jaguar xtype 2.0d sport

onceuponatime_2

Italian tune up all the way! In other words floor it if its safe too do so.

forgotmyname

Modern diesels need a good thrash to blow the soot away.

Blocking the EGR can cure a lot of smooke issues. But if yours is a euro 4 emission model then thats not on it may cause the engine light.
If its a euro 3 model then clean it and block it.

GolfBravo

I do agree with the above suggestions of a good thrash first - it may cure the problem.

However, make sure the engine is fully warmed up - revving cold diesel engines slowly kills them.

Secondly, you need to actually drive the car, and not just rev it stationary in neutral - it puts too much pressure on the cambelt and it may even snap. Engines are designed to rev under load, not just free rev.

andrew-the-cat

I have never heard of a "BEL valve" but black smoke coming from the exhaust of a diesel is common, especially in older ones. It happens under hard acceleration because the ECU causes too much fuel to be injected into the cylinders, and until the turbocharger spools up there is not enough air for a correct fuel-air ratio, so some of the fuel is not burned properly and leaves the exhaust as black smoke. It doesn't happen so much with more modern diesels as the ECU programming is significantly better so they don't overfuel under acceleration while the turbo is spooling.

My old car did it, if I put my foot down in 3rd at low revs going up hill I could leave an impressive cloud of black smoke behind me. I remember pulling out of a petrol station once while towing a loaded trailer it kicked out so much smoke I couldn't see the car behind me!

peterth125

Thanks to all who have replied very interesting comments.
Would you say it was just a niggling problem that I can live with or should it be seen too PDQ.

Strider590

I'd say find the EGR, unbolt it, check it's clean and if not clean it and save yourself a good £200+

Worst that can happen = you can't clean it, you bolt it back on and the problem stays as it was.

forgotmyname

peterth125 wrote: »

Thanks to all who have replied very interesting comments.
Would you say it was just a niggling problem that I can live with or should it be seen too PDQ.

If its overfuelling and smoking fairly badly it will clog the variable turbo vanes.

You may get away with having the turbo removed and cleaned and refitted. Or you may need a new turbo.
If its a euro 4 car with electronic actuator then you could damage that. Then its ££££.

Just get a blanking plate and block the EGR. Cost you about £3 if that cures it leave it blanked. If its a euro 4 car though the engine light may come on with a low flow code. That in itself is not an issue it wont do any harm. But will fail the new MOT.

If thats the case simply remove the plate and fit a new EGR valve.

Jag dealer on ebay sell them for £60 - £70.. Thats cheap.

Buy the same part from Ford and its double.

Notmyrealname

Strider590 wrote: »

I'd say find the EGR, unbolt it, check it's clean and if not clean it and save yourself a good £200+

Worst that can happen = you can't clean it, you bolt it back on and the problem stays as it was.

This. On my Mondeo the EGR valve at 90k was so blocked there was literally just a hole in the sludge about an inch in diameter. Also when I took the inlet manifold off as well, it was virtually blocked up on number 1 cylinder getting progressively better as you got to the fourth one. So if the EGR is full of sludge then clean the manifold.

I checked it again 60,000 miles later and it was still as clean as a whistle so I've no idea what type of journeys it had done before I bought it.

Strider590

Notmyrealname wrote: »

I checked it again 60,000 miles later and it was still as clean as a whistle so I've no idea what type of journeys it had done before I bought it.

Short one's