Jump to content

Tdi engine failures


The Hatt

Recommended Posts

If you've had a 200 or 300Tdi engine failure could you please provide some info:

-Nature of the failure, as in what failed

-Cause of the failure if known

-Remedy to the failure if one was available

Please could we try and keep this thread on topic thanks. :)

Link to comment
Share on other sites

300Tdi

Warped & cracked head - stone through the rad while foot flat to the floor on an autobahn. Lost all coolant before the gauge moved. Bores & pistons ok.

#2 piston melted, #1 damaged, head scrap - after the engine was freshened with new pistons (60 miles of gentle road use!). Suspected fuelling problem. FIP, injectors & turbo were all low mileage and all working ok before engine work, so were reused after the rebuild. FIP & cam timing checked ok. Tests on fuel system proved it metered ok. No formal conclusion reached as to whether fuel or defective pistons. Engine scrap.

The first failure was just one of those things, but might have been less damaging if a coolant level sensor and warning light had been fitted. The melted piston issue resulted in months of "discussions" with the parts suppliers, manufacturers and lots of controlled testing / calibration work while the vehicle was laid up. Manufacturers wouldn't accept that their pistons could have been faulty. It brought into focus how a slight imbalance could quickly wreck an engine.

Link to comment
Share on other sites

Not mine but at work, several 300s.

Radiator header tank split, lost coolant, driver on cloud 9, bang, new engine as totally FUBAR

Oil cooler pipe union unscrewed from oil cooler, lost oil, driver blissfully unaware, bang new engine also FUBAR

"Ejector pump" T-piece split on coolant hoses (seen a few of these prob 3/4) coolant loss > overheating with varying degrees of damage but usually head gasket and sometimes new head (warped) required

Can't say I have seen any terminal explosions that haven't been due to oil or coolant loss because of some ancilliary failure, at least none that I can think of. One needed some new conrods having been parked upside down for a while (oil in cylinders) and another one was the same after being parked in a river for a while (about 5ft deep) and then tow-started with a 4WD tractor...

Link to comment
Share on other sites

My old 300 went on to throw 2 rods after it was rebuilt (suffered partial Zeus timing gear failier). That engine had done approx 100k with FSH, only mildly tweeked BUT it did do 25k with me and quite a few challenge events.

I know of a couple of broken cranks and I've seen a several broken rods on non hydroed engines (I only live a couple of miles away from a large independent Land Rover specialist and I'm in there quite a lot). By no means are they bad engines but they're not bullet proof.

Link to comment
Share on other sites

snapped a crank just after number 1 lobe

A crank doesn't have lobes - a cam does.

300TDi engine - overheated so much that the temp sender was melted and the head was cracked and warped 40-thou. Possible partial siezure due to almost no oil.

Cure -

New head, rebore, new gen pistons - yadda yadda -

gallery_2_416_689749.jpg

gallery_2_416_610383.jpg

gallery_2_416_68285.jpg

Les.

Link to comment
Share on other sites

Disco 200 TDI - Head Gasket failure at back of block, blowing to atmosphere on a 180k mile lump - put down to age. Still ran fine, just chuffed a bit...

Disco 200 TDI - Head Gasket failure - consumed it's coolant, so presumed cylinder to coolant blow. Stil runs, just needs coolant topping up occasionally :o

Disco 300 TDI - System pressurised, expelled coolant via the safety release valve on the header tank. Presumed Head Gasket Failure, but on replacement system was still gassing. New Head and New Gasket (obviously) saw it right again - presumed cracked head between exhaust and coolant.

Other common issues on 200's are crank damper disintegrating, stops drive to water pump and aux belt, so can cause overheating, and utimately HGF. Caught mine just in time. The other common one is timing belt failure but I havn't had that happen yet...

Mark

Link to comment
Share on other sites

200TDi Disco: Runaway Engine (unable to stop engine even with the key out the ignition, engine was stopped using high gear, clutch and foot hard on the breaks) Note: LOTS of smoke!!

Runaway 1: Turbo was initially blamed for the engine running away on oil passing from the turbo seals and hence being burnt by the engine. Turbo replaced, new pistons rings, big ends and mains replaced for good measure (Cost: Quite a lot of money).

Runaway 2: After much phoning around many experts it was advised to replace the cyclone seperator on the side of the cam (COST: About £30).

The problem went away after this was changed, note that the runaways only occured after long drives from Kent to Fife and was absolutely fine on short runs.

HTH

Cheers

G

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

We use cookies to ensure you get the best experience. By using our website you agree to our Cookie Policy