Vehicle & Technical > Defender

Engine Ticking

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Timbob:
Yet more problems since timingbelt pop and subsequent repair. Do any of you gents have any idea why our 300tdi is ticking?tapping? Valve clearances, piston ring? I do hope it is not the latter. Any advice gratefully received please.
Thanks

Saffy:
couple of ideas..

Excessive valve clearances would make that sort of noise. Maybe need to recheck the gaps since running in with the new rockers and pushrods. There might have been slight disformation of cam follower cup seat the push rod sits in and now has bedded in increasing the valve gap. Should have been spotted on the rebuild really.
It is also worth checking the valve stem caps are all present and not deformed, it common for them to "disappear".

Could be really nasty and the rocker shaft assy mounting studs have pulled the thread out of the alloy head a little and its flapping around waiting to let go completely :shock:

Timbob:
Thanks for the quick reply, I am pleased that you didnt mention piston rings! Although last suggestion is a tad concerning. The ticking noise was there as soon as the vehicle was returned "rebuilt". I shall have to investigate.

Xtremeteam:
it will be the vacum pump

Timbob:

--- Quote from: "Xtremeteam" ---it will be the vacum pump
--- End quote ---

Could you elaborate please? Pump broken, in need of adjustment, replacement?
I scared i still have engine problems!
Also, is that the vacuum pump for the brake servo? The jobber bolted onto the side of the block. The noise is much more apparent from in the cab than when looking under bonnet. How do I isolate the noise as being from the pump?
Thanks All

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