well i got a engine for the car real cheap. know the lad and car well, but was told when got it that the engine knocks on start up but goes away when warm. is this serious and what could be a matter with it

 

What engine is it as there are several different ones in the subaru range (and by that I mean there is the phase 1, phase 1.5, phase 2, new age etc etc etc), even better if you know what car it came out of though it could be piston slap but unless we hear it then its only a guess

Tony

 

its outta 1995 wrx

 

Could be either piston slap, big bearings away or crankshaft on way out!
Mine is the latter, just waiting for an engine rebuild.

 

cheers so i am f***ed either way

 

Is it a standard engine?

 

yeah it is nothing done to it

 

Not necessarily. Piston slap when cold is not uncommon and need not be serious depending on it's severity. It certainly needs to be listened to by an experienced mechanic, preferably with a lot of Subaru experience.

JohnD

 

ok so if it that how long will it last. dont fancy telling the gf gotta spend more on it

 

No way of knowing until it's been listened to! If it was the bearings, it would mean an immediate re-build/replacement.

JohnD

 

if it piston slap

 

I thought piston slap was only on 1997 cars? maybe that's just for the GT-Bs though. Mine has piston slap, it always gos away once warm (takes longer and is louder to begin with in sub-0 temps) and the car's on 160,000 miles and going strong. It really depends on how well the engine's been looked after but piston slap itself is not a problem.

 

ok cheers the lad did say it didnt sound bad just when it cold otherwise it fine. its the last thing i need aswell to get it back on the road