Car juddering?

[oigle]

I don't see what all this has to do with juddering on light acceleration......the resistor is the best fix for the motor though. Nothing to do with juddering tho', in my opinion.

 

[bembo449]

could not also be transmission shudder ??

 

[mioba]

I would go to a proper merc Indy and get this checked out. You could be throwing good money away and that’s not gonna be cheap on this model of car.
It could even be something more simple like engine or g box mounts or a vacuum pipe.
Get it done once and done right.

 

[bembo449]

could be a sticking EGR too , spit balling is pointless till its been on star

 

[John Laidlaw]

There may be someone closer but
https://www.rhautoservices.co.uk/
In York will sort you out- Richard knows Mercs and that’s what you need now

 

[LostKiwi]

The crankcase ventilation is a pressure relief valve that lets the water/fuel/oil out which have bypassed the piston rings into the top of the engine ?? I can't give anything as to how much of this sludge it should let through , but it is this sludge that clogs the inlet manifolds eventually . Hopefully someone else will tidy up my explanation

Almost right Wighty....
When an engine runs some of the combustion pressure in the cylinders gets past the piston rings. If this was left unvented the internal pressure of the crankcase would rise and blow all the oil out, either through seals, gaskets or worst of all up past the piston rings when the piston is on an induction stroke (which can lead the diesel runaway).
The gases also contain combustion byproducts which when the engine Colls form harmful acidic compounds in the sump.
In the old days the breather was nothing more than a pipe vented to atmosphere but as time has gone on it's been vented back into the inlet to be put back into the combustion cycle as a way to reduce harmful emissions (the breather condensate emissions are pretty nasty).
Many petrol engines operate at crankcase pressures less than atmospheric (positive crankcase ventilation) and have more than one breather. Smart Roadsters for example have 2 breathers, one for the crankcase and one at the top for the camcovers. In turbo petrol cars one will feed into the inlet manifold with a one way valve (you don't want boost pressure in the crankcase) and the other into the inlet tract between air filter and turbo.

 

[Botus]

have we talked about engine mounts yet ?

 

[mymercandme]

Hi, thanks for your replys. Is it alright todo 9p thing, would this interfere with m.o.t. test?.
If linkage is no good, why can't it be repaired? If linkage is no working does it always stop working in the open position?
If motor and linkage are o.k., is it possible to put some carb or something in manifolds to get rid of carbon ?

 

[oigle]

9p thing would not be a mot concern. You can repair the linkage or replace it but, with a choked manifold, it will fail again. Normally it will default to open position but I would lock it there manually. NO - cleaning requires removal and a LOT of elbow grease. Bitch of a job. Once done, if the egr is deleted, it won't re-occur.

Ian.

 

[mymercandme]

Hi every one, is it possible to check to see if linkage (inlet ports) is sticking or stuck ect without removeing turbo? Thanks in advance.