No boost - over fueling - HELP
Turbo Mini Forums

My Turb is not well.

It's smoking like its over fueling and won't boost above 3psi.

But if I use the bleed valve I can get boost to 10psi easy but in 3/4 gear she splutters or dies so I have to ease off. Hence no bleed valve in use and only reaching 3psi!

Tried fiddling with the regulator and mixture screw but still no joy!

Can anyone shed some light on this?

So did it ever run properly ? Does it run properly off boost ?

And using a bleed valve to try and turn the boost up on a car that already runs very badly....is really asking for trouble. Prepare to blow thy engine up with that approach.

Edited by stevieturbo on 16th Mar, 2014.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

Could be the actuator set up wrong, which would explain the low boost, but higher boost with bleed valve.

Also if its smoking from being rich it must be really rich, have you ever had it set up on a rolling road, or do you have access to a lambda sensor?

Also, what fuel pump are you running?

It's a new build 1293 turbo t3 running on mega jolt and an intercooler. Bleed valve in line but not in use. Not had the carb set up. However my next I tensions are to hand it over to a rolling road to get it set up.
Not sure what fuel filter it is but seems to be pumping threw well!
Also not sure if the regulator could be buggered? Such a long list of could be's!!!
Got any ideas why the breathers are leaking oil? On tick over it breaths loads!!

A lot to go at I know (sorry)

I think a better question might be.

Where can you recommend I take the car to to get it checked out near Bridgnorth ?

And if the breathers are chucking oil, the engine is maybe screwed already !

It needs someone competent to take a look at it asap, as trying to do this remotely is going to be incredibly difficult.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

As Stevie says if the breathers are spewing oil then the engine is in poor health and probably that is why it is smoking.

If it's a new build and you haven't had it set up properly, it could be that the over fueling has caused the bores to glaze up before the rings properly seated, meaning you get lots of blow by and smoke out the exhaust. I had the same symptoms on a fresh 998 build, and I'm pretty sure that was the cause.

First thing to do will be get it to a rolling road, but if the bores have glazed up, there's not much you can do about it with the engine together

http://www.turbominis.co.uk/forums/index.p...tid=469104&fr=0

I've got it booked in for rolling road next week I was just curious on the possible causes of this. Hope I haven't gotta rebuild it again Spose will have to wait and see :/
Thanks for your thoughts, gives me an idea of what's going on.

You would be well saving your money on having someone competent inspect it before booking RR time.

Unless the RR operator isnt going to charge if the car isnt deemed fit to actually test.

And is wherever you are taking it familiar and competent with such a vehicle ?

Edited by stevieturbo on 17th Mar, 2014.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

The company is aware of the problems I've got and recommended to me by a classic motorsport racing team. The are booked in to sort the carb out and/or any other issues I might have. They can also do mega jolt which is a bonus.

i suspect you have run this engine hard and not set up at all hence your piston ring lands have craped out on one or more cylinders, with the story above, i would advise you to check your compression on all cylinders to comfirm this, also to save you time and money on the rollers