some help needed again please!

[clouty]

hi guys was shifting a bit of soil the night only got 7 or 8 bucket loaded in the trailer when a loud knocking sound started coming from the top of the engine any one got any idea what it could be? it starts and revs up well but the knocking get louder and faster when it's revs

The night b4 i ran it all night doing ditching with no bother!!

Any helps good

[time travel]

hi guys was shifting a bit of soil the night only got 7 or 8 bucket loaded in the trailer when a loud knocking sound started coming from the top of the engine any one got any idea what it could be? it starts and revs up well but the knocking get louder and faster when it's revs

The night b4 i ran it all night doing ditching with no bother!!

Any helps good

Hi

Is it the sound coming from the front or rear of the engine?

Piston slap (off the top of my head)?

I hope it is something simple to fix!
John

[clouty]

hi guys was shifting a bit of soil the night only got 7 or 8 bucket loaded in the trailer when a loud knocking sound started coming from the top of the engine any one got any idea what it could be? it starts and revs up well but the knocking get louder and faster when it's revs

The night b4 i ran it all night doing ditching with no bother!!

Any helps good

Hi

Is it the sound coming from the front or rear of the engine?

Piston slap (off the top of my head)?

I hope it is something simple to fix!
John

sounds like its the top on engine??

[martyn williams]

Remove the rocker cover and see if there is any visible damage.Valves, pushrod bent.Hope its not too bad Excessive tappet clearance,perhaps an adjusting screw has backed off.That would account for the noise.
Martyn

[TEZB]

Have a look at the uj's that drive the pump

[FOWLER MAN]

If valve gear looks to be OK it could be a "Diesel Knock" caused by a faulty injector.
Run the engine with each injector pipe slacked off on turn, see if you lose the knock.
If not it will allmost certainly be a piston problem.
Fred

[clouty]

cheers guys ill have a look the day

i did start it this morning from cold and ran for a good 10mins and the knocking didnt go away

cheers

[martyn williams]

Don't run it in that condition for long as it may make it worse,and more costly
Martyn

[jcb1968]

have a read here
3CX perkins engine developes a hammer sound