ago.
I stuck my finger up it this morning after i drove it felt dry.....Would the sending unit leak at idle
Expert:  Cat Man replied 1 year ago.

Thanks for the information.

If it is dry, you may have sensor leaking. I have seen them only leak under load while driving and not at idle.

Please reply back if you need more help or have more questions. I am happy to assist.

Customer: replied 1 year ago.
Im going to put a inspection camera under the hood put screen in cab go drive it to see if that is it im beyond myself i paid 1700.00 still not fixed
Expert:  Cat Man replied 1 year ago.

That's a good idea. Let me know what you find. Sorry you had to spend that much money for it to not be fixed.

Customer: replied 1 year ago.
will do
Expert:  Cat Man replied 1 year ago.

10-4.

Customer: replied 1 year ago.
Checked sending unit that's not the problem.... Looks like xam covers
Might still be leaking.....checked breather tube dry so now I don't know what to do
Expert:  Cat Man replied 1 year ago.

Thanks for the information. If the covers are still leaking. Either the gasket is damage or the cover may be cracked. I am sorry. I wish I had better news.

Please reply back if you need more help or have more questions. I am happy to assist.

Expert:  Cat Man replied 1 year ago.

Hey. I just wanted to see how things were going. Please let me know if you need more help. I am happy to assist. If my information was helpful, please leave a good or higher rating so that I receive credit. Thanks.

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