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Post Info TOPIC: Oily plug, what do you reckon??????????????


Guru

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Posts: 758
Date: May 13, 2009
Oily plug, what do you reckon??????????????


Any ideas?

 

Ive got a problem with the Cadillac, basically on the D/S head the back plug is fouling up and it black!

 

Did a compression test and all was fine, so I have pulled the head off tonight and the back 2 valves are back and oily?

 

So removed them cleaned them up and lapped them back in and have replaced the valve seals at the same time (just round O-rings)

 

To check they are air tight, turned the head upside down and filled the area with oil, and there is nothing leaking back down the valve or valve stems  

 

Checked the piston, no play and put oil down the bores and its seating there, ( if the rings were gone it would sink in)

 

Does anybody have any other ideas, because I am stumped!!

 

Will put the head back on when the head gasket arrives Saturday??



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Senior (As in old Bastard) Member

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Posts: 848
Date: May 13, 2009

Did you try another plug first / change leads ?

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Guru

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Posts: 758
Date: May 14, 2009

All new plugs and leads just put etc,

taken the lifters out tonight and soaked them and checked they work and i have found 2 pushrods slightly bent but only, have a spare set so going to put them in!

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The Piss Artist Formerly Known As Mark

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Posts: 879
Date: May 14, 2009

only thing to do now when its back together give it a compression test that will tell if your rings are gone
or it could have been down to that sticky valve which bent the pushrod so when the valve shut the cyl. wasnt getting enough induction thus drawing the oil past the piston

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Veteran Member

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Posts: 41
Date: May 16, 2009

Also check to see that your Exhaust Valve is Opening Like it Should . I don't think it's your Valve's not seating . And Sound's like your ring seal is good . I say this Because your Compression Test is Good . So I would Check your Valve Opening on the Exhaust Side of that Cylinder . Hopefully your Camshaft Lob is not Worn . Also check your Distributor wire / Cap for that Cylinder .

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Guru

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Posts: 758
Date: May 16, 2009

Well its up and running again, cleaned the H'tappets re-oliyed and just had it up and running, tappets still a bit noisy have started to get a bit better, but I reckon i will take it out for blast down the bypass tomorrow and then change the oil again.
Fingers crossed it will do the trick


-- Edited by cadillacman on Saturday 16th of May 2009 02:54:21 PM

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Guru

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Posts: 758
Date: May 16, 2009

Forgot to say " god i need a pint" after today

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Veteran Member

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Posts: 52
Date: May 16, 2009

hope you got her fixed cadillacman thumbsup.gif

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Guru

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Posts: 758
Date: May 16, 2009

Been out for a drive, to out some petrol on, all looks well, a minor leak on the sump however will take a look tomorrow......

BRING ON THE SHOWS!!!!!!!!!!!!!!!!!!

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