chris freestone · Oct 30, 2013

Hey all, got a new proble. With my engine and hopein i can get some suggestions for what it might be?!? Done a service on my hole car lastweek and it was running beautifully after lovely and quite (well for a landy

) untill i went for a play this weekend, lots lovely deep wet mud and got stuck lots of times.... And since my engine is runnin alot noiser and had developed a tap tap tap in rythim with the engine. It has no apparent affect on the running of the engine starts fine and not under power no smoke... My thoughts are maybe bent pushrod and tappits?? What do u think?

Thanks chris

dizzytim · Oct 30, 2013

Could be as you say or vacuum pump worth a check

jamesmartin · Oct 30, 2013

200tdi has rotary vane pump ,doesnt tap like 300tdi, id start with tappets

chris freestone · Oct 30, 2013

Probly worth saying its a disco 200tdi put in a d90

dizzytim · Oct 30, 2013

jamesmartin said:
200tdi has rotary vane pump ,doesnt tap like 300tdi, id start with tappets

Thanks for that info will remember that for future

warrior · Oct 30, 2013

Could it be the same as what suew had?

alexr · Oct 31, 2013

I had a tapping on my 300tdi last year, check exhaust manifold bolts are all tight and for any soot marks around where it bolts to the engine could indicate knackered gasket. Thats what mine was, sounds like what you're describing.

chris freestone · Nov 9, 2013

Hey people thanks for your responses and sorry for my very late reply . Been vwry busy! Got round to havin a look at it today, defenetly nothin wrong with the exhaust gasket, have had all my pushrods out and nothin wrong there or apearingly with the tappits.... So im starting to think the timmimg is out? It has begun to get harder to start in the mornimgs and the tapping is very apparent when the engine is cold plus smokimg alot until it gets warm..... It all seems to get better as the engine warms up. But defo abit under power. Am i on the right trak and is there an easy way to check before i start stripping the rad and timing chest?

Thanks chris

Turboman · Nov 9, 2013

chris freestone said:
Hey people thanks for your responses and sorry for my very late reply . Been vwry busy! Got round to havin a look at it today, defenetly nothin wrong with the exhaust gasket, have had all my pushrods out and nothin wrong there or apearingly with the tappits.... So im starting to think the timmimg is out? It has begun to get harder to start in the mornimgs and the tapping is very apparent when the engine is cold plus smokimg alot until it gets warm..... It all seems to get better as the engine warms up. But defo abit under power. Am i on the right trak and is there an easy way to check before i start stripping the rad and timing chest?

Thanks chris

Piston slap is sometimes more noticeable on a cold engine.

chris freestone · Nov 9, 2013

Ok thansk so what is that and how would i diagnose?

jamesmartin · Nov 9, 2013

chris freestone said:
Hey people thanks for your responses and sorry for my very late reply . Been vwry busy! Got round to havin a look at it today, defenetly nothin wrong with the exhaust gasket, have had all my pushrods out and nothin wrong there or apearingly with the tappits.... So im starting to think the timmimg is out? It has begun to get harder to start in the mornimgs and the tapping is very apparent when the engine is cold plus smokimg alot until it gets warm..... It all seems to get better as the engine warms up. But defo abit under power. Am i on the right trak and is there an easy way to check before i start stripping the rad and timing chest?

Thanks chris

did you check all the valves opened fully and smoothly first

chris freestone · Nov 9, 2013

I didt no, how would one do this, they are far to stiff to do by hand?

jamesmartin · Nov 9, 2013

not easily if its all stripped down ,it can show up bent valve or worn follower or timing issue,worth slackening each injector nut in turn see if that makes a difference

chris freestone · Nov 9, 2013

Ok ill try the injector thing tomorrow, it is all back together at the moment

chris freestone · Nov 9, 2013

Do you mean just watch them with the engine runnings and roker cover off?

jamesmartin · Nov 9, 2013

chris freestone said:
Ok ill try the injector thing tomorrow, it is all back together at the moment

turn engine over with rocker cover off and watch valves then

Jason2 · Nov 10, 2013

Could be an injector !

Try slackening off each injector union with the engine going to see if the tapping changes/goes away !

I had the same tapping on a 200 tdi that was so bad and smoky it would'nt drive, tried everything (timing,injectors,tappets,valves,lift pump,vacuem pump etc..) with no luck !

Plan's changed and it got sold on, buyer promised to let me know what it was if he fixed it but he never did

I reckon it was a little end bearing !

Good luck !

aaronmorris · Nov 10, 2013

Jason2 said:
Could be an injector !

Try slackening off each injector union with the engine going to see if the tapping changes/goes away !

I had the same tapping on a 200 tdi that was so bad and smoky it would'nt drive, tried everything (timing,injectors,tappets,valves,lift pump,vacuem pump etc..) with no luck !

Plan's changed and it got sold on, buyer promised to let me know what it was if he fixed it but he never did I reckon it was a little end bearing !

Good luck !

Maybe he never fixed it and just put another engine in it. Saves a lot of guessing games.

chris freestone · Nov 10, 2013

Hey so had another look today, tried loosenin injectors to no avail however the front injector has oil comeing out from around it when loose! What does that mean sure it shldnt be happenin? Also i checked my pump timing and it was slightly out, adjustedit it via the 3 bolts under the plate on the timing chest..... Does this suhgest maybe the cam shaft timing could be out aswell?

chris freestone · Nov 13, 2013

Right so ive got the head off now, nothin wrong with valves all looks inorder no signs of anything bad. I know the timing is right atleast for the fuel pump.... So am i now lookin at a broke piston ring?

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