bigz2345

could any body help with this problem... my car ran 32 psi it needed mapping so i drove it as it was at 32 psi it was a animal!!Today i changed intercooler to a airtech one and fitted the fans on the outside of it ..had a pipe made and fitted that .. now my problem is this.
i turned the boost down to 15psi.. drove it around it was fine and perfect.. i changed the intercooler and pipes and now it boosts to 15psi like the normal BUT it drops back down and holds 10psi .. so i checked pipes they LOOK fine..so i adjusted the boost up to 18psi ... now its hitting the normal 18 BUT dropping down again to 10psi when boosting hard.. im guessing its loosing air somewhere just cant see or tell where .. can it be the bleed valve ? any help appreciated

mgtkr1

actuator? have you a spare one, -31 pref -34 if running the higher boost bypass the bleed valve and run the hose from actuator to turbo, to eliminate the bleed valve.

fiend

iTrader: (1)

What clamps are you using for the boost hoses?

A pressure test will show you any leaks.

xr2wishy

iTrader: (2)

either a boost leak or a buggered turbo, 32psi is a lot of boost on an engine that needs mapping.
hows the actuator, may be the spring is worn out and can't hold much.

bigz2345

cheers for comments guys. the turbo is like new its mint. the problem accured after swapping the intercooler does any body have a leak tester the one that could be tested on the car ?

luke19790_3

mo, have tried fitting the old intercooler. see if the car boosts ok then?

mgtkr1

just realised you changed i/c. may have a pinhole

bigz2345

luke i could try that but iv sold the old intercooler now its gone lol

luke19790_3

Is the one you have now new?

bigz2345

no luke but it was mint and stored away for a year before i fitted it .ill put up a pic

bigz2345

luke19790_3

Looks like spec one

bigz2345

just an update.

swapped the bleed valve over
tightened pipes
tested the actuater
and still had the same problem which mean the intercooler may be loosing air. getting another though so will have it on there this week

bigz2345

guys i fitted a intercooler which came off a working car today and guess what its doing the same thing!!!! still losing boost feel like burning it

zetecbeast

pressurise the system and then wipe some diluted fairy liquid on boost pipes. And all joints etc. it will bubble where the leak is. Last tester kit I made was 3" bung with valve in the middle , tyre pump or compressor to pressure the system.

pee vee

Will that intercooler do much with them fans blocking most of it off.?

bigz2345

cheers for comments guys.. the mechanice has said the diaphram thing in the actuater must have split etc.. basically have ordered a new forge actuater... and pee vee .. the fans be on mate its wired up to a switch etc so not blocking air .. its a better set up than my old one because the car runs alot cooler tbh

pee vee

Thing is, if the diaphram has split in the actuator, it usually makes them boost as much as the turbo can. As the air pressure that's supposed to be opening the actuator to control the boost.. Is all leaking it of the hole.

xr2wishy

iTrader: (2)

Weak spring could be to blame.

bigz2345

peevee .. im not sure mate but it aint the intercooler,aint the bleed valve, aint the pipes so im hoping its definately the actuater as thats what the mechanic also thinks.. xr2wishy .. time will tell mate.. its a forge actuater with the alen key head on it. so will see if its that when its replaced.. cheers for comments guys

studabear

what management is it on, does anything look odd on the laptop?

xr2wishy

iTrader: (2)

It will be actuator though, more than likely, had it myself with a Collins actuator.
New spring sorted that

bigz2345

cheers for that xr2wishy.. hope its sorts my problem . and studabear its on omex 600mate

studabear

Lets hope it is the spring then, I had a idea it might b e on omex

bigz2345

lol