1Z fuel consumption

artie b

Veteran Member
Joined
Sep 23, 2001
Location
zip code 46371
TDI
97 B4 TDI stock, have owned and repaired 4 B4 TDI's since 1996
Hi, I know that the ECM will display Injection quantity and what would be an approximate of fuel consumed at 1800 RPM with a light load? Anyone have a close guess?
 

JordanTr

Veteran Member
Joined
Mar 28, 2022
Location
Kimberley, BC
TDI
1996 B4V, 2006 Dmax, 2005 Allroad, 2005 BHW
If we assume cruising along a highway at 60mph is an equivalent light load, you’re probably talking 3.5-5L/hour.
 

burpod

teh stallionz!!1
Joined
Nov 27, 2004
Location
cape cod, ma
TDI
82 rabbit vnt ahu, 98 jetta vnt ahu, 05 parts car, 88 scirocco.. :/
there's a measuring block with fuel consumption in Lh/hr, i think 015 on stock measuring blocks. if you're on a stock tune with stock fueling, the IQ and fuel consumption values should be relatively accurate, so you can do the math when you know the speed. 60mph actual + 3.8L/hr should then of course be ~60mpg at that moment
 

turbodieseldyke

Veteran Member
Joined
Jun 6, 2010
Location
Free Mustache Rides
TDI
98 jetta
Your B4 has a Fuel Consumption wire at the instrument cluster. If you're inclined, you could build a MPGuino (arduino-based) gadget to read that signal and have an external MFA device, and get real-time mpg and gallons/hour.

The jetta lacks that wire, but you can add one to the ECU (pin #9 iirc) and run it into the cabin.
 

artie b

Veteran Member
Joined
Sep 23, 2001
Location
zip code 46371
TDI
97 B4 TDI stock, have owned and repaired 4 B4 TDI's since 1996
My plan is to use the 1Z as stationary power. My HP required for this generator is 40 HP at 1800 RPM. Ive been around VW diesels since 1978. I have several 1.6 NA that would fit the requirement. Those engines are very efficient. I've had excellent luck and experience with the 1Z, since 1996. I appreciate the input, thanks Artie
 

artie b

Veteran Member
Joined
Sep 23, 2001
Location
zip code 46371
TDI
97 B4 TDI stock, have owned and repaired 4 B4 TDI's since 1996
I have the tach2vss ordered. Laying out the flywheel and starter arrangement from facing the transmission. Fabricating a plate, pointing the starter towards the front of the engine. The devil is in the details. Thanks again, Artie
 
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