Thread: Ticking Tappet noise solved...

Thanks JC, that's probably the noise that I had in my original motor at around those K's that I could never find. annoyed the crap out of me for awhile but it never got worse so I learned to live with it

Originally Posted by Bearman

Thanks JC, that's probably the noise that I had in my original motor at around those K's that I could never find. annoyed the crap out of me for awhile but it never got worse so I learned to live with it

Thats exactly the same noise I reckon Brian, just annoying really, not noisy enough to worry about impending doom

Glad it has gone, sounds as quiet as Robs 90,000km engine now

JC

I reckon you are spot on JC as I though it was tappet related but after checking them a couple of times and finding nothing I gave up and learned to live with it, sort of like an individual character thing.

I've got a ticking noise, back after two clearance adjustments. My rocker assembly looks ok to me, the rocker arm contact points don't look worn and I put new end caps on the stems... but now I'm not sure if its all ok as I never considered 'end float'.

If I can move each rocker up and down the bar, how much movement is too much? What exactly should be checked for wear? Ok so mine is TDI not isuzu but a suppose most rockers assemblies are similar. Could my TDI rocker need spacers or new springs if I still get ticking after proper clearance set?

On the Isuzu, The end arms aren't spring loaded against anything, unlike all the others. In my cae, about a whole mm of endfloat was evident, I could even replicate the sound by hand clicking them sharply along the rocker shaft back and forth.

Choose your shim carefully, I was fortunate to find the tdi valve spring shim removed 95% of the play, but a small amount of endfloat is very important. I would guess about 5 to 8 thou. (.15 to .2mm) is pretty much right

The Tdi is quite different , the likelihood is that you have to check the clearances again. Pay attention especially to whether or not the rocker shaft retaining studs into the head aren't pulling their threads out of the head....

JC

Thanks for the tip JC. I've carefully checked my valve clearances quite a few times, and they always seem right. Been wondering about that mild tapping noise too for many years. Hopefully I can do as you've suggested and then enjoy the other sweet sounds of the Isuzu instead.

Originally Posted by AdsLandies

Thanks for the tip JC. I've carefully checked my valve clearances quite a few times, and they always seem right. Been wondering about that mild tapping noise too for many years. Hopefully I can do as you've suggested and then enjoy the other sweet sounds of the Isuzu instead.

thats the funny bit, the isuzu clearances are big enough to drive a , well, isuzu truck through so there is a bit of a margin there to play with. my thoughts were that if you don't have huge valve clearances then the problem is usually something else....

jc

Tick tick very annoying ...found the same problem with mine on the back rocker .7mm gap... I found a washer with the correct i.d . It was slightly to thick so carefully sand it down figure 8's on sand paper. placed on a steel plate ...can't believe how much noise it was making now it's gone

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