Freelander 1 freelander td4 crud on inlet ports

websun said:

Question is if there is any way of cleaning that part without removing the head?

Click to expand...

You mean the injector bore?
I just used a few very small bursts of brake cleaner in each bore to clear them. I'd attached a piece of soft sponge to a long screwdriver then pushed it into the hole and spun it around as I pulled it back out. Went in clean, came out dirty so that worked well imo. Most of the brake clean should evaporate but there'll be a few coughs and splutters on first start up as the rest is mixed with the air and fuel. All the crap should get blasted through the exhaust ports. It's not ideal but do you really want to take the head off? I can't think of a bigger job given these are chain driven engines.

I made sure the injectors were really clean before I put them back in and applied a thin film of copper grease to the shaft. Makes getting them out next time a little easier.

That one was very clean in my case and the injector went off extremely easy no force needed but I had to put wd40 a day before. I was thinking more even below the injector, where the valves are. And yes removing the head is the last thing I want to do on this car, prob never do it. If I have to will scrap and get a petrol again.

websun said:

That one was very clean in my case and the injector went off extremely easy no force needed but I had to put wd40 a day before. I was thinking more even below the injector, where the valves are. And yes removing the head is the last thing I want to do on this car, prob never do it. If I have to will scrap and get a petrol again.

Click to expand...

Head off is really the only way you'll be able to clean inside there. I'm wary of additives and treatments that claim they can clean inside the cylinder. The injector cleaner I used once just caused more problems. I'm sure it cleans the lines, etc but where is all that 'dirt' going? Forced through the injectors causing further nozzle blockage or returned to the tank to contaminate the fuel? Seems pointless.

It really should clean itself organically over time if you're able to keep your fuel clean and avoid driving at low rpm's (causing inadequate, low temp combustion and carbon build up, etc). Every once in a while I'll get a puff of white smoke from the exhaust. Tells me it's just loosened some build up and thrown it into the combustion mix. You could pull the rocker cover and check the valve clearances to [potentially] determine whether there is much build up around the valves/ports but, in my experience, a bit of aggressive driving does an engine the world of good

weemac said:

in my experience, a bit of aggressive driving does an engine the world of good

Click to expand...

Absolutely. Diesel engines soot up really badly, unless they're running at over 80% power for an extended period. A good couple of hours on the motorway at speed, will give it a good clean though, and run better as a result.

Going to Southampton tomorrow 600 miles round trip. That should do it.

Well did 300 miles must be clean now.
But I have a different issue now... I hear a strange loud buzz when I turn off the engine. Stops after a few seconds...
Maybe the HP pump? It's coming from the battery corner...

I hear a strange loud buzz when I turn off the engine

Click to expand...

recent egr delete ?
be named the 'dying duck' sound ..
when certain vac tubes are left unblocked ..
see pics here :
https://www.landyzone.co.uk/land-rover/where-does-this-go.223312/#post-2536215
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Yep duck dies. Thanks

I don't quite understand what I have to do. My egr blank does have that small pipe to block the hose. And it is connected to the solenoid... still duck sound

If I do it after your diagram I can remove the egr solenoid altogether yes?