stewyhambo

Guys im fairly new to the impreza so sorry if this is a silly question. When had the bonnet up on car and engine was running there is a fast ticking sound which i located to some kind of small valve perhaps solinoid???? Its a 1997 impreza uk turbo. When engine reved it ticks faster!! Is this normal?? Any ways to cure it??? Cheers

simog

iTrader: (1)

Where abouts does the noise come from and does it go away when the car is warm?

Boost solenoid ticks, but I don't think it increases in speed with the engine.

My old 97 UK had piston slap, which is a ticking noise....makes the car sound a bit like a diesel when cold. Should go away when warm though.
Think it is to do with one of the pistons being ever so slightly smaller than the rest (think No.4 piston) and they were made from a different material to the phase 1 engines. Expands when it warms up which is why it goes away as the engine heats up.

As long as the oil level doesn't drop, then it should be ok, just a live with it noise!! There is a way to fix it, but if memory serves, it was about a £600 fix!

Others on here should be able to confirm/add to the above.

Best thing to do would be to make a sound clip and post it...guys on here are great at fault finding that way!

Shmerman

iTrader: (14)

Some injectors are noisey......

New_scooby_04

iTrader: (4)

Driver's side suspension turret?

If so, boost solenoid: more of a worry if it stops ticking!

APIDavid

iTrader: (4)

Agreed ! you're getting good at this stuff NS.

David APi

Agents for Simtek, the most exciting new Ecu for years

andyxros

i have simalar one on mine it stars to tick 10 seconds after idle then when reved it gose off then at idle its there again after 10 seconds there is a little valve wi two small pipes off it one of which gose into throtle body and the valve is located under throtle body quite hard to see without intercooloer off ts done it ever since the re map think its called a purge valve dont think u can do owt with it am putting up with it till i can sort a new one out.. if it is this then not much to worry about cos ive had it ticking for about 8 month and still ok.....

stewyhambo

Cheers guys been told that it is the boost solenoid valve. Should they tick?? i hear you can clean them out????

APIDavid

iTrader: (4)

They do tick, they're s'posed to. They can transfer the noise that they make naturally into the frame if the little rubber mounts have gone hard. They have a steel tube inside the rubber mounts and when the rubbers go hard the steel tubes can transfer noise. Take the tubes out and just sensibly tighten the screws onto the rubbers and the noise will stop.

No need to clean out unless you have boost control issues.

David APi.

APIDavid

iTrader: (4)

That's the PCV valve which works the crankcase breathing system when recirc is used. lt can be deleted if you go over to a catch can type of arrangement and let the engine breathe out to atmosphere.

OR you can pay the stealers a pile of money for a new one.......

David APi

andy scooby

hi had EXACTLY the same problem and all it was was a spark plug had broken down and just replaced all the spark plugs and everthing was fine after that..........no more ticking etc

andyxros

thanks for that APIDave might have a look in to doing that at some point just stange that it started after vf35 and re map

(p.s this wasnt an intended hijack lol)

APIDavid

iTrader: (4)

If I am anywhere near right, it could be explained by working something ahrder suddenly that is jsut not up to the job. IF I am right.

Good luck David

andyxros

sounds good to me as well cheers...