Thread: Pulling my hair out!! (and there's scarce any left) Darn TD5

Internally collapsing intercooler hose?

Hi Keith,

Does white smoke point to over fueling? thought that would be black?

There are not that many sensors that will actually 'stop' the engine as you say and the ECU's are pretty robust so thats unlikely to be the issue.

Crank position is one of them. Did you change it.?

Some more info about the setup may be useful.

What fuel pump are you using? the TD5 one in an adapted tank?

Are the earths all good?

Unlikely to be a problem with the chain.

Does it still turn over freely? or start atall? Its not clear in your post (to me anyway!)

Rgds
Pete.

Originally Posted by Slunnie

Internally collapsing intercooler hose?

While I accept this can be an issue - I do not understand how these can collapse. These intercooler hoses are downstream from the turbo so are under pressure not suction - even with the engine sucking the pressure in these hoses should be substantially great than atmospheric.

Not understood.

Cheers

Garry

Originally Posted by Slunnie

Internally collapsing intercooler hose?

Hey Slunnie
I checked those that might be a problem, the rest are new silicon, at that if I remove the hose from the intake manifold the engine (based on what I've read) should run albeit very poorly, as there would be no turbo or MAF in the picture.

I've read about leaking injector washers or a crack in the head it seems that this would cause poor performance but not complete failure to start and run or does this cause complete failure?

The thottle pot is reading on all three tracks. I'm getting readings from the MAP, the injectors are giving me readings.

The injector harness is clean as a whistle.

I have had the 90 degree hose right at the turbo delaminate on a 300tdi.
STarted up early in morning, drove at 100 ish for 5-6 hours then as I pulled into a roadhouse engine started running like poo, coughing smoke etc etc.

I assumed that when i came off the power, the boost went from 15psi or what ever it peaks at... the hose looked fine from the outside. There must be some form of manifold -ve pressure on overun for this to occur one would think.

Steve

I've got a boost guage on mine and I've never seen negitive pressure (vacuum).

Originally Posted by Psimpson7

Hi Keith,

Does white smoke point to over fueling? thought that would be black?

There are not that many sensors that will actually 'stop' the engine as you say and the ECU's are pretty robust so thats unlikely to be the issue.

Crank position is one of them. Did you change it.?

Some more info about the setup may be useful.

What fuel pump are you using? the TD5 one in an adapted tank?

Are the earths all good?

Unlikely to be a problem with the chain.

Does it still turn over freely? or start atall? Its not clear in your post (to me anyway!)

Rgds
Pete.

The fuel pump is a modified Disco 1 version that puts a bit more pressure in the system. I have suspicions but it seems that with all the unburnt fuel about there would be plenty of pressure, on that note I could check it. It did run for some 4000 miles prior to failing.

Since I am getting RPM's on the Nanocom I would suspect that the CPS is working, unless? Is there something else that drives the RPM signal to the ECU?

Earths are good, metered them numerous times (I've owned loads of rovers )

Basically the car is a 97 D1 with a 2001 Defender TD5 I stuffed in it. Not sure what else to say about it, it's about as standard as I could make it with nothing too "different" from what would be stock.

It turns freely at about 250 RPM according to the Nanocom. Only occasionally it will try and catch. Previously I've tried a burst of ether with no luck sept a bit of bucking, tried other stuff too. Still it will not start.

I'm not one to be intimidated by electronics (heck I fit the dang engine) but I'm a bit mystified with this one. Of course my knowledgebase is limited over here as are parts (this is one of 10 TD5's in North America).

I'm wondering, under fueling? I've never experienced this in a diesel

Keith is it manual or auto?

Just out if interest, will it push/pull start?

There is a known issue where the starter motor can interfere with the crank position sensor and it confuses the signals.

The white smoke followed by the stop, is strange.

What happened when it stopped? Was it driving fine, revving , ticking over?

Found this on another forum, so looks like it could be too much fuel:

If white smoke occurs on cold start and disappears as it warms, it usually indicates low compression, as it is unburnt diesel. As temperature increases the burn efficiency increases and the white disappears. Sticking piston rings and also cylinder glaze can also cause this. If it does a lot of idling, light duty cycles, short run times or runs cooler than it should, it is a candidate for glaze

If it persists for longer than the warm up stage, other causes are more likely. Faulty injector could be a problem. Injector timing will cause white smoke that persists.

Rgds
Pete