S40Un Posted August 20, 2015 Share Posted August 20, 2015 Just in the middle of replacing the seals in my focus 1.6 tdci injectors as one has been on its way out the last few days. Removed the injectors. 2 are covered in thick back oil as I expected. The other 2 are silver still but covered in Mayo ? Why should this happen ? Thanks Quote Link to comment Share on other sites More sharing options...
MONDEO TXS 2.2 Posted August 21, 2015 Share Posted August 21, 2015 Mayo is an indication of water mixing with oil / fuel 1 Quote Link to comment Share on other sites More sharing options...
MONDEO TXS 2.2 Posted August 21, 2015 Share Posted August 21, 2015 Could be headgasket failure as it's probably either coolant or water in the fuel - Change the fuel filter if not recently done Quote Link to comment Share on other sites More sharing options...
S40Un Posted August 21, 2015 Author Share Posted August 21, 2015 The only thing I could think of is the top seals leaking water in ( I've not got an engine cover ) so water may just sit on top & fall passed the seals ? Quote Link to comment Share on other sites More sharing options...
MONDEO TXS 2.2 Posted August 21, 2015 Share Posted August 21, 2015 Possible I suppose, although I would have thought the hot engine would evaporate the water before it seeped past the seals ? 1 Quote Link to comment Share on other sites More sharing options...
S40Un Posted August 21, 2015 Author Share Posted August 21, 2015 Me to. But cleaned them all up fitted new seals. Back to 70 mpg now no signs of head gasket failure & fuel filter is not long changed Quote Link to comment Share on other sites More sharing options...
MONDEO TXS 2.2 Posted August 21, 2015 Share Posted August 21, 2015 Happy dayz ! :) Keep an eye on the coolant levels 1 Quote Link to comment Share on other sites More sharing options...
Dee_82 Posted August 21, 2015 Share Posted August 21, 2015 I'm curious, how easy did you find removing the injectors? I've googled it and I'm seeing stories of slide hammers an all sorts, I'm in need of replacing one of the seals on the inlet manifold and was wondering about changing the injector seals for good measure. Quote Link to comment Share on other sites More sharing options...
IINexusII Posted August 21, 2015 Share Posted August 21, 2015 if they are seized in when replacing, one thing you can do is run the engine with the clamp loosened/off until the compression pressure of the engine pops the injector out, not sure if its the "best" way of doing it but it works Quote Link to comment Share on other sites More sharing options...
S40Un Posted August 21, 2015 Author Share Posted August 21, 2015 I'm curious, how easy did you find removing the injectors? I've googled it and I'm seeing stories of slide hammers an all sorts, I'm in need of replacing one of the seals on the inlet manifold and was wondering about changing the injector seals for good measure. To be honest they were the Easyest injectors. I've ever had out ! They should only get seized in when they are full of carbon from years of leaking. Mine were just oily & Mayo Only a slight carbon build up Around the copper washer seat on the injector itself. Which worked on my favour , as the copper washers came out with the injectors Rather than having to fish them out Quote Link to comment Share on other sites More sharing options...
TomsFocus Posted August 21, 2015 Share Posted August 21, 2015 The mayo probably helped them come out lol. I'm not sure why it happens but I've seen it on other cars (mainly 2.0 HDis) without any other problems, wouldn't worry about it. 1 Quote Link to comment Share on other sites More sharing options...
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