as above does any one have any tips on finding a boost leak so far ive changed boost hoses and vacuum pipes.Next im going for vacuum pipes for the amal valve and then actuator when it turns up..After this im lost as to where to check so any help please

 

Boost gauge ? also check the inlet manifold gaskets they can perish and create a leak :P

 

i took the boost gauge out of the system and it was still there i will get some new gaskets and give it a go im running out of ideas

 

Yeah mate deffo give the gaskets a go only a few quid so worth a try, do you run a dump valve.

 

yep took that out aswell doin me nut in now

 

What exactly is happening, just leaking all the pressure when you drive it ? or not starting at all...

 

leaking when i drive it coughs when im going down the motorway ive done leads plugs dizzy and rotor arm doing timing belt next and then actuator do you know a rough setting when swapping a standar to a - 31?

 

what do you mean rought setting ? to set the boost up you mean

 

yes ive read standard is half a hole so do i start there or less as its a -31

 

as i said to someone yesterday for standard boost you want a little tension nomally half the dia of the wastegate pin shows without tension so you need around 5mm ish to pull over!? if you get what i mean!!

also check the throttle body gasket dude and the pipe to ecu on mfi aint there!?

 

doh beat me! lol more boost you want actuator arm shorter

 

ok thanks and ive changed the pipe to the ecu aswell

 

hi
i use easy start for diesel engines
on idle i spray it around the pipes and gaskets and again with the revs upted a little and repeat if i find nought at idle
your looking for a change in revs if its leeking its enduced into engine and leak found
take care around the hot parts and always read the safety info on can
another loss of boost not mentioned above is the housing of the turbo where it bolts via 4 nuts and studs to the exhaust manifold its quite common for the housing to crack but you need to remove the turbo and look in this join on the turbo side and see if its cracked this is a classic for boost loss and people try for ages looking for boost leaks but you have tobe sure and put the labour in removing turbo
hope this helps in some way
mark
ps i have had a beer lol

 

To adjust the boost pressue you need preload on the acctuator the more preload you have the more boost you run,

 

Have you checked the cooler? You may have a leak there...

 

you sure its a air leak?
block the breather return and bung the metering head,if it runs the same its not an air leak,if it runs better,then you defo have an air leak