A

Andrew bibby

Member
Hi first time so here goes
I have a 2004 Freelander TD4 BMW Engine D-204 D3 is this the same engine as the M47 2.0L I4 16v Diesel
as im looking to do a engine change.
thanks
 
Hi Col thanks
I`ve had issues with it since we brought it a few years ago now, and have done all the things that have been mensioned on this site
it starts missing at 1500/2000 rpm with blue smoke coming from exhaust plus lack of power and rough starting sometimes
thanks
Andy
 
Andrew bibby said:
it starts missing at 1500/2000 rpm with blue smoke coming from exhaust plus lack of power and rough starting sometimes
thanks
Click to expand...

Changing the engine won't help.

We need to know exactly what you've done to solve the issue. I seriously doubt it's engine related though.

Oh, and the engine from a BMW won't fit, only M47R (R means Rover) engine will fit, but its irrelevant anyway, as the issue is likely elsewhere.
 
Hi Nodge68
Things I`ve done so far are,
Had injectors reconned
Blanked off the EGR valve
Changed MAF censor
New High Fuel Pressure censor
Turbo reconned
think thats it
thanks
Andy
 
Does it misfire and make blue smoke if you hold the revs at 2k? If so this is known as the 2k misfire, which does happen on some M47 engines for some reason, mine did it, and I wasn't alone.
It also misfired if I used light throttle, like when going down a gentle hill.

I believe it's a fuel mapping issue, but it could also be related to blanking the EGR, maybe coupled with excessive oil mist from the breather system.

I was planning to test the latter by blanking the breather where it enters the turbo, and route it to the atmosphere instead.
 
Andrew bibby said:
yep misfires like yours and with gentle throttle down hill.
is there a re-map for the fuel issue that you know to
Click to expand...
In that case, it's pretty difficult to identify the issue, but don't bother replacing the engine, as the issue is elsewhere.

I'd first try removing the blowby gasses from the induction system, which is my theory as to the cause.
 
Andrew bibby said:
how do you remove blow by gasses? and do you recommend doing anything else?
Click to expand...
If you look at the pipe between the MAF and turbo, you'll see where the crankcase breather joins it.
Now follow the breather pipe back to the air filter housing (the engine breather exits there) and disconnect it.
Here's a picture, I've put a red dot on the connection to pull off.
Screenshot_20211231-191732_eBay.jpg

Then block the pipe you've pulled off with something suitable in size, a bottle cap for instance.

This will stop bypass gasses from entering the turbo, so the engine will be burning "clean" air.
If the issue goes away, then you've proved it's bypass gasses upsetting the engine.

Once you know where the issue is, the chance of sorting it is greater. ;)
 
So how do you fix the problem with by pass gases. Great post by the way. I have replaced just about everything and still have a lot of smoke coming out the back as well.
Crankcase breather, airflow temp air, fuel rail sensor, MAF, air filter, injectors, even went to the bother of getting a nice set of brass bleed off connectors on top of the injectors and new hose. Replaced all the turbo hoses. So would love to hear what I could do next, now that I've retired and have a limited timeline to work with on my FL1. The faults will probably out live me.
 
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