Engine shake and a lot of smoke

[b6.mo]

Hi guys, I bought an Audi A4 b6 1.9 tdi a few months ago. When I bought the car it drove fine, only issue being that the car would shake on a cold start for about 20 seconds.

The shaking gradually got worse and now shakes a ridiculous amount along with a lot of white smoke. No engine lights are showing however a fault does come up on the diagnostic thing and it shows '4th cylinder miss fire'. I purchased an injector from a local scrapyard, had it fitted and still the same problem.

The mechanic has now told me it needs a new engine but I'm hoping the problem can be solved without having to purchase a new engine. Any ideas?

 

[dualmono21]

get the car scanned and post up the codes
a common problem on the 1.9tdi engine is for the wiring harness which connects the injectors goes faulty or reads a high impedance and stops the injectors working
to be honest you should have changed the wiring harness before changing the injector

 

[b6.mo]

Ah sorry forgot to mention, mechanic tried changing the wiring harness. He happened to have a new harness in the garage.

 

[dualmono21]

no problem

ideally you still need the codes the car is giving you , this could give you a good insight into whats actually wrong

 

[desertstorm]

Have you checked the glowplugs ??? . If the fault occurs only on cold starts then it's not going to be an injector fault.
Does it clear when the engine is warm.
If so I would get a new mechanic or somebody who knows something about diesels as he is either a poor mechanic or is trying to rip you off.

Karl.

 

[b6.mo]

The engine shake and the smoke is now constant, it continues even once the car has warmed up. I'll get the fault code and post it up tomorrow.

 

[b6.mo]

I haven't checked the glowplugs yet, can they cause the engine to shake excessively?

 

[B5NUT]

No, they are only used at engine startup. Before chucking the engine get a second opinion from another garage. I got advised to chuck an engine when it was a simple head gasket fault.

 

[Viking]

I haven't checked the glowplugs yet, can they cause the engine to shake excessively?

No, Glowplug fault would be poor starting and a bit of smoke for a few seconds. No misfiring really. Look elsewhere for your problems.

What engine code is your car?

 

[b6.mo]

My engine code is avf. I'll be getting a second opinion tomorrow hopefully.