Bad fuel economy - reasons?

Quote:

---

Originally Posted by threedogs

Its straight forward as ET says dont over think it
just spray over a white tissue or cloth.
Not sure on the size of the torx tool required
its either a number 2 or a 20,,,,anyone,,,
Make sure its dry before installing it again

---

Thanks threedogs. Yeah I think i read somewhere it was a T20.

With cleaning the intercooler. Is it ok to use degreaser then flush with water?

Quote:

---

Originally Posted by azzacalabaza

Thanks threedogs. Yeah I think i read somewhere it was a T20.

With cleaning the intercooler. Is it ok to use degreaser then flush with water?

---

Yes but make sure you dry it properly with say a hair dryer,
Tape up both ends and use a footy bit on a hand pump to create
some pressure. nothing you can do its just to comfirm its leaking.
Also as suggested clean the oily section and tighten, check the
oil level too they dont like them overfilled

Quote:

---

Originally Posted by Nisshead

Being a CRD, drive it like you stole it...lol These motors love revs and perform best in high RPM range. I hit 4000RPM every gear change
With that oil leak, just clean it and tighten the clamp...should sort that out

---

I'm with Nisshead here, mine is an auto and I drove it like I was scared to break something. Was sitting on the 13L/100 + on highway.
Now I let it stretch its legs and regularly get mid 11L/100, that includes hills and sitting on the limit. I don't use OD as soon as I hit an incline.
Try it and see if it makes a difference.

Well. I cleaned the MAF sensor and refilled the tank. Will see what difference that makes then post the results.

Well it seems cleaning the MAF sensor did nothing. I'm still getting over 16L/100 and half of that was highway driving. :(

Could there be an issue with injectors ?

Quote:

---

Originally Posted by azzacalabaza

Well it seems cleaning the MAF sensor did nothing. I'm still getting over 16L/100 and half of that was highway driving. :(

---

i live in the country.90% of my km are at 110....unless it a hill or a 90 degree corner....we always get around 15.5 to 16 nearly every tank....it sucks but thats is what i am use to after 2 and a half years

Yeah. I've been reading heaps on different forums. Looks like there were some that are just good on fuel and others that just suck (the ones we got). Some have bought brand new and get 15-16L/100km and others get 10-11L/100km with the same vehicle specs. I wonder if replacing the MAF altogether might help. Will also block of EGR as that may be malfunctioning causing higher fuel consumption.

Quote:

---

Originally Posted by azzacalabaza

Yeah. I've been reading heaps on different forums. Looks like there were some that are just good on fuel and others that just suck (the ones we got). Some have bought brand new and get 15-16L/100km and others get 10-11L/100km with the same vehicle specs. I wonder if replacing the MAF altogether might help. Will also block of EGR as that may be malfunctioning causing higher fuel consumption.

---

To be honest. If someone says they are getting 10-11 ltrs in a 3T hunk of metal powered by a tiny 4cylinder 3ltr diesel, i really dont think they have done their calculations right.

Sent from my SM-P600 using Tapatalk

FWIW, Mrs MB's old GU 02 3.0L manual immaculate wagon (stock rocket) with zero fruit bolted on and not towing could get 12.0L if we tried hard enough on the flat highway. Never really got it over 16.0L, it was a great thing I reckon, more than fit for its purpose at our time in life !