Smoking

[timmy.tuck]

Hi all

I had my 2004 z engine rebuild 2 years ago it's only done 2500 miles since rebuild and its smoking on start up I'm gutted, (It was rebuild by a "specialist" ) I've had the plugs out and inspected the top of the Pistons and the left bank are all wet and black. I can't face lifting that lump out again.

My question to any engine builders out there is can you replace the valve seals without lifting the head ?

Any help would be appreciated .

[Keyser]

I believe the answer to your question is no - head has to be removed to replace the valve seals -

 

 

2 years is not a long time, unless of course you have done 120,000 miles since the rebuild, you sure it is valve seals/rings and not something else?

 

Is it good old black smoke or is it white, does the smoke smell oily?

[timmy.tuck]

Hy Keyser

Only done 2500 miles ,it's not blue or black smoke more like a grey white smoke but doesn't smell sweet so not antifreeze ,not losing water and tank is clear .

Could it be leaking Injecters ?

Thanks

 

[Keyser]

Could be a rich mix.

 

Is it only at startup or under load gear changes as well?

 

2500 miles that's not even run in yet!!! Has it been parked up for a while? My first idea would be an oil change and a dam good run to get everything moving again, could just be sticky rings

[timmy.tuck]

Start up only it isn't stood for more than two weeks and I never leave it ticking over always start and go and it's had three oil changes millers running oil 200 miles and 700 miles then fully synthetic. I'll sort a leak and comp test and see what that comes up with .