Lost adjustment on tappet suspected cam follower worn?

Hi all

I keep adjusting my tappets and one just starts tapping after a few miles I've had it to bits a few times now do you think the cam followers knackered if so I presume the head has to come off to change the follower etc etc also new timing belt kit? Is it really involved to do.

It's the second one along in the picture with no thread showing on the adjuster

All help will be much appreciated

has it got a groove worn under the tappet?

Sorry I'm not very clued up which part do you mean? The rocker arm is worn. And the push rod has a few marks on it cam follower end

Many thanks
Rory

the bit of the rocker that pushes down on the valve

Yes that's work on the end like a sort of half moon shape surely I wouldn't lose all adjustment because of that?

Rory 110 said:

Yes that's work on the end like a sort of half moon shape surely I wouldn't lose all adjustment because of that?

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yes you will. take them off, keep in the same order and carefully remove the lips with an oiled stone. Maintain the shape.

Won't that make it worse? As the adjusting tappet screw has no more adjustment
It will tighten the the rocker but I can't get the lock nut on it. That's what makes me think the push rod has worn into the follower where it's been tapping for a long time.
The old owner which was my neighbour who had it In the garage for a head gasket before I got it as it was sounding like a pop pop pop out the air filter resonator but now I reckon he just wound up the tappet and it does cure the noise for a little while then returns back to missy noise and loses alot of power. I just want to be half sure before I get it in the garage.
Are they chain or cam belt?

Thanks for your help

replace the rockers then.

Rory 110 said:

Won't that make it worse? As the adjusting tappet screw has no more adjustment
It will tighten the the rocker but I can't get the lock nut on it. That's what makes me think the push rod has worn into the follower where it's been tapping for a long time.
The old owner which was my neighbour who had it In the garage for a head gasket before I got it as it was sounding like a pop pop pop out the air filter resonator but now I reckon he just wound up the tappet and it does cure the noise for a little while then returns back to missy noise and loses alot of power. I just want to be half sure before I get it in the garage.
Are they chain or cam belt?

Thanks for your help

Click to expand...

its worth checking the roller and sliding followers if push rods arent bent

I wouldnt have an idea what you mean.

Have checked all the rods none are bent

Rory 110 said:

I wouldnt have an idea what you mean.

Have checked all the rods none are bent

Click to expand...

I think he is saying to check the whole valve drive train for wear or damage. Followers, push rods, rockers, etc.

Compare the length of the faulty pushrod with one of the others in case it has been fitted with wrong part.

The rockers on the end that sits on the valve are all different thicknesses.
Push rods are all the same length have had them all out and numbered then on a piece of card. I can't see the cam followers unless I take the head off.

I am looking into sending it to Glencoyne engineering for a full 200tdi conversion in the near future