2005 Freelander TD4 help

[martinwest]

High everyone
My son brought this car off eBay last week hoping it was a easy fix ( yer right ) any help would be greatly appreciated

Symptoms
Lots of white diesel smoke
Will tick over when warm but won’t rev up
Have to use easy start from cold as tries to fire but won’t start
Hot will start after a few goes

Done so far
Injectors leak down test 1 replaced
All 4 glow plugs faulty replaced
Cam sensor tested ok
Map sensor cleaned
Head gasket coolant gas test ok but engine cold
Fuel pressure high 4000psi low pressure supply 313.20
Manifold pressure 14.4psi
Fuel pressure regulator current 0.65
Air flow 388.6 mg/str
All at idle
Previous owner replaced the low pressure pump
and there are no fault codes

[Mike Noc]

Next thing I'd do would be a compression test on the cylinders - low compression could be the cause of your symptoms.

[dave lincs]

Just a thought are you sure it is diesel in the tank had one doing this bit ago he had put petrol in it

[Ducati750cc]

If it is white lingers and is not steam, steam dissipates quickly and you can smell derv in the smoke it's a sign of the derv not been correctly combusted in the cylinders, yje unburnt fuel passing through the exhaust



Causes can be low compression, faulty injection timing, faulty injectors, low fuel pressure , contaminated derv, timing gear problems and as mentioned by Dave, petrol in the derv, easy to find out draw some derv out of the tank, have a sniff at it the petrol smell is usually apparent, somewhere safe, pour a small quantity on a stone or concrete surface and try to light it with a match, derv shouldn't ignite it need a wick much like paraffin, but with petrol in the petrol vapours ignite, soon flare out and leave an oily deposit on the surface.


Plus check for water in the derv.

[martinwest]

Thanks for the reply's I couldn't smell petrol or see water when I did the leak down test but I will try lighting it to see what happens and then I will check the compressions as I have just realised my compression tester has a adaptor the same size as the glow plugs Also the smoke is defiantly derv
Is there any way to check the timing as I thought the ECU was in charge of that ?

[Ducati750cc]

Originally Posted by martinwest

Thanks for the reply's I couldn't smell petrol or see water when I did the leak down test but I will try lighting it to see what happens and then I will check the compressions as I have just realised my compression tester has a adaptor the same size as the glow plugs Also the smoke is defiantly derv
Is there any way to check the timing as I thought the ECU was in charge of that ?

A word of caution, make sure your comp gauge, hose and adaptors are up to coping with diesel compressions which can be around an average of 300+ psi. up to 600+ psi.


It can make quite a 'pop' when a hose or gauge lets go !

[martinwest]

Mine goes up to 300psi and I have read on the land rover forum it should be about 270psi can anyone confirm that before I try

Thanks

[Jamiewelch]

Originally Posted by martinwest

High everyone
My son brought this car off eBay last week hoping it was a easy fix ( yer right ) any help would be greatly appreciated

Symptoms
Lots of white diesel smoke
Will tick over when warm but won’t rev up
Have to use easy start from cold as tries to fire but won’t start
Hot will start after a few goes

Done so far
Injectors leak down test 1 replaced
All 4 glow plugs faulty replaced
Cam sensor tested ok
Map sensor cleaned
Head gasket coolant gas test ok but engine cold
Fuel pressure high 4000psi low pressure supply 313.20
Manifold pressure 14.4psi
Fuel pressure regulator current 0.65
Air flow 388.6 mg/str
All at idle
Previous owner replaced the low pressure pump
and there are no fault codes

You replaced the dodgy injector with one with the same part number as the others? 75 and freelander injectors are different and can't be mixed. Your air flow is low at idle, should be 510-520mg/s

[martinwest]

Hi Jamie
I got the injector from eurocarparts ordered on the reg and what would cause the air flow to be low could it be down to running lumpy when I took the live data?

[Mike Noc]

One other thought - have you checked the EGR valve? If that is bypassing then it could cause lumpy running, smoke and lack of revs. Try unplugging it then whip the pipe off and visually check it is closed fully.















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