engine knocks

[BKY]

started the surf up from cold noticed a rattle/knock coming from
the top end very loud at 2-25oo rpm but noise gone when hot
anyone got any ideas ill need to wait till its cold to check by the way
does the "92 2.4td have hydrulic tappets?

ANY IDEAS GREATLY RICIEVED

[Hilux]

Knock

Might be your "INJECTORS" does it start easy enough.

[Guest]

started the surf up from cold noticed a rattle/knock coming from
the top end very loud at 2-25oo rpm but noise gone when hot
anyone got any ideas ill need to wait till its cold to check by the way
does the "92 2.4td have hydrulic tappets?

ANY IDEAS GREATLY RICIEVED

Depending on whether you have a 2LT (only some of them) or a 2LTE you will either have screw adjustable or shim adjustable tappets. Most of them (Koi's is a 2LT with shim tappets and mine is a 2LTE with Shim tappets) are shim tappets and you will need to measure the gap and get some new shims from Toyota.

How long since you changed the oil, you might have good oil pressure but that doesn't mean the oil is actually getting anywhere. Also what grade of oil are you using. The tapping could be the top end running dry. Quick check for this, throw half a pint of oil into the rocker cover and then start the engine from cold - if the noise goes, change the oil and filter.

Cheers

[BKY]

thanks for the info guys
dont no what oil grade serviced when i bought it due a service anyway
so ill change it for good stuff