Trouble understanding why multimeter gives different resistance readings
Since no one in the comments posted an answer I will post it here.
First:
My multimeter is not the best multimeter. According to the manual I need to short circuit the probes and record the result for the 200 ohm setting. After taking a measurement I subtract this from the observed value to get the answer.
Second:
The specifications had temperature in a little box next to the resistance tolerances I looked over. Since resistance and temperature are related this was important.
By doing the short circuit and then letting the fuel injectors cool down to ~70 degrees I was able to achieve a reading that was within specification.
I appreciate everyone's help!