my99 uk impreza now pulling my hair out
 

Ever since buying this car its been trouble . in the first hour tyre went bang on motorway . week later a new maf sensor then it runs ok 4 a bit but now,it has a surging problem under 4000rpm it had so many new parts im sick of it.
NEW PARTS IN THE LAST SIX WEEKS
1 new maf again , and no it on a apexi panel filter .
2 o2 sensor subaru part
3 ht leads
4 coil pack
5 knock sensor
6 fuel pump
7 full service ie cambelt plugs
8 td04 turbo
9 lots of other silly parts ie gaskets pipes .
i thought when i got this car i had got the right one 70000miles mint condition engine rebuilt with proof . full subaru service history now im gutted . subaru has not been my best performance car . any help please :brickwall

well wot can you say to that hope its not a wagon as well

no not a wagon mate i thought i would put a post on here . some one might know whats going on or its off to a tuner .:wonder:

maybe tell us a bit more. have u changed plugs recently? and if yes were they torqued up correctly?
also ur panel filter is it a dry cotton one or an oil type one?

hi mate yes dry filter and plugs are new and torqued up ngk,s when driving on part throttle it feels like your pulling the hand brake up and down slightly when boost comes on wot it has a hesitation then goes as it should im puzzeled now:wonder:

dont give up m8, tbh the mafs are shocking on my99 i replaced mine three times!! first two were my fault (oily panel filter).

have u tried cleaning the boost solenoid?

yes m8 boost sol is well clean . it worse cold as well .

were the plugs gapped?

its worse when cold, is it more difficult to start when hot or cold might be worth changing coolant temp sender

it starts no prob idles no prob plugs i thought thay should be gapped allready maybe im wrong

Does it do it all the time...?? or mainly when cold??

all the time m8 not as much warm but still happens

anyone???????

I'm sure you've checked this but thought I'd ask anyway. It aint something as simple as a partially blocked vacuum pipe, brass restrictor, etc?

sticky actuator thingy

think he's pulled his hair out completely now, should we all chip in for a cap then his head doesnt get cold,

btt for ya

i thought i would put on my manual boost controller just to check its not the boost sol but still same prob . and yes when turbo was put on all new pipe work with brass bit was used and yes im losing hair at no rate......

wot size cap do ya need

btt for ya

no cap needed yet . but i can feel the pub calling me i need a stella fix

i would seriously have a look at the plugs dude i know you say they are new but still could be faulty (or not gapped correctly) do you have the code on the side of the plugs... its just that you are having the exact same probs i had and when the plugs were changed it was like having a different car cos you are still expecting the hesitation and holding back feeling...let us know how you go....Justin.......

going to get plugs out tomorrow and have gauge up on them 0.7m i think cheers for your help i will post back asap:thumb:

Spark Plug Torque
 

Sounds like the exact problem I am having. I'm fitting my new plugs this weekend. new leads will arrive next week.

Could I hijack this post and ask what torque the spark plugs need to be?

cheers J.:thumb:

ok took the plugs out was gapped to 0.7mm still have the same problem getting worse when cold. but still have the same prob when warm aswell surging and hesatation at about 3000 rpm

anyone got any new input

Take it to a specialist before you spend more money on things that probably aren't required.

i know your right but im down in kent and big lack of good specialist around :brickwall

What's your place like at fault finding Zen? Is there any way you guys can check for air leaks or exhaust leaks?