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What Injection System And Engine Code/number


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5 replies to this topic

#1
Las

Las
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Joined: 10 Oct 2010
I just found the little plate riveted to the block and it says D6C, but I see that you sometimes talk about Xu????. What does that number tell?

Also checked the ECU and it's a 125 2 row, and as far as I can tell (haynes book) it must be a Bosch Motronic ML4.1 system, am I correct?
Well the reason for asking is that I want to play a little with the fuel pressure, maybe raise it 0,2-0,4bar from stock. As you might have read in another topic I'm trying to find out where the horses went!

#2
Jer309GTi

Jer309GTi
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Joined: 25 Apr 2005
  • Name:Jeremy
  • Location:Bristol, UK
XU is the engine type, it will be followed by a 9 for a 1.9 'XU9' and then info about the number of valves per cylinder, 'XU9J4' being MI16, XU10 is a 2litre

#3
KRISKARRERA

KRISKARRERA
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Joined: 27 Nov 2002
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You need to do a whole load of basic system checks and even then if everything seems ok it might just be that the engine is tired and in need of a rebuild.

#4
John

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Joined: 27 Mar 2010
QUOTE
XU9J4 = D6C
early Mi16 88-89, no catalytic converter
1905cc
160hp @ 6500RPM
173Nm @ 5000RPM

QUOTE
XU9J4Z = DFW
later Mi16 89-92, cat version.
1905cc
150hp
174Nm @ 5000RPM


QUOTE
XU10J4Z = RFY
latest Mi16 92-96, cat
1998cc
155hp @ 6500 RPM
183 Nm at @ 3000rpm


QUOTE
XU10J4RS = RFS
306 GTI-6, cat
1998cc
167hp @ 6500 RPM
197Nm @ 5500 RPM

Edited by John, 22 October 2010 - 07:31 PM.


#5
KRISKARRERA

KRISKARRERA
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Sorry to be pedantic but I just thought I'd add that for the UK the XU9J4 with D6C ran from July 1988 until (I think) October 1992 and had 181nm of torque. From 1991 they had a knock sensor.
And the XU10J4's torque peaked at 3500rpm.




#6
Las

Las
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Joined: 10 Oct 2010
thanks for the info.