Oil tube leak

[pgboxters]

Could oil tube leaks cause ruff running and rattling while stopped. I have a rattling problem in the top part of my intake also bad gas mileage no codes at all. Ty

[RFM]

All kinds of leakage influence the running characteristics of an engine, the rattle in the upper part of the intake manifold is probably caused by a loose butterfly valve or a connecting part on/ inside the transverse sections of the manifold, this always gives influence on gas milage/power.

[pgboxters]

it also sounds like a speaker diaphram going rrrrr. im not sure how i would investigate this myself. By tubes i meant spark plug tube to clarify. thanks

[JFP in PA]

it also sounds like a speaker diaphram going rrrrr. im not sure how i would investigate this myself. By tubes i meant spark plug tube to clarify. thanks

 

If the plug tubes leak, normally I would expect to see oil seepage on the cylinder heads, and would definitely expect to see oil on the coil packs when removed.

[pgboxters]

There is oil dripping mostly on front 2 tubes what product could I use to flush oil or would fuel system cleaner work before I change the 9 ish quarts again thanks

[JFP in PA]

There is oil dripping mostly on front 2 tubes what product could I use to flush oil or would fuel system cleaner work before I change the 9 ish quarts again thanks

 

 

A fuel system product like Techron will only clean the components that come in direct contact with the fuel, like injectors, valves, etc.; but in the process tends to foul the engine oil.  If you are concerned about cleaning the leaking oil off the engine, first correct the problems with the leaking tubes (O-rings, replacement tubes, etc.) then clean the engine bay with a commercial engine cleaning product.  Some use products like Simple Green or Orange Blast, which are great at cutting oil and grease.