big_pete

im needing some help, i have a 1996 uk turbo estate (i know stupid for buying uk model) its been fitted with 3" turbo back exhaust and dump valve.

right to the problem. when ever i try to open it up it keeps cutting out and "splootering" best way i can think to describe it. it boosts briefly then dies, it still reves up but dont have boost. i fitted a boost guage today and noticed once it hits 0.5 psi it cuts and plays up but when it ticks over it sits at less than -0.5 is that right?
im new to impreza engines i have no problem doin the job to fix but just have no idea whats wrong with it. i replaced 4 coils fuel filter plugs the lot just hit a wall with what to do.
and advice would be much help

pete

beario

could be boost pressure solonoid on drivers side inner wing code 45...thats what mines was doing,but mines jumped the cam belt teeth aswell...

kevin wrx

iTrader: (1)

boost soloniod is the best thing to clean and check and check the fault codes if there is any stored codes

kevin wrx

iTrader: (1)

did u gap the plugs to the correct size.

big_pete

ye i gap tested the plugs, was bosh super 4s i fitted. what would be best way to clean it? i will strip off wing and do it tomorow. its not coming up with any fault codes i had them checked last week

dabow

iTrader: (19)

theres your problem there mate. the plugs

you need min of ngk platinum set to 0.7mm spacing

dabow

iTrader: (19)

your car should be runing fine, untill you give it some beans.
if slowly powering, it should work.

the bosch plugs are not for turbos motors.
i did this when i first got my scoob, years ago

big_pete

ye i just took car out a run just now to try work things out with it. it runs fine till you put foot down, its ok(ish) at half throttle, splooters a bit when you rev it hard. dames family run a garage nd not 1 of the boys there could help me, got told was head that was buggered then told injectors both were fine. il get new plugs tomorow for it. would it be best to check boost pressure solonoid aswel?

cheers boys for the help

dabow

iTrader: (19)

change the plugs first mate, dont do anything else till that ok mate.

again, ngk platinum 6bs min, dont bother with the iridium ones, there rubbish.

big_pete

magic cheers for that bud al do it tomorow

dabow

iTrader: (19)

its all down to elimination, i suspect the plugs.
you said you changed the coils, id have said check them first
then the boost hoses, check for blockages
then after that, the boost celanoid ect.

get them plugs done, 0.7mm and see who that does mate.

f4la k

iTrader: (1)

Get ngk's= pfr6 or ngk's= pfr7. Stick them in exactly how they come out the box, no need to touch the gap and if its no better clean the boost solinoid with some brake cleaner and then give it a spray of wd40. Is your solinoid a 2 port or a 3 port, if its the 2 port you should get a 3 port and put it in as it controls boost alot better..

dabow

iTrader: (19)

erm, yes do check the distence.
and to use a 3 ort if fitted with a 2, you need a remap to work.

he will have a 3 port, being a 96 inpreza, 7bs are only needed for high boost aplications. not a standard set up, the only differnce form the 2, is they run cooler.

ive had a lot of sets of these plugs, and it is still advisable to check the spacing, for optimum performance

chtpcpo

iTrader: (11)

MAF sensor (Mass Air Flow), that sounds exactly like the problem i had about 2 months ago

dabow

iTrader: (19)

a maf sensor goes can do this. but the main issue if stalling.
same as if the car struggles to start, the course is the coolent temp sensor.

i still recon, once them plugs are changed, the car will run better
hope he puts up what the out come is.

dont want to put any info out, as scoobs are very tempamental.
but i've had a lot of issues with mine, and thats called exsperence as ive managed to solve everyone, and got loads of advice from scoobynet

big_pete

iv not changed plugs yet but took it a drive to day and does sound lyk its not sparkin right, its as if she is struggelin to get a spark, as u said it drives fine at half reves but as soon as i hit 0.5 bar it struggles. cleaned out boost pressue sensor made no change. il go and order the plugs. and let you know result once its done. oh its not maf sensor had it checked out to and its fine.
cheers again boys for the help

big_pete

right i have changed the plugs its runnin bit beta but been told maf sensor is playin up now so got new one comming tomorow i hope

big_pete

changed maf sensor now and its still playin up and wont run smoothly. am runnin out of ideas of what it can be just had to pay out over £800 this month for parts and gettin brakes done. just need to know what it is so dont need to keep throwin money away

midnight

iTrader: (10)

What make of dump valve do you have fitted , as these can be prone to give the symptoms that you have listed,when the springs start to weaken. Might be worth buying a std recirc and giving that a go.You can get one for less than £20.00 and it might be an easy fix.

Also nothing wrong with buying a uk model as you dont have the worry about using uk fuel,and the parts are more readily available too,along with cheaper insurance.With a few sensible mods you can make it as faster than a std sti

big_pete

its a baileys dump valve was brand new 3months ago, could that be stoppin it powerin and stutterin? the car was bog standard when i bought it, had heard something about dump valves giving it problems,

nuclearbot

Get the standard DV back on, baileys ones are for asswipes that like the loud noise

alcazar

iTrader: (2)

+1 for dumping the Baileys dump valve. Get the recirc one back on pronto.

big_pete

i put standard 1 back on and no change after a while playin found the waste gate was hard shut adjusted it and it runs better just need to fine tune it now

big_pete

i still cant get car to run right, if anything was wee spot of luck with waste gate but went back t usual now if not worse and still cant get any where with it. more symptems happenin now. when sittin still reve it and hold it and it keeps cuttin back and not firen right stutters when trying to hold reves above idle. its gettin to point im struggelin to overtake a tractor. go to pull out and overtake and cuts out power and stutters. as soon as you go over 0.5 boost it plays up. its drivin me bonkers and no garage round me is helpin. changing dump valve never done a thing.

possible things im thinkin off

turbo be buggred?

acctuator?

timming?

cound havin straight through be doin it?

intercooler blocked?

injectors?

any help would be good help, dont have space in my garage at moment to work on it as it got burned down last week with all my tools in it. (fathers wiren skills)

cheers
pete

musso2010

I'd deffo check the timing, just to rule it out for peace of mind. Ive heard of some belts being 1 or 2 teeth out, and still running but very badly.

Is there any smoke coming from the car? Maybe try having the compression checked aswell to rule out engine damage.

big_pete

theres just white smoke comin out exhaust, done compression test and came back all had full compression. i went 2 a garage 4 advice yesterday (both owners have imprezas and rally them) goin to cost £250 just to look at it and c what they think.

musso2010

£250 just to have a look id avoid if i was you. One thing ive learnt since i bought my impreza is that every garage things you have pots of money and thus try and shaft you every chance they get. I only take mine to subaru specialists now. Are you loosing water at all?

big_pete

ye am loosin water its keeps spurtin out expansion tank.ye my x dames family ran big garage in town and not 1 even knew where to start with it. cos dont have my garage just now went to subaru breakers garage and was £500 to change disc & pads all round got shafted and would normaly do it mysel. its a joke. love imprezas, had a 2l sport when i was 18 and loved it to bits got turbo now and its nothin but hassel but dont want to sell her

musso2010

It will be worth it in the end when its running right trust me. Im also having loads of problems with mine at the moment.

If you have water spurting from the expansion tank then im sure that means you have a head gasket issue. Dont quote me on that though, cause im pretty new to subarus. Try doing a search for it. Other than that, check all boost hoses and pipes for leaks. A pin hole can cause loads of problems.

Hope you get to the bottom of it mate

big_pete

ye hop it runs right soon, i thought it might have been head but its been tested and its ok (i think) the car has 170k onclock. im fillin it up o water once a week i put a head gasket treatment through the coolent system to. took boost hoses off cleaned through with break cleaner and wd40 made no change. cheers 4 help bud