tap tap tappets

Hey there guys and gals,

My TD5 engine has an annoying tapping sound that has been diagnosed as the tappets that need adjusting..

Now Ive just had the rocker cover off and have bottomed out the adjusters then given them 360 dergree turn anti clockwise then lock nut tightened without turning the screw..

put it back together but still a tapping sound.... i have access to a feeler gauge, does anyone have the clearance i need handy?? also do i have to adjust anything else below the cam??

Thanks guys

Disco 2 gs 1999 ^TD5

the tappets on a td5 are hydrolic, no adjustment is possible it sounds like you adjusted the injectors

yeah i think i did, would they cause a tapping sound top end? its had this tapping sound since the head gasket was replaced :S

Could it be anything to do with the injector harness? I pulled out my ecu and the red plug has oil on the outside :S

nothing to do with the harness, but if oil in red plug then the harness needs replacing, injector noise sounds like a hollow metalic type of sound, but its hard to describe a sound

aye I feared as much, thanks for the confirmation on the harness replacement. This is like a clicking/tapping sound in line with however many revs i have on... seems like Alot of vibration through the whole car also... more than normal..

I know this isent a landrover but the noise of tapping is exactly the same....[nomedia="http://www.youtube.com/watch?v=SAF7NP8pakY"]YouTube - Astra sri 2.0 modified but now tappey after head gasket change[/nomedia] Do you think it might be the lifters? should i try seafoam?

johnlad said:

nothing to do with the harness, but if oil in red plug then the harness needs replacing, injector noise sounds like a hollow metalic type of sound, but its hard to describe a sound

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John - is injector noise there all the time, or only under load?

madhat, not sure if its an injector noise or not, that was an awnser to my question that john posted lol

It does however sound exactly like the tapping on that astra

sorry - was hijacking yo thread - got a similar noise on my X-T - sounds like a tappet or small end nock - had it for the last 30K miles tho, so it aint serious, just its bugging me .

Jezath said:

I know this isent a landrover but the noise of tapping is exactly the same....YouTube - Astra sri 2.0 modified but now tappey after head gasket change Do you think it might be the lifters? should i try seafoam?

Click to expand...

that noise dont sound like incorrect adjustment of injectors thats like somethings broke internally, do you have any smoke issues or is it down in power

The Mad Hat Man said:

John - is injector noise there all the time, or only under load?

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normally under load

johnlad said:

normally under load

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hmmm - maybe thats wot I got then - ta.

no smoke issues at all.... it feels to me like its a little down on power as to how it used to be before the head gasket replacement...

Previous to this replacement of the head gasket the engine sounded wonderful!!

Might be your crank shaft pulley damper!

They are prone to going and cost a bloody fourtune !

Might be worth checking the manifold gasket, i had a car once with a slight leak and that was causing a tapping noise.

thanks guys... first thing first is stick some valve lifter in the oil and see what happens,

Deffo not the pulley damper, ive justreplaced the pulley and damper and front oil seal.. One garage says its the lifters, another says its the followers, another says injector seals.. what a headache.. ill look into manifold gasket etc thanks