Last week I was cruising down the highway, and I noticed I was down on power as if the car was misfiring as well as a weird smell. I limped it to the shop and it was diagnosed as fuel injectors 2 and 3 were leaking and also to replace a bit of fuel line. It all got replaced and for the most part is running normally. Some slight stumbles on startup and there was 2 small backfires on the way home. I wasn't able to talk to the tech. Has anyone else had this issue? Or have any idea what could cause for two injectors to fail simultaneously and without warning? Should I replace the other two? Any insight would be great, thanks!