Engine noise when moving

[skandaman]

hi my 1991 3 ltr diesel surf runs well smooth uses no oil but now and then intermittently I get a clanging noise a bit like a bearing breaking up coming from front of engine it only does it when driving along road, never when stationary temp is normal no water leaks so I wonder if water pump is going or maybe a belt tensioner starter motor sticking etc. so my question is anyone else ever had these symtems and what was the cause.

[the silver surfer]

Are there any more 'indicators' that you can add to when you hear the noise? Like going up or downhill, cornering, braking, accelerating, slowing down etc etc?

[Red hilux]

and more details about the engine. Engine conversion?? or is it the stock 2lte engine

they didnt make a 3 litre diesel surf until 93, not 91

[skandaman]

Up or down hill or on flat but I noticed fan belt slack so I adjusted it now hardly any noise but when it does it's not so loud more a altenator bearing noise, I'm going to ride it out see what develops it's charging normal not overheating no water leaks, it's had a engine change at some point in its life it's registered at dvla as a 3ltr got 3 ltr ln130 on makers plate and 1991 I think it's a special.

[the silver surfer]

Loose alternator pulley perhaps?

[Jameswallace]

I used to get a terrible screach from the engine occasionally. Turned out to be the A/C belt slightly loose!

[surfenstein]

Check the crank pulley, the rubber inbetween breaks up and the crank pulley falls off.grab hold of it and give it a good wiggle,

[skandaman]

I used to get a terrible screach from the engine occasionally. Turned out to be the A/C belt slightly loose!

thank

[skandaman]

I used to get a terrible screach from the engine occasionally. Turned out to be the A/C belt slightly loose!

Thanks for that jameswallace, you have confirmed what I thought , I adjusted this belt and so far no noise it was very slack before I may get a new belt as the adjuster is at end of adjustment.