Oil in exhaust port?

[K11SS]

Anyone had this before?

If anyone knows the problem could you let me know the fixes available?

Thanks guys!

Pepper

 

[skymera]

Could be the valve seals

 

[Guy]

That's what I'd have said too. Is the exhaust fairly smoky?

 

[Stani1029]

Yeah like no stem seal lol

 

[frank]

Worn seals tend to draw oil into the inlet port (exhaust port is under +ve pressure eh)
Looks like a ring issue to me

 

[K11SS]

I've got the head from my old engine I could fit but if it's rings I'll be totally gutted! its an auto block with 42k miles on it so I hoped it would be "ok" but I could fit the head from my 105k manual engine!

Is it possible to do the seals in place without removing the head? I don't mind taking out cams etc but it'll be alot of work doing the head cause the inlet manifold is diff and I'll need to refit that too

Pepper

 

[frank]

Paul (polly) did his in situ, but its a mission keeping the valves shut tho (he fed string down the plugholes iirc !)
And the rings are usually not actually worn, but gummed/trapped in their grooves (lack of oilchanges i guess)

 

[K11SS]

The spark plugs were black when I removed so your prob right! I'll drive it and see what happens!

If this is broken I got no idea I'll even progress with the car, just so deflating!

Pepper

 

[K11SS]

Got the car home after a 5 mile drive and there was very little to no smoke!

Does Engine flush thin oil when it's used to clean out the engine? I used new oil and Wynn's... Maybe it could have been thinned and passed through a seal?

Can't really check now but I'll keep an eye on oil level and check the spark plugs tomoz!

Thanks guys!

Pepper

 

[Guy]

Possible. I'd never use oil flush, if you change your oil regularly, a flush isn't necessary .

 

[Belly93]

did you drive with the flush in?

 

[K11SS]

I did not drive with it in, just 20 mins at fast idle. I used the flush because the engine I was fitting was sat in a wood store upside down for 1 year and wanted to clean it out before I drove it anywhere!

I'll keep an eye on it but if need be I will have the engine out again lol

Thanks for your input guys!

Pepper

 

[Belly93]

Just running it with a flush in cam damage seals so ive been toold

 

[pollyp]

Worn seals tend to draw oil into the inlet port (exhaust port is under +ve pressure eh)
Looks like a ring issue to me

at page 1 middle of post #24 of my blog, my first original engine with the new head i got off goldstar actually had a crack/chipped section in the head under the exhaust valve stem seal.
it would cold start normal n clear but once warmed, the thin oil pooling above would seep past the crack and I think the moment the exhaust valve closes and the fast inertia of the gases could've caused the oil to be sucked through n burnt constantly at idle and especially during high revs?

 

[pollyp]

Paul (polly) did his in situ, but its a mission keeping the valves shut tho (he fed string down the plugholes iirc !)
And the rings are usually not actually worn, but gummed/trapped in their grooves (lack of oilchanges i guess)

yep here u go

http://micra.org.uk/threads/pollymobiles-rebuild.35251/page-56#post-522099