Help air intake manifold leaking

[lwcrs2001]

Dear fellow members. I have a 2006 1.6hdi van. I have a leak from the manifold where it sits on top of the engine. I thought it was fuel injectors at first, but apon closer inspection while the engine is Rev to about 3/4 rpm I can see it leaking from the o rings. Problem is I have replaced all the o rings but it is still leaking. Do I need to use any sealant on it . Any help would be appreciated.

[Col]

Are you sure it's not cracked?
"O" rings don't need sealant unless there is something else wrong

[lwcrs2001]

Hi when the engine is running, you can see it coming from o ring. Their is a plastic washer that the o ring sits on that goes on top of engine before o ring but main dealer did not have any part no for them . He wasn't sure what their were for so stuck really what to do

[geoff]

Is this what you are doing ....

[Image: _57_zpsndxvbj6b.jpg]

Unsure about washers but you could use gas ptfe tape wrapped around the rings to help them seal.

[lwcrs2001]

Hi that is it. Found out that's it's the plastic end caps that sit on the end of the manifold that you can't get unless you buy a whole new manifold