hog

hi
my engine is only boosting up to 10 psi (was 21 no probs) stage 2 chip with greens ,3 bar map,071 plugs, grp a coil , etc , when it happened it felt like it had popped a hose of the intercooler as that happened last year , all since replaced with new , but i have checked all of the hose conections and are all intact , no splits found ,all clamps on tight , so after some pointers on what to check next , is there anyway of testing the actuator ? or should i be looking else where
cheers

cossie daz

had same sort of thing on mine,my throttle body had worked itself loose and had air leak.
Im no expert so hope this helps could be a air leak some where ,most likely hose's.
hope this help

BigErn

maybe dodgy amal valve. switch ignition on to the "reds" then go under the bonnet and take plug off the valve and re fit it, it should it click as it activates. Worth a go.

tabetha

Could be plugs breaking down(being blown out) under boost as well.
tabetha

hog

just checked that , when turned on ignition i hear it click , but not when i disconnect it and put it back on with ignition on , it s only 6 months old so i hope it aint failed already , i have a spare knockin about somewhere so i ll dig it out and check if its the same or not , and all so recheck all hose s and inlet
cheers

hog

plugs are 071 s gapped at 0.7 , been fine for 8 months

BigErn

try it while it is idling mate usually they click everytime it is plugged back on as it powers up iirc.

hog

will try tommorrow as its in the garage below my sons bedroom
cheers

hog

ok checked amal valve when running and it clicks when you reconnect it , so i ll strip down the boost hose s and check for any possible leaks

AndyPen

iTrader: (24)

Could the actuator be going off song? Just a thought but mine couldn't cope and had to replace it when the car was first set up.

tabetha

After the recent spate of DUFF 071 plugs, I would try some different ones, like Iridium plugs, they run so much better on these anyway.
tabetha

hog

all boost hose s stripped and checked no cuts/bursts found,all hose clips ok , throttlebody checked not loose , i have a spare set of plugs and actuator so i ll try that next
cheers

hog

update time
i have since found that the viper airfilter im using had been fitted the wrong way round and sucked inside out and blocked the air intake pipe , now im guessing this was my original problem , have now sorted it out , but still only boosts to 10 psi , so im guessin i may have damaged somethin else as i drove it back from a trackday like this for 80 miles ?? ive tried 2 sets of other plugs / my spare amal valve and have just fitted a new actuator still no joy , car drives smooth and picks up fine no smoke nothing boost flys up to 10 then no further , so feel free to suggest anything ive not done yet and i ll give that a go
cheers

LHD220Turbo

iTrader: (4)

air leak somewhere?

jon@work

iTrader: (5)

dump valve diaphragm split ?

KSA-Cossie

iTrader: (4)

What guage are you using to read the boost m8 ? Does it feel slower ?

hog

air leak somewhere?

have stipped down all boost pipes and intercooler and checked for any visible splits etc nothing found , all hose s less than 6 months old and using the proper hose clamps, how can i check for airleaks with it all piped up ?

dump valve diaphragm split ?

not sure how to check this one , its a bailey dv36 , i did try with the original cossy one and it was exactly the same , but if there is a way to test it i ll do that or take it apart ?


What guage are you using to read the boost m8 ? Does it feel slower ?

using a tim 2 bar gauge and have tried a spare psi gauge i have and both read the same 0.7 bar and 10 psi ,and it s defo slower still quick but no where near what it was
cheers

KSA-Cossie

iTrader: (4)

Bailey is a piston type so not that,can you try another amal valve ?

LHD220Turbo

iTrader: (4)

check the inlet manifold; quite common for air leaks there; especially if you are using things like dump valves and boost gauges. Also check the throttle body as i have heard of these becoming loose and air leaking

hog

yea i tried my spare one , it aint new and im not sure if its a worker or not as it came in a box of spares when i bought the engine , so id have to buy a new one to be sure they both click when unplugged with engine runnin

hog

check the inlet manifold; quite common for air leaks there; especially if you are using things like dump valves and boost gauges. Also check the throttle body as i have heard of these becoming loose and air leaking

ok will do i did check the throttle body earlier in the thread but will do again it has all new cometic gasket kit when rebuilt last year

KSA-Cossie

iTrader: (4)

Air filter to turbo boost hose collapsing ?

hog

could be its in 2inch ali tube from filter with a short piece of flexi tube(came with the viper kit) then ali tube to a 90 deg silicone hose on the turbo , so will try and do away with the flexi hose and re check
cheers

KSA-Cossie

iTrader: (4)

Keep us posted m8.

R5FORD

iTrader: (1)

sound slike amal valve to me.. mine did the same thing.. put a bleed valve on and worked fine so got another amal valve and worked spot on

hog

ok will check through at weekend and report back
cheers

hog

maybe light at the end of the tunnel ! had it all in bit s again checkin through everything inlet manifold tight,throttle body tight etc , when checking throttle body i noticed that one of the little black hose connectors on the side of the inlet manifold looked like it had been screwed in on the piss and cross threaded , so i have taken it of ( came out very easy) and the thread is all chewed so have fitted a spare one i had from my box of spares , and sealed with thread lock , and have done the same with the other 2 , as they did nt seem that tight , so i ll have it back together tommoz for a test , so could this have been my problem all along ?

hog

well still no joy all back together and re tested , still the same , allso fitted a new amal valve from burtons ,made no differance , tried with air intake hose disconnected , still the same , so all i can think of doing is getting boost hose s pressure tested along with intercooler and taking off inlet manifold and fitting new gaskets ? unless ive missed owt else ?

LHD220Turbo

iTrader: (4)

where abouts are you in the country?

doctor stavros

have you checked ALL vac pipes as well as boost pipes for leaks?

hog

manchester !

LHD220Turbo

iTrader: (4)

if all else fails, MSD arent too far from you, they are in Blackpool

hog

i changed the one from amal valve to actuator for a new one , have nt checked the other one to the turbo , will do though
cheers

hog

yea if i dont get anywhere soon then thats what i ll have to do

TOMMY_TURBO

di you ever find this problem exactly the same as mine is doing

johnyjn

iTrader: (1)

Just try a blanking plug for the dump valve and the dump valve vac pipe don't replace with a standard valve . Had a problem with a bailey dump valve last year the piston was sticking open on boost !

bigad4x4

had a problem on mine last year would only boost to 11 -12psi i checked everything, andy came round and found the problem in 5 min SPLIT INTERCOOLER (pro alloy) had it welded job done