heartbroken and sorry to you all .....the story

[clivvy]

Noises are fine to fart about with but what is associated with it when they drive the thing. What does the oil pressure do ? what does the power sound like? is it misfiring or just not running? does it lose power under acceleration if at all?

Theres so much that a 1/2hr test drive would tell them and lead a knowledgeable mechanic into a decent first diagnosis without stripping down which I am sure they will do eg is it big ends that make loads of noise form cold then thump under load ? (trawling the depths of my memory) but the point remains the same.

Far too early to give up.

May become economically impractical but thats way down the line.

I totally agree dave. the mech is looking properly Monday. all i can say is when he staretd it from cold, it started fine. no smoke. went to idle, so he revved it up for me at the throttle and it revved up nicely, then, when he let the throttle go and it JUST went to idle, it knocked, just once. few minutes later at idle, did it again.

 

[Mundy]

just turn radio up...

seriously though, hope it gets sorted is a shame. The 2.7's don't just die like said before.

 

[clivvy]

well, i just done some research. cant be big end bearings gone. this knocking noise is a singular knock, at a random interval, almost as if something is winding up then releasing, or something sticking. I have read that if the big end goes, then the noise is loud hammer type noice, and constant. or other related symptoms are constant tapping (not tappets)...so its not that.

what does everyone think about the belts. i noticed that one of petes belts, the lower one (power steering??) is very brown and worn. i noticed it wobbling too, could this be knocking? I mention it because my old Fourtrak used to do it, steering idler was held on by one bolt of three, so it woudl just knock. my point being is Petes car only seems to do it when dropping to idle, so could it be the power steering pump taking up the strain to supply power to the steering?

 

[Mundy]

gotta be something wiv gearbox

 

[Deleted account DD]

well, i just done some research. cant be big end bearings gone. this knocking noise is a singular knock, at a random interval, almost as if something is winding up then releasing, or something sticking. I have read that if the big end goes, then the noise is loud hammer type noice, and constant. or other related symptoms are constant tapping (not tappets)...so its not that.

I agree with what your saying. Cog wear, big end wear etc tend to make noises going under and coming off load. All due to the free play and taking up the backlash.

If this noise is constant and depending where the mark I diagnostic eardrum says its coming from, its a either broken bit. something like a rocker arm, an idler type thing or layshaft or as in the pulley theory something hitting something its not supposed to.

I dont claim to be an expert and its a long time since I had to diagnose such things..................

About time for those who always seem to know to step into the breach :augie :thumb2

 

[briggie]

well, i just done some research. cant be big end bearings gone. this knocking noise is a singular knock, at a random interval, almost as if something is winding up then releasing, or something sticking. I have read that if the big end goes, then the noise is loud hammer type noice, and constant. or other related symptoms are constant tapping (not tappets)...so its not that.

what does everyone think about the belts. i noticed that one of petes belts, the lower one (power steering??) is very brown and worn. i noticed it wobbling too, could this be knocking? I mention it because my old Fourtrak used to do it, steering idler was held on by one bolt of three, so it woudl just knock. my point being is Petes car only seems to do it when dropping to idle, so could it be the power steering pump taking up the strain to supply power to the steering?

i like that idea clive , its a cheap and easy fix if its true

 

[extreme-4x4]

well, i just done some research. cant be big end bearings gone. this knocking noise is a singular knock, at a random interval, almost as if something is winding up then releasing, or something sticking. I have read that if the big end goes, then the noise is loud hammer type noice, and constant. or other related symptoms are constant tapping (not tappets)...so its not that.

what does everyone think about the belts. i noticed that one of petes belts, the lower one (power steering??) is very brown and worn. i noticed it wobbling too, could this be knocking? I mention it because my old Fourtrak used to do it, steering idler was held on by one bolt of three, so it woudl just knock. my point being is Petes car only seems to do it when dropping to idle, so could it be the power steering pump taking up the strain to supply power to the steering?

pain in the arse i know . but how would you describe the knock clonk or whatever it is.

example a tea spoon against a cup sounds different to a spoon against a saucepan ... what else in the world makes that noise

 

[Deleted account DD]

i like that idea clive , its a cheap and easy fix if its true

You dont know yet. Hold back

 

[briggie]

You dont know yet. Hold back

page 16 .... wot ya think guys ?

http://bebrs.pie-dabas.net/Webs/Terrano/R20/st.pdf

 

[clivvy]

pain in the arse i know . but how would you describe the knock clonk or whatever it is.

example a tea spoon against a cup sounds different to a spoon against a saucepan ... what else in the world makes that noise

ok, try to describe. lightly tapping engine block with a hammer. thats thebest i can think of, its really odd sound. I cant describe it as tappety, because its a single tap, and to me, it really sounds like something sticking because the sound is almost muffled. does that make sense? i was going to video it, but i knew the sound would be totally lost.

 

[briggie]

ok, try to describe. lightly tapping engine block with a hammer. thats thebest i can think of, its really odd sound. I cant describe it as tappety, because its a single tap, and to me, it really sounds like something sticking because the sound is almost muffled. does that make sense? i was going to video it, but i knew the sound would be totally lost.

leave it running for a bit and it gets worse clive

 

[clivvy]

leave it running for a bit and it gets worse clive

right, the guy did say that, when the oil gets warm BUT STILL, all the bearings, pistons etc are moving regardless. surely if they were gone, they'd be tapping from cold, constantly.

 

[Toolbox]

Sorry, very late coming in on this, but a metallic uneven harsh rattle can sometimes be attributed to a combustion chamber becoming lose in the head, although they normally rattle more when cold, from what you have said I would still be inclined to remove the head and inspect, its very difficult to diagnose a rattle or noise if you cant actually hear it.

 

[clivvy]

Sorry, very late coming in on this, but a metallic uneven harsh rattle can sometimes be attributed to a combustion chamber becoming lose in the head, although they normally rattle more when cold, from what you have said I would still be inclined to remove the head and inspect, its very difficult to diagnose a rattle or noise if you cant actually hear it.

ok, this is the problem also, to remove the head etc and inspect, is gonna cost! One point to note, its not a rattle, its a single, random knock at first, that apparently inreases to a rattle when warm, like the rattle of a loose exhaust. Could this still be internal engine?

Pete, someone needs to ensure that the garage DOES NOT do any work thats going to cost without you or us knowing about it. Can you or perhap Paul speak to them Monday morning? I might not get chance myself as I may be working down in Nottigham...

 

[briggie]

ok, this is the problem also, to remove the head etc and inspect, is gonna cost! One point to note, its not a rattle, its a single, random knock at first, that apparently inreases to a rattle when warm, like the rattle of a loose exhaust. Could this still be internal engine?

Pete, someone needs to ensure that the garage DOES NOT do any work thats going to cost without you or us knowing about it. Can you or perhap Paul speak to them Monday morning? I might not get chance myself as I may be working down in Nottigham...

might be better if paul does

 

[paulp]

probs

Was the vehicle serviced when the box was done?

If so quickly insure it with the AA parts and labour insurance about £9 per month.

When the (i think) 28 days grace period expires call the AA out they will give a gestimate of the problem take it back to the garage and they pay the first 500 for a repair and you pay the £25 excess

paulp

 

[Toolbox]

ok, this is the problem also, to remove the head etc and inspect, is gonna cost! One point to note, its not a rattle, its a single, random knock at first, that apparently inreases to a rattle when warm, like the rattle of a loose exhaust. Could this still be internal engine?

Pete, someone needs to ensure that the garage DOES NOT do any work thats going to cost without you or us knowing about it. Can you or perhap Paul speak to them Monday morning? I might not get chance myself as I may be working down in Nottigham...

From what you have said it still could be something like a loose combustion chamber, which is not uncommon to the engine. Worn big or small ends, would not give you a random rattle it would be more or less in time with the engine as would anything in the valve department, big small end wear is also often worse when the engine is pulling. If you get a chance to get another look, get a long screw driver out and stick the handle up to you ear and go around the engine placing the tip against the head block etc with it running to try and identify the area, it should be fairly clear and easy to detect getting louder the closer you become to the problem. To rule out any of the auxiliary equipment steering pump, alternator and water pump run the engine with the drive belts off for a short time.

 

[Toolbox]

If they serviced it, did they fit the correct oil filter? The td engine has a non return valve inside the filter while the tdi does not.

 

[clivvy]

If they serviced it, did they fit the correct oil filter? The td engine has a non return valve inside the filter while the tdi does not.

i dont believe they serviced it.

the mechanic did say he had done the screw driver test, but again hadnt really had proper time to investigate. I doubt very much i'll get chance to go back before next weekend!

 

[danielj]

Briggie, only just logged on to the site after a few days absence. Very sorry to hear about the latest difficulty with the truck. Hang in there for another few days till there is some clarity on what exactly the problem is. Your not beaten yet and neither are the members of this site by the sound of things.