leaking oil around injectors what should I do

I put car in to get tyres balanced rotated today and was informed I had a major oil leak... Went home and degreased engine as right side of engine was covered in oil. ran and couldnt find anything so then took intercooler off and there was oil coming from top of engine area I was relieved as I thought it could have been a head gasket. Cleaned it down again and have found the oil coming from number 2 injector working from front of car it is trickling out and pooling on manifold. I have done a bit of reading and am a bit unsure if I should replace all 4 now or just the one and also is there anything else I shoukld replace at the same time. My car is a 2003 direct inject zd30 diesel. also is there any precautions in replacing the cups or do they just come out. do they need to be glued in or are they just placed in the hole?

The injector lines need to come off to replace the seals. You might aswell do them all (well I would if it were me, lol), and maybe the glow plug seals too while your at it. As its not a quick job to do. To remove the injector seals once everything is off is easy, just use a screw driver and lever them out. The glow plug seals are threaded and screw in.

You should not be getting oil coming out of your fuel injectors, only fuel if there is a leak unless you have engine problems.

Are you using much oil, are you blowing blue smoke out of the exhaust, noticed any performance issues lately?

Are you 100% sure it is coming from the injector and not somewhere else?

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Are you 100% sure it is coming from the injector and not somewhere else?

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Can you put up a photo mate?

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Originally Posted by AB

You should not be getting oil coming out of your fuel injectors, only fuel if there is a leak unless you have engine problems.

Are you using much oil, are you blowing blue smoke out of the exhaust, noticed any performance issues lately?

Are you 100% sure it is coming from the injector and not somewhere else?

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The ZD30 injector go through the side wall off the cylinder head and sit under the rocker cover AB. They use a special seal to stop the oil from under the rocker cover getting out where the injector is. Quite common for the seals to go hard and then leak....

With a quick google this is the best pic I can find for you. Ignore the circle in the pic. See the Injector in the pic. Its right angled. The injector goes down into the head and the short right angled arm come out at 90degrees'ish through the side of the head. This is whee they leak from.
Attachment 68686

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Originally Posted by mudski

The ZD30 injector go through the side wall off the cylinder head and sit under the rocker cover AB. They use a special seal to stop the oil from under the rocker cover getting out where the injector is. Quite common for the seals to go hard and then leak.... With a quick google this is the best pic I can find for you. Ignore the circle in the pic. See the Injector in the pic. Its right angled. The injector goes down into the head and the short right angled arm come out at 90degrees'ish through the side of the head. This is whee they leak from. <img src="http://www.nissanpatrol.com.au/forums/attachment.php?attachmentid=68686"/>

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Thanks mate, didn't know the zd30's were set up like that. Do you know what was the advantage to being on the side?

Yeahs it definitely oil leaking around seal I was just unsure of how to replace them if they were glued in ect. What is the best genuine or aftermarket seals are the aftermarket ones OK as want to get fixed asap. car hasn't changed in performance its just leaking a bit of oil from seals and running down all right side of motor and I dont like oil leaks so want it fixed.

Also when I remove injectors will the fuel system have to be primed ect to start again or should it be ok if I remove injectors then put back in.

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Originally Posted by AB

Thanks mate, didn't know the zd30's were set up like that. Do you know what was the advantage to being on the side?

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Dont know of any advantage. More like a design flaw IMO. Lol

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Originally Posted by markstevo

Yeahs it definitely oil leaking around seal I was just unsure of how to replace them if they were glued in ect. What is the best genuine or aftermarket seals are the aftermarket ones OK as want to get fixed asap. car hasn't changed in performance its just leaking a bit of oil from seals and running down all right side of motor and I dont like oil leaks so want it fixed.

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Never used aftermarket, but read a few stories of them leaking. Not much of a price difference between OEM and aftermarket....

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Originally Posted by markstevo

Also when I remove injectors will the fuel system have to be primed ect to start again or should it be ok if I remove injectors then put back in.

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No need to remove the injectors. Just take the lines off the injectors and pry out the seals. Might be easier to also remove the rocker cover so you can push the seal from the inside too. The fuel system will need to me primed when your done too. Just pump the bejesus out of the primer, start the car and whilst its idling, keep priming for atleast another 2 minutes. Dont just start and drive off.

Does anybody have the part number for the seals

So what's the rationale behind the continued pumping of the primer after the engine has started? Is it to get rid of any ore possible air bubbles in the lines?

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Originally Posted by PRIGBY

So what's the rationale behind the continued pumping of the primer after the engine has started? Is it to get rid of any ore possible air bubbles in the lines?

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Spot in..
You need to force it threw..
The pump sucks fuel.. not air.
So you gotta assist it.

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Originally Posted by markstevo

Does anybody have the part number for the seals

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13276-2W211 for Direct Injection.

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Originally Posted by PRIGBY

So what's the rationale behind the continued pumping of the primer after the engine has started? Is it to get rid of any ore possible air bubbles in the lines?

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Built into the pump is a circuit board, and this apparently gets hot so fuel flows under or over or near it, to keep it cool. If you get an air lock in the pump, just running the car wont remove it and then you over head the pcd and then its fried and then your up for a new pump. So I have been told and from my findings last year on this. So continually priming whilst the motor running will push any air locks out.

Hi,
I got Nissan patrol 2010 3L Turbo Diesel Y61 Model. Suddenly there is an oil leak on top of 3rd injector.
Can someone let me know what can be the reason. Only 160 000km so far.
Please let me know how to fix this. I have attached a picture.

Thanks
Mark western AAttachment 83723ustralia

Hi,
I got Nissan patrol 2010 3L Turbo Diesel Y61 Model. Suddenly there is an oil leak on top of 3rd injector.
Can someone let me know what can be the reason. Only 160 000km so far.
Please let me know how to fix this. I have attached a picture.

Thanks
Mark western AAttachment 83723ustralia