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Cat Man
Cat Man, Cat Engine Expert
Category: Medium and Heavy Trucks
Satisfied Customers: 8412
Experience:  I am ASE Master Truck Certified.
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Cat 3114 in it18f. fuel leak from a plug located behind

Customer Question

Cat 3114 in it18f . fuel leak from a plug located behind engine fan pully mount and engine lifting plate. Is there supposed to be fuel here? What is this plug for?
Submitted: 10 months ago.
Category: Medium and Heavy Trucks
Expert:  Cat Man replied 10 months ago.

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

The plug you see that is leaking is there to plug the fuel rail that runs through the head. The rail is drilled through the head to feed the injectors with fuel. You most likely have a failed O ring on the plug.

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

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