Hello all,

 

I'm not one of the more actif member but I need help.

 

I was racing a 750 Gsxr when suddently my engine stifled and a hudge cloud of smoke follow.

I was in 5th gear and 6000 Rpm.

I then let the car go in neutral and bring it back home with a truck.

 

I then restart the engine ini my garage and the smoke was coming directly from the engine and the exhaust.

Considering the smoke from the exhaust I was thinking the driver (I'm french) side turbo was dead but I could not explain the smoke for the engine bay.

 

Yesterday, I worked on the car and this is where the nightmare start.

I jack up the car and there was oil all over the engine (driver side). This can explain the smoke coming from the engine bay (oil on the turbo and manifold).

I imagine then that the oil leak would be udge and maybe go into the euxhaust, that could explain the smoke on the exhaust.

 

So a friend started the car while I was underneath to locate the leak but whitout success.

I decided to remove the exhaust to check the turbo. When I pull the exhaust, oil was flowing like when you do your oil change !!!!!

 

The was oil every where, on all the exhaust pipe. I use a greddy TD05-16G turbo kit with external wastge gate and maniflod. Even the wastegate where full of oil.

 

I so think it was the turbo damage. I pull of the turbo and he as no play at all and worth there is no oil at all on the admission side of the turbo. The intercooler hose are completly dry.

 

Then, It can't be the turbo. I inspected the exhaust manifold and it was oily.

 

At this time, I was thinking oil is coming from the engine. I pulled 2 spark plug on the driver side and they were full of oil. The other side was dry.

I decided to pull the intake manifold and when I remove the balance pipe, I could see oil in the passenger side small hole. In fact there were like half a inch of oil sitting on the intake manifold. But no oil on the intake hose.

 

I stopped at this point yesterday.

 

I will take my compressions today but can this be a diagnostic of a dead piston? (I have Wiseco piston).

I also have this PCV race upgrade:

 

http://home.swipnet.se/e-solutions/StillenPCV.html

 

I was wondering if the oil on the manifold coupld not have come from the PCV and then going onto the engine and the exhaust.

 

I also have to mention that the car was starting normally and running. There were no strange noise at all.

 

Any help from specialist will be welcome :)

Dip stick popped out? common cause of oil over the engine/ turbo

Robertz

no, dip stick stayed in place.

 

Oil was coming from the exhaust maniflod and as there is smal leak on the exhaust, oil was blowing out from there.

hole in a piston maybe :(

 

sorry to sound negative but im sure its not a cheap one.

do a compression test as it could just be head gasket !

I have metalic head gasket.

This happend to me about a year ago. The plenum filled up with oil, exhaust filled with oil but my dipstick had come out from the blow bye into the sump. I did have a piston go also had a valve go aswell. I never thought a car could smoke as bad as these zeds. Do compression bud first then cross your fingers;)

You seem to have too many conflicting issues. First the engine runs and ticks over - If you had a holed piston it would not run very well if at all. Oil on the outside of the engine is strange but might fit the holed piston possibility by blowing out oil from burst or pushed out PCV hoses. Oil pipe feed to turbo broken might have explained outside engine mess by spraying oil directly on to hot turbo? But if its inside the exhaust then it points to exhaust side turbo seals gone in a big way or the holed piston again and wet plug on 2 supports this. Which ever it is it sounds expensive sorry!

 

Maybe classic case of inadequate fueling for raised boost pressures melting and holing a piston?

sounds a bit like what happened to me when my piston rings failed

 

oil in the intake, oil is getting past the piston and into the chamber

Quelque chose s'est cassée à coup sûr. Cela doit être le piston, l'anneau de piston ou l'échec de sceau de pied de Valve. Si pas alors c'est le sceau de pétrole de turbo de consommation. Le sceau de pétrole de turbo aura quitté beaucoup de pétrole dans les interseaux à glace. Le piston ou l'échec de sceau de pied de Valve ne pas.

 

Que jamais il est cela semblerait que le moteur aura besoin de partir malheureusement. Bonne chance

 

Hope my Rubbish French is understanderble

update:

 

I did a compression test on the 6 cylinders and the result is:

1- 10

2 - 10

3 - 7,5

4 - 9

5 - 9

6 - 0

 

So i pulled the engine.

I don't know yet if it's the head or a piston problem.

Tomorrow, I pulled the head of the block.

here is the problem:

 

Ouch!

At least you seem able to do these things yourself, or it would be an even more expensive problem.

 

What would have caused that? Hit a valve?

woohoooo hole in a piston :D

I thought you'd pop up again LOL.

sorry i shouldnt really be cheering, well more excuse for a nice fresh rebuild :D

EDIT: oops posted in the wrong thread what a donut :(

Edited August 24, 200817 yr by j1mmytt

Didn't he rebuild the lot just recently?

yes I did...

 

I damaged a rod last winter (around september)...

 

I changed the rods and now piston problem...

Feel gutted for you

my engine also blew up for the second time this year just two days ago!

but at least you can do the work yourself and save some ££££

 

good luck

yes but maybe it's because the job is not well done that my engine blow each year...

That almost certainly looks like detonation damage.You need to get to the bottom of the cause or it will happen again.

can it be an injector problem?

have you got a afr gauge, as you might be running to lean at top end,you need to recheck ur map and timings on full boost at top end of revs

I have 2 AEM Wideband and 2 EGT, 1 per side.

 

Everything was fine. AFR was around 11 on each side and EGT was around 850° on full boost.