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General => The garage => Topic started by: sharki786 on 29 October 2010, 14:53

Title: mk3 gti 8v AGG engine code (oil on spark plug THREADS)
Post by: sharki786 on 29 October 2010, 14:53

i was just looking over the engine untill i noticed some oil comming from the left hand side spark plug, after chaging them all i noticed that all of the THREADS of the spark plugs had oil on them, someone said its the steam valve seals? is that true? as the engine was rebuild in feb this year. just need comfirmation thats all. the 1st spark plug (left hand side) was the worse.

all help much appreciated

thank you

Title: Re: mk3 gti 8v AGG engine code (oil on spark plug THREADS)
Post by: rubjonny on 29 October 2010, 15:07

more likely you just have a rocker cover leak and its worked its way down the threads. if you have oil leaking up the threads from inside the head you have greater issues than stem seals  :grin:

Title: Re: mk3 gti 8v AGG engine code (oil on spark plug THREADS)
Post by: sharki786 on 29 October 2010, 15:12

no leak from rocker cover. the spark plugs where abit loose didnt have to use any energy to undo them either. what issue can that be then? il just take it back to the bloke and get him to do a PROPER rebuild!

Title: Re: mk3 gti 8v AGG engine code (oil on spark plug THREADS)
Post by: rubjonny on 29 October 2010, 15:23

if loose then that could explain it, clean up threads and the holes and nip em up again (dont use uber force, only aluminium threads!) just nip up.  keep an eye on it :)

Title: Re: mk3 gti 8v AGG engine code (oil on spark plug THREADS)
Post by: sharki786 on 29 October 2010, 19:22

but what i dont understand is that where did that oil come form?

Title: Re: mk3 gti 8v AGG engine code (oil on spark plug THREADS)
Post by: AudiA8Quattro on 31 October 2010, 19:49

Use a torque wrench, then you know it is tight enough.