Thread: Help!! Td5 head gasket just replaced

The timing chain tensioner could not have been done up properly on reassembly. Or worse, they didn't line up the two marks at the top on the top cog and hence the timing could be out. But I am sure the timing being out could cause other issues as well.

JC where are you

Hopefully its just a turbo shield or down pipe or something like that.

if it was a major timing related issue the engine would be dead by now but that doesnt count out the timing chain being loose.

I can see it being something dead simple like a heat shield or a coupling bolt thats not nipped up properly.

If its an auto it could be a coincidental shearing of a torque converter to flex plate bolt failing but thats really giving murphy some credit.

Thanks for the quick responses,

So what is the procedure for ensuring correct re-installment of the tensioner after having the head re-done. What could they have done wrong.

The noise sounds to be timing chain related. Now at idle, it is a tad rough, idles smooth then has a slight miss.

It is an auto, I had a full rebuild of the box 12 months ago, due to the trans cooler pipe not re-fitted correctly after a tranny service, it was cross threaded by the apprentice and had a lsight drip drip, but the apprentice did not tell, auto rain dry and cooked the converter. The shop came good and footed the entire repair costs, so I know the auto is good and not the problem.

Even with the blown head gasket, there was no chain noise and no bump bump at idle, the new noise has only ocurred since the head repairs.

Regards

Aro

the last td5 I saw that had a smooth idle with an intermittant miss was missing the injector harness clip for one of the injectors. vibrate it just the right way and that injector wouldnt fire. IT logged fault codes though.

Grab a Rave CDROM and eyeball the rebuild info in there for doing the head works and timing gear.

ID do it out of mine but ATM My discs are at work.

Already got the Rave, cannot see anything that stands out, the shop where the head was done also have the Rave Cd, which I have asked them to look over.

It is a timing chain noise, spoke with a Land Rover dealership about a new chain and they don't keep them in stock, they told me the chain will last the life of the engine. Sounds like something a miss with the adjuster, but what could it be??

Is there a special way to re-install it?

Aro....

not that I recall which Is why Im more prepared to believe that its something stupid like an injector not getting the signal correctly from either oil in the harness or from a dodgey electrical connection along with something mind bogglingly simple like a loose bolt on a pipe fitting or a heat shield.

the only td5 that I've seen that was put together with the valve timing out did the old valves meet piston crown routine and did significant damage. (admittedly it was out by nearly 90 degrees)

Im tipping a quick run with the rocker cover off and the diags box plugged in will reveal something simple or not related to the head thats just chosen now to rear its head.

Originally Posted by arowanaman

Hi All,


. If you increased the revs, the rattle died away, however low rpm it was horrible. I refused to test drive it in case I damaged the engine. If the mechanic destroys it then he owns it.

The mechanic tried to tell me it was normal. I refused to drive the car out and parked it up and told them to have another look it, as they have not got something quite right. I also noticed fresh oil on the ground, so now I also have an oil leak.


Regards

Aro.

IMO If the timing chain was the problem the noise would likely be worse with revs. Installing the timing chain tensioner on these is probably one of the simplest to do. But your mech may not have tightened the camshaft sprocket properly after fitting the adjuster. (procedure is to leave the cam sprocket bolts loose until adjuster fitted and then tighten cam sprocket bolts afterwards. The sprocket bolt holes are elongated/ slotted for accurate timing) If this is the case the timing will be slightly out but able to run without catastrophic failure but will generate dsome noise specificly in the camshaft sprocket area. The sprocket may be shifting in the slotted holes.
Having said that, you should be able to access these bolts through the big plastic plug on the front of the motor. If they are loose it will be rocker cover off and recheck timing position and torque them up. Sounds like you havent gone far enough to damage the bolts. IF this is the problem.

Having said all that It is probably something simple as said above.

Cheers