alright, i recently rebuilt my 3k. Did the whole lot the head, the rings, big ends and all the seals. The thing is every time i start it after it's been sitting for a while it blows a little bit of smoke, but it didn't do it straight away. The car has done about 800km's since the rebuild and can't think of anything. I forgot the colour of the smoke will update tomorrow but just wanted to see what people might think it is, a guy at work said it could be the valve guides, but that kinda means that the place that rebuilt the head didn't do them...please help....oh and i don't think it matters but i'm running this thicker oil stuff 25-50w i think

Edited January 18, 201016 yr by jono1986

sounds like valve steam seals,

 

i think valve guides will give you a abnormal idle like my car

do your usual tune up on it first.

 

Oil

plugs

check mixture screw.

 

pretty sure as the engine starts to "run in" you need to re adjust it all. maybe try that then see how it is?

if its a little bit of smoke on start up and non when you accelerate or drive, then should be good :dance:

 

Mine smokes a tiny bit on start up, 10 seconds later nothing.

Yeah my first idea was mixture, i mean under heavy acceleration it smokes but thats pretty normal for a carby isn't it? And we did mess around with the carby settings after the rebuild to increase the idle speed, but may have accidently adjusted the mixture screw. I have the manual will try tune it tomorrow