END OF TETHER WITH TURBO CUTTING OUT

[BENG900HUATURBO]

HOW DO CHANGED THE FUEL PUMP STRIPPED DOWN CARB TURNED DOWN THE BOOST HAS IMPROVED SLIGHTLY BUT WHAT NEXT GETTING PROPER P$%£*@ OFF WITH IT CAN ANYONE HELP THANX:( :giveup: :giveup: :banghead: :idea:

[Austin-Rover]

Can we have that again, but in English and without the SHOUTING?

What you have written there doesn't make sense.

[E_T_V]

When does the engine cut out?
If it is whenever it hits boost then:
Replace carb balance pipe then test.
If it isn't that check carb vent valve seals properly when the igntion is switched on.

Otherwise we'll need more symptoms to go on to suggest things.

[BENG900HUATURBO]

RIGHT IM BETTER KNOW
IT SAID
HOW DO, NOT IMPRESSED WITH MG TURBO THAT FEELS AS IF THE FUEL IS TURNED OFF WHEN YOU NEED IT MOST. IVE PUT ON A NEW FUEL PUMP STRIPPED THE CARB CHECKEDTHE PIPES AND VALVE AND STILL NO JOY GETTING A BIT FED UP.

[BENG900HUATURBO]

YES ME AGAIN MG TURBO THAT FEELS AS IF THE FUEL IS TURNED OFF WHEN YOU NEED IT MOST. IVE PUT ON A NEW FUEL PUMP STRIPPED THE CARB CHECKEDTHE PIPES AND VALVE AND STILL NO JOY GETTING A BIT FED UP. I CANT SAY EXACTLY WHEN IT DOES IT BECAUSE IT NEVER SEEMS TO DO IT AT THE SAME TIME BUT IT IS ALWAYS WHENIN BOOST. NO SIGNS OF LEAK ON THE BALANCE TUBE????

[G51 NAV]

There often isn't any visible sign of a leak, but still here is one. Try a different tube and report back

...and please turn off your caps lock, it's poor netiquette (I assume you don't know :))

[G Force]

Hi; you say that you have checked the float chamber vent valve is working and you also say the problem is intermittant. It could well be if the problem was due to the valve sticking intermittantly, that it must work some of the time and may have seemed fine when tested.

The best way to rule out the valve is to blank off the float chamber vent (AT THE CARB). You might have to put up with a bit of difficulty restarting when the engine is hot, with the vent blocked, but it will start eventually after a bit of cranking over.

You say you have turned down the boost, Have you got a boost controller or a bleed fitted and what boost pressure do you run? If it runs better with lower boost that could point to the float chamber vent if you can run lower than standard boost. Do you have a boost gauge fitted?

You should really check the fuel pressure against the boost pressure, Fuel pressure must always be 4.5psi ABOVE boost pressure.

Have you checked the pipe to the wastegate actuator for splits, as this can cause the engine to cut out or misfire violently as the carb can't supply enough fuel for unlimited boost.

What happens to the rev counter when the engine cuts out? does it read steady or drop to zero, or does it read erraticly.

Does the oil light come on when the engine cuts out? by any chance.

Gary:)

[BENG900HUATURBO]

hi
sorry didnt realise about the CAPSLOCK but yes tried 3 different pipes still no joy
cheers
ben