cookstar

iTrader: (6)

When i start the car from cold, i get a seconds worth of rattle, then it goes completly and nothing else to be heard.

Is this the famous "piston slap" i hear of?

Is it terminal.

If so is it best to be rebuilt before it goes completly or just run it for as long as poss.



Cornelius - group buy on 2.5 maybe

baz69birds

GOD not another POORLY scoob

John1uk

ive had piston slap since i bought mine cookie.......and apparently some models have it anyway, mine is a my98 and knowsley said that year was renounded for piston slap, its not caused any problems to my scooby mate.

and i have had it since august last year.

cookstar

iTrader: (6)

cookstar

iTrader: (6)

That would be fine, if it had been there for some time, but when something just starts happening that says problems to me.

Good to hear you have had it for ages though, well not good, but .......AHHHH you know what i mean

Cornelius

iTrader: (2)

My car had slight piston slap mate, though this had nothing to do with the engine going bang, I'll put money that it's due to oil pump failure

Best thing to do is to have the compression ratios checked, it should be around 145psi on each cylinder, if No 4 Cyl is less than 120, then it's only a matter of time before the block needs rehoning.

the compression on my engine about 2 months ago was:

1 - 145
2 - 140
3 - 145
4 - 135

Do regular oil changes with good quality oil, and the usual stuff applies, don't rag the car until the oil is properly warmed up, always allow the engine to cool down, etc

cookstar

iTrader: (6)

Thanks Paul, can any garage do the compression test,

This is done where the spark plugs go isnt it and they are a biach to get to

Cornelius

iTrader: (2)

any good garage will have a compression tester, it's a bit awkward as you say, as all the sparkplugs have to be taken out.
But you get a good idea of the condition of the engine

Gangsta Smurf

Just do what I did with my first scoob which had piston slap dude .... turn the sterio up - then you won't hear it!!!

Drove ... sorry ragged the **** out of .... that for 40,000 miles with P.Slap and not a single problem with the internals of the engine.

cookstar

iTrader: (6)

John1uk

Cookie..my piston slap lasts about 1.30 seconds then all is fine...got used to it now and ive done 2 track days

cookstar

iTrader: (6)

I genuinly feel sooo much better for hearing this, i thought that was maybe it for me and scoob ownership

Cornelius

iTrader: (2)

if your piston slap only lasts a few moments, then don't worry too much, as John Said

WINSLEYWRX

VTEC to Turbo

Cookie

Get it checked out mate, could well be something other than piston slap.

I thought piston slap was only on 98 model cars! (Classics)

Better safe than sorry!

WRX_Dazza

good luck cookie, hopefully nothing serious.

might be a pump bearing of some sort, giving a clunk before spinning up.

does it happen just from cold, or from each new start?

dazza

JohnD

iTrader: (5)

If it only lasts a second or two, I doubt if it's piston slap. It would need to run a bit longer than that to expand the piston to remove excess clearance. It's more likely related to a part that requires oil pressure? Also look towards the cam belt tensioner?
JohnD

cookstar

iTrader: (6)

It only happens when engine cold/havent been started for a while.

And yep only last about a second