It will make a difference if the flow rate is different.

And here's why.

Your fuel injection system uses one oxygen sensor, one throttle position
sensor, etc to monitor and make adjustments to the entire engine.

Fuel delivery is changed by varying the amount of time each injector is on.

Also, until a change is indicated by the computer, each injector is fired
for the same amount of time.

The system works great as long as everything is in balance. Actually, the
system assumes everything is in balance.

But install a injector with a 20% greater flow rate and that cylinder will
get 20% more fuel than the others!

Same goes with a injector with 20% less flow rate - that cylinder will get
20% less fuel than the others!

And the computer can't measure & adjust only one injector. It only knows the
O2 is off and tries to compensate by changing the on time of all of the
injectors at the same time.

So, the result is your Vanagon or whatever vehicle it is runs like crap
because the engine is in a state that can't be tuned by the computer.

The same error occurs with a manifold vacuum leak or a dirty injector.

Tom
www.towercooler.com

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM] On Behalf Of
zzyzx
Sent: Saturday, January 22, 2011 1:48 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Fuel Injector Question

280 150 106
122 906 031D

Would the above part numbeed fuel injector from a 1978 type II van
cause/contribute to fuel injection system problems/failure on a 1980
Westy with electronic ignition system?

Blue injectors on 1980 westy
The above part number is a gray injector.

TIA
Steve