saxo smoke. Help please

[erman83]

friends saxo 1.5 diesel TUD5 VJX engine. There is white smoke in my car. the injector is clean. why is this smoke ??

VİDEO: https://youtu.be/2TgPTTHsOcw

1-) Timing?
2-) injector?
3-) Valve?

???

[axsaxoman]

white smoke from a diesel is always caused by excess or unburnt fuel--
and the puffs of smoke indicate it is a faulty injector , could be dripping --swop that one to anther cylinder--if smoke moves to it --then you have your answer
If you think it is smoking evenly from all cylinders --pump or timing of pump --is incorrect
If it is the later type with ecu then it could be that or the advance unit
sounds very noisy --check valve clearances --shims may need changing

[erman83]

1 and 2 pistons smoke

[erman83]

1 and 4 pistons smoke

[erman83]

1 and 2 pistons smoke

Cancel

[erman83]

Not 1 and 2.

1 and 4 smoke

[erman83]

injectors are clean
There are 3 possibilities
1 timing
2 valve adjustment
3 air in the diesel hose
??

[erman83]

I don' t know

[axsaxoman]

first job then is get injectors tested properly
lets face it it must be at least 15years old !!

[erman83]

the injectors were tested. It gives 120 bar pressure. No leaks.

[MartinObviously]

It's the injection pump timing, VJX engines have a semi electronic advance and these fail.

You have Bosch pump, there are 2 plugs. one is black and one is blue (both are 2 pin plugs). Unplug the blue one and see how it runs. That should default it onto mechanical static timing.

[erman83]

Thank you very much. I'm going to have to get a blue socket. I'll give you the info.

[MartinObviously]

Thank you very much. I'm going to have to get a blue socket. I'll give you the info.

No i meant disconnect it. :y:

Lucas pump in picture, but the connector [9] is blue and the same as the Bosch Pump

https://www.dropbox.com/s/3yq4c8ofpigyaee/Pump.png

[erman83]

I do not fully understand. will I try to remove the blue socket?

[erman83]

I apologize, I do not know your language at all.������

[erman83]

:panic:;);)

[erman83]

The blue socket came out. there is no smoke.
what is the problem?

[erman83]

but when the blue socket came out the engine worked very jerky. what will I do?

[erman83]

Friend please answer

[erman83]

please I need an urgent response

[MartinObviously]

Sorry I was travelling away from home. Engine should run good with the blue socket unplugged.

Re-tension the timing belt to set the pump timing back to centre. Only if you are confident.

[MartinObviously]

Also make sure fuel filter has no water.

Check the fuel feed ( clear pipe ) has no bubbles. If there is bubbles there is a fuel leak.

[erman83]

Welcome friend:):):)

blue socket. No smoke. Is the trigger belt loose?

[erman83]

or the timing is wrong?

[erman83]

Re-tension the timing belt to set the pump timing back to centre???

I do not fully understand

[axsaxoman]

Sorry I was travelling away from home. Engine should run good with the blue socket unplugged.

Re-tension the timing belt to set the pump timing back to centre. Only if you are confident.

If belt needs retensioning --then surely time to change it?--
must be very worn to cause a timing problem

[erman83]

new changed

[MartinObviously]

If belt needs retensioning --then surely time to change it?--
must be very worn to cause a timing problem

The bolts which hold the pulley to the hub can slacken and cause the timing to move. It's far more critical than on a a petrol engine. Re-tensioning the correct way will set everything back to exactly 0.

[MartinObviously]

I think the diesel pump is faulty internal.

If it runs good with no blue socket. Leave it disconnected.

[erman83]

do I completely unplug the socket

[erman83]

but the engine is very jerky. blue plug at the socket?

[MartinObviously]

Did you check the fuel line for leak?

You should not see any bubbles

[axsaxoman]

new changed
was it ok before change ?

[erman83]

No bubbles in fuel hose

[erman83]

blue plug comes out but the engine is very jerky.

[erman83]

??????

[erman83]

blue plug comes out but the engine is very jerky

[MartinObviously]

was it ok before change ?

blue plug comes out but the engine is very jerky

Was your engine jerky before change?

Yes or No?

I think timing is too retarded. Of the injection pump.

[erman83]

ok I will check

[erman83]

Hello friends https://i.hizliresim.com/nJA4Za.jpg (https://hizliresim.com/nJA4Za)
what does the gasket in the picture. my car just can't be broken.

[MartinObviously]

fuel pressure relief. On hot day.

If gasket was faulty, fuel lines would have bubbles.

[erman83]

Hmm ok. Thank you

[erman83]

Problem not solved. What does the black and blue plugs on the Bosch pump do?

[MartinObviously]

Problem not solved. What does the black and blue plugs on the Bosch pump do?

Blue plug - electronic timing advance. it uses a 12v pulsed input from ECU.

Black plug - I am not sure.

[axsaxoman]

after all your messing about --and getting nowhere --why not take it to someone who can plug into the ecu and set the timing correctly while engine is running --
they will also be able to see if the electronic advance is working as it should
on diesels smoke is caused mainly by incorrect timing or of course worn out engine parts like valve guides and piston rings
it will be timing of pump --could be pump is knackered --but proper timing set -up after doing other mechanical checks --like the valve clearances,proper injector testing is the way to go .
you changed the belt and have never answered if problem started after this --which makes me think it did --so it will be pump timing
I once had a car with only 8k from new+ under 1 year old and it would not start first thing --but after first start of day --fine --cause valve clearances too close ,but as engine warmed up the alloy head expanded and moved camshaft away from cam follwers--so then it had some clearance ,
vlave clearnces too wide --will alter valve timing as well --but more problems when they are too tight

[MartinObviously]

after all your messing about --and getting nowhere --why not take it to someone who can plug into the ecu and set the timing correctly while engine is running --
they will also be able to see if the electronic advance is working as it should
on diesels smoke is caused mainly by incorrect timing or of course worn out engine parts like valve guides and piston rings
it will be timing of pump --could be pump is knackered --but proper timing set -up after doing other mechanical checks --like the valve clearances,proper injector testing is the way to go .
you changed the belt and have never answered if problem started after this --which makes me think it did --so it will be pump timing
I once had a car with only 8k from new+ under 1 year old and it would not start first thing --but after first start of day --fine --cause valve clearances too close ,but as engine warmed up the alloy head expanded and moved camshaft away from cam follwers--so then it had some clearance ,
vlave clearnces too wide --will alter valve timing as well --but more problems when they are too tight

I'm with you on the pump timing. it's not making sense.

Also, these have buckets and shims :y:

The ECU is a pig on these. it has no feedback for the pump timing. it's a preset PWM signal for a given engine rpm and the rate of change of rpm from the crank sensor.

[axsaxoman]

99% of the time pump timing if a diesel smokes

[JamieConway88]

If the fuel pumping injection is not broken, the problem may because of leaking coolant. You may see more information and solution here:
https://carfromjapan.com/article/car-maintenance/white-smoke-from-exhaust/