Oil inside fuel injectors

Richard Sons

Asked by Sep 01, 2015 at 09:25 PM about the 2007 Ford Edge

Question type: General

My 2007 edge was missing so took it to the shop where they said it had a miss on #1.  Shop replaced coil and new plug all around it did not help.  they removed the tops to injectors and found them full of oil. Any ideas on how oil got in there.  First thought is someone put oil in my gas tank, as a prank. Does anyone else know how oil can get in the fuel injectors.

5 Answers


Have a compression test done,it will show leak,and oil can only get to injector through piston ring.

1 out of 1 people think this is helpful.

Leaking valve cover gasket -- over long enough period, oil will leak will ruin coils (and associated spark plug). Shop mechanic most likely saw/felt oily build up on #1 plug but took short cut and just replaced coil and plug. Since these will likely need to be replaced again, after source of oil leak is located and repaired, shop should replace plu and coil,at N/C.

Richard Sons

He put it on the computer and the code said it was a misfire in #1. But after the coil and plug was replaced and new plugs all around it was still misfiring. So when he checked the injectors he found oil in three of them


Leaking valve cover gasket or you have bad rings. do you see any oil leaks anywhere? have your timing check. with oil being noted i would check the valve cover gasket first then go from there.


Did you have an oil change before this happened? Could it be possible that some oil spilled and got to the injectors?

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