flat4 to the floor

hi all
just need a little advice on this one.
i have a tapping noise coming from the back right cylinder (looking into the bay from the front)
i can only describe it as and this is where some may not know what i mean.but it sounds like the typical ford cvh engine tapping rs/xr.now this could be the bu!!5hI7 part i have been told that ej20 have shims taht can be replaced to stop this tapping is this true? if so easy to do or not.if not true any ideas as to what this tapping could be? many thanks for any replie and advice.

roscop

it may be a noisy injector.

"Taylor"

iTrader: (2)

I've got a noisy tappet as well and would like to know whats exactly involved in replacing them.

merlin24

iTrader: (1)

Check the spark plugs first - you will get a ticking noise if they are
not tightened correctly.
If you have a UK spec engine,they have Outer Shim Buckets and with the Service tool - can be done with the engine in the car.
STi have Inner Shim Buckets,so the cams have to come out to reshim.
Some Vers 1 and 2 had Hydraulic Lifters which sludge up over time - cams have to come out to replace/strip and clean the Lifters.

Mick

"Taylor"

iTrader: (2)

I've got the version 1 wrx, so it sounds like a bit of a major job Gutted, i had the engine rebuilt last year as well. Sods law, why didn't they tap before, i could have had them changed while the engine was out then...Grrrr Its got to be done though, it usually goes away 9 times out of 10, but sometimes taps really bad even when the engine is at full operating temperature.

flat4 to the floor

merlin24 thanks matey you have confirmed what i thought may have been the bull.mine is a uk spec so glad you mentioned the difference between the two.any ideas how easy this is to remedy?

"Taylor"

iTrader: (2)

Thanks for posting up the topic and apologies for the slight hijack.
Also thanks to Merlin

dj219957

i had a tapping noise from where you describe on my 95 wrx. it was evident after i had a full rebuild. it turned out to be an ever so slightly bent valve. replaced valve and noise went

merlin24

iTrader: (1)

They are selective shims on the UK and STi,so you will need :
The Service tool to depress the buckets in order to remove the shim.
Micrometer or Vernier gauge to measure the shim.
Somewhere like API for the replacement shims you need.