OnTheEdge
Member
I think this may help:
Freelander TD4 PCV valve modification to BMW part - YouTube
Apologies if it doesn't.
kev1nlm
Active Member
although it is true if the engine is breathing heavy it will blue smoke, (the only cause of blue smoke is oil, fuel is generally grey/white, air or lack of is black and water is white)what you are forgetting is that it only does on start up and has only started doing it since the cold weather started. None of these are related to a breather problem as any excess crankcase pressure will go overnight and it will take a little while for it to build up again unless there is a loss of cylinder pressure into the crankcase.
i hate this car now sent almost a grand since i got it and now this and i dnt no where to start because its only a cold thing and not as in engine cold i mean weather cold
OnTheEdge
Member
The cold has absolutely nothing to do with the blue smoke.
Because air is vaporised during combustion is why we see lots of steam from the exhaust, this is what makes the blue smoke more noticeable in colder weather.
The blue smoke clears in a very short time and it does idle lumpy.
The fact that it isn't using oil and that loss of power isn't mentioned, rules out loss of cylinder pressure. Therefore, a pressure test is not required.
The engine's crankcase contains numerous gases, moisture as well as unburned fuel vapour. These vapours must be removed to prevent the oil becoming contaminated. Contaminated oil leads to sludge formation. The breather system removes these nasty things from the crankcase to prevent sludge, returning them into the inlet manifold so they can be combusted.
Like I said. Look at the cheaper option first and check the breather before considering any expensive diagnostic.
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kev1nlm
Active Member
The engine's crankcase contains numerous gases, moisture as well as unburned fuel vapour. These vapours must be removed to prevent the oil becoming contaminated. Contaminated oil leads to sludge formation. The breather system removes these nasty things from the crankcase to prevent sludge, returning them into the inlet manifold so they can be combusted.
I'm still not quite sure what effect the cold would have on this but I suppose time will tell in the end, just offering an experienced opinion.
I'm still not quite sure what effect the cold would have on this but I suppose time will tell in the end, just offering an experienced opinion.
jamesmartin
Well-Known Member
blue smoke is oil and water vapour will help show it ,oil burn on start up is usually valve stem seals
kev1nlm
Active Member
it is but with it only showing on cold days and with a temporary lumpy idle that's why I thought perhaps a slightly worn bore
jamesmartin
Well-Known Member
low compression could give lumpy running till it warms up ,but could also be a poor injector
How would I test a l series injector
Is there anyone local to me who could get e glow plugs out
Least if a injector was the cause I'd put the Sdi ones in lol
The bad luck I have had with this car I see it been expensive and after the year I have had it isn't going to happen
Is there anyone local to me who could get e glow plugs out
Least if a injector was the cause I'd put the Sdi ones in lol
The bad luck I have had with this car I see it been expensive and after the year I have had it isn't going to happen
OnTheEdge
Member
If you have a multi-meter, you can test them without removal. First remove the bus bar. Select the desired ohms on the multi-meter. Place the black/negative on the thread of a glow plug and the red/positive on the top end of the plug.
How to use a multi-meter. Watch this @ 3.20:
How To Use A Multimeter - YouTube
It is the same as checking a glow plug.
Take the reading from each. If they all give a similar reading, the plugs are fine. I'm unsure what resistance is required with your glow plugs but if any are off, you will see this with the multi-meter.
If you really need to remove them, get some Plus Gas at your local motor factors. It's like WD40 but more penetrable. Spray on the threads of the glow plugs. This will gradually find its way through. Do it several times over the next few days.
Have you tried the breather yet?
OnTheEdge
Member
Anything that is worn and creating blue smoke will not stop creating blue smoke. It will also use oil from the sump and reduce oil level. This will be evident on the dipstick.
tnseal
Active Member
A pump that is too rich I.e. too much diesel will give you the same symptoms. My diesel Peugeot does the same because of the enrichment device on the pump. During -15c the smoke is really bad and I run the engine for a while, then allow the heat to sink in, then restart. Thus with a warmer engine the warmup is quicker and the pump does not over fuel.
tnseal
Active Member
Emissions are governed by the Electronic Control Module and if yours has been chipped or altered in anyway then the mapping in the ECM could be overfuelling. Without trawling through these badly written Wksp manuals, all the sections are typical modern fit another unit or plug it into a diagnostic machine. No one takes stuff apart nowdays .Grrr.
