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  #1  
Old 3rd-May-2011, 23:41
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Join Date: Jan 2006
Posts: 25
Default Disco 2 V8i - 3 Issues: Judder / tappets? / exhaust

Year 2000 Disco 2 V8i Auto. 3 main issues, which I'd be grateful for advice on (before I decide whether to go local dealer or local disco repairman). Vehicle suffered major front end problem 18 months ago, which led to (a) new gearbox; (b) recon block and heads. All well until recently:

1. Drive (clutch?) judder when engage gear. Most acute if hold the car on the brakes against even tickover. Seems to ease off a bit once gets warmer, but always present nevertheless, and too bad to ignore. Gearbox? Torque Converter? Something else?

2. Ticking noise from engine. At first I thought an exhaust gasket (LH manifold?) issue (originally most noticeable when revvving but little or nothing on lift off); but now noticeable pretty much all the time. Does lessen / disappear a bit on throttle lift off, but still present. Tappets? Camshaft?

3. And most peculiarly, also sounds as if exhaust is blowing (ie holed). But have had up on ramp and can see / feel no sign of leak. seems to be coming from area of near-side catayltic convertor - took off heatshield but still nothing to see. Suggestion from local man that could be that cat has collapsed internally in some way ...... Any ideas? I'm stumped.

Appreciate views on any / all of above.

regards

Redman
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  #2  
Old 4th-May-2011, 11:20
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Join Date: May 2009
Location: surrey
Posts: 222
Default Re: Disco 2 V8i - 3 Issues: Judder / tappets? / exhaust

My exhaust (D2 V8) is also louder than usual with no obvious leaks/holes and I have a ticking noise under load as well which someone has suggested may be the cat as well so the two could be linked.

Cant help with the judder though it sounds as though the clutch isn't disengaging properly
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Old 5th-May-2011, 21:49
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Default Re: Disco 2 V8i - 3 Issues: Judder / tappets? / exhaust

Hadn't thought about it being linked to exhaust / cat. May well be. Anyone else any ideas? Now looking at replacing down pipes incl cats. Would straight through be legal / OK for MOT?

Any other comments welcomed.
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Old 6th-May-2011, 07:39
oldskool's Avatar
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Location: Essex near maldon
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Default Re: Disco 2 V8i - 3 Issues: Judder / tappets? / exhaust

Will fail MOT without cats unless your running gas. Ticking noise sounds like exhaust manifold gasket to me.
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Old 6th-May-2011, 10:00
alex8882's Avatar
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Location: lytham,st.annes
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Default Re: Disco 2 V8i - 3 Issues: Judder / tappets? / exhaust

i take it that you have an auto. if so what state in the auto transmission fluid in may ne changing. Also it could be that the filters in the auto box sump needs replacing
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Old 9th-May-2011, 21:27
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Default Re: Disco 2 V8i - 3 Issues: Judder / tappets? / exhaust

Thanks for inputs. Have decided to start by fixing known issue(s) with exhaust and see if can eliminate at lesat some of the rest of it. There is certainly a leak on the LH manifold/down (Y) pipe gasket (checked it yesterday) and the LH cat is also completely shot.

So to replace the Y pipe and cats: which brings me to the vexed Q of how to source reasonably. I'm in Belgium which is not exactly awash with Disco parts!

Any advice on (a) reputable UK breaker; (b) good UK or other source for after-market item? Am certainly not putting a new replacement item on an 11 year old D2! Web trawl seems to be indicating up to 8-900 even for after market .....
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Old 10th-May-2011, 13:02
GreenHornet's Avatar
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Default Re: Disco 2 V8i - 3 Issues: Judder / tappets? / exhaust

Redman,

If you go to breakers you are not going to get a guarrantee on quality or condition. I used to work for one and it is false economy particularly as you are located outside of UK. Best search for good quality aftermarket items or pattern parts. Many UK companies will ship abroad into mainland europe with no issues failing that I have heard trucking companies putting small courier loads on the back of their trucks.

As for the gearbox. If its a manual then you may have an issue with the Dual Mass flywheel or oil getting on the Clutch friction surface. This dirt/oil can come from Rear oild seal or even off roading with no wading plug in the bell housing.

Replacing a clutch on the TD5 means also replacing the flywheel too.

If its an automatic then you are probably suffering from dirty oil and sedment in the gearbox sump, I think someone already mentioned that.

Hope it helps.
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Old 27th-May-2011, 20:59
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Default Re: Disco 2 V8i - 3 Issues: Judder / tappets? / exhaust

So: now have nice new down pipe with cats (Allways), and sounds great.

Also checked TF Box fluid level - OK; and gearbox (auto - OK). Have checked props / U/Js - seem good.

But still getting loud "ticking" noise from what seems to be top of engine at idle, which varies with engine speed but does seem to ease off if lift revs up to 2000+. Also get major vibration at idle, and again most evident at about 50mph, but at higher speeds (not that I'm doing anything speedy until get this sorted) it seems to ease off again; similarly if accelerate hard the vib seems to disappear; and it is pretty much gone on over-run.

Have tried various combination of Diff Lock in H/L/N etc, also auto box in P / N, but vibration very much evident whatever the combination.

Any ideas? Camshaft? Something in the Head? Injectors?

G
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Old 27th-May-2011, 21:05
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Default Re: Disco 2 V8i - 3 Issues: Judder / tappets? / exhaust

ticking is probably hyd tappet ,check torque convertor bolts not loose and drive plates not cracking
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  #10  
Old 27th-May-2011, 22:55
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Default Re: Disco 2 V8i - 3 Issues: Judder / tappets? / exhaust

Got what sounds like ticking tappets on ours, what sort of a job is it to adjust them?, or are they even adjustable? Got a haynes manual for it.. but this numpty got the one for a TD5 not the V8 didn't realise till I couldn't find anything about the engine, then read the front cover 'does not cover petrol engine models'

Don't mean to hi-jack your thread mate, but as I have similar symptoms ...
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