I recently did a JDM engine swap on my 3.4 liter engine today it gave a code for misfire on cylinder 1 I've swapped around the coil packs no change I changed plugs and wires no change tested fuel injectors none of them are registering my question is is it possible for all of them to go out at the same time

 

Is it missing on #1 and running on all 5 other cylinders?

It's exceedingly unlikely for them to all go out at once, sure. How are you testing them?

I had one go out on mine earlier this year, #6. I did the same things to determine if it was spark or fuel, nothing wrong with the ignition, so that just left the injector. It was running fine when cold, going into a persistent miss with codes when warm. When I took the injectors out, #6, even though it was cold, and it was running fine when cold, did ohm out differently from the other 5.

 

yes the rest of them were firing fine just that number one cylinder wasn't firing I went ahead and picked up six refurbished fuel injectors I know they're supposed to read Around 14 ohms however the new ones are reading 13 ohms is that a big deal my ohms meter is from Harbor Freight so that might be why it's not giving a credit rating

 

I wouldn't worry about a 1 ohm difference. I can't recall what the readings were on my bad injectors, but it was WAY off.