E90Post
 


ECS BMW
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > Shocking MPG



Reply
 
Thread Tools Search this Thread
      03-18-2013, 03:17 PM   #1
tintin1012000
New Member
0

 
Drives: bme 320d
Join Date: Mar 2013
Location: ireland


Posts: 11
iTrader: (0)

Shocking MPG

Hi all,

Im driving a 320d E90, Current MPG is about 30Mpg, I have cleaned the EGR valve (It was fair bad !! ) EGR temp was only 60 deg, now its up to 80-85 deg...done a full service, noticed that one of the intercooler pipes was broken, replaced that, also changed the glow plugs.... What can I do next???,
Appreciate 0
      03-18-2013, 06:13 PM   #2
BillionPa
Second Lieutenant
2

 
BillionPa's Avatar
 
Drives: 335i
Join Date: Feb 2013
Location: USA


Posts: 288
iTrader: (0)

add some acetone to the fuel, 2oz per gallon of fuel in the tank in addition to whatever lubricity additive you are using, it will help clean the injector nozzles and the inside of the combustion chambers

Also, check air filter
Appreciate 0
      03-18-2013, 07:32 PM   #3
BillionPa
Second Lieutenant
2

 
BillionPa's Avatar
 
Drives: 335i
Join Date: Feb 2013
Location: USA


Posts: 288
iTrader: (0)

also, the thermostat is an area of contention on the turbodiesel, not allowing full engine warmup (causing poor mileage). check the coolant temps and warmup time to see if the thermostat is malfunctioning
Appreciate 0
      03-21-2013, 12:12 AM   #4
Blue Streak
Gunny
United_States
11

 
Blue Streak's Avatar
 
Drives: '07 E90 335i 6MT
Join Date: Sep 2007
Location: San Diego, CA


Posts: 612
iTrader: (0)

Garage List
2007 E90 335i  [4.50]
Poor mileage? What is the normal/advertised MPG as opposed to your 30MPG? Probably close to 40, I would imagine.
__________________
2007 E90 335i 6MT, ZSP, Nav, PDC, CA, Montego Blue, Terra Dakota leather, CDV, clutch-stop, E46 M Shift Knob, Logic HVI, JB4 PnP, E85/CA-91 oct 50/50 fuel on map-5, MS 3" downpipes, RE 12mm(f)/BMS 15mm(r) spacers, Blacklines, LUX 5.0, DAEOS (Vista) harness, GP Thunder 7500k fogs, 35% sides-20% rear tint, matt black kidney grill, matt black 335i trunk badge
Appreciate 0
      03-23-2013, 10:30 PM   #5
BillionPa
Second Lieutenant
2

 
BillionPa's Avatar
 
Drives: 335i
Join Date: Feb 2013
Location: USA


Posts: 288
iTrader: (0)

normal highway on the 4cyl diesel is probably 50ish
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 12:43 AM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST