So I have been getting bad gas milage in my civic. I was told to try STP fuel injector cleaner. My car drove fine, got to the gas station filled up my tank and put in the cleaner. I drove it for a little bit and now my car wont start. Its acting like its not getting any gas. Could something blocking it from getting enought fuel?

 

Do all four spark plugs have bright white spark?

Does the fuel pump prime?

Any CEL codes?

 

I changed the pump. No Codes. I didn't check the spark plugs for a white spark, but I'm sure its time to replace them. I just thought it was odd that right after I put the injector cleaner in it stopped running.

 

Doing the troubleshooting I mentioned would be pretty easy.

The first thing that comes to mind is that the cleaner loosened gunk in the gas tank that clogged the filter. But doing basic no-start troubleshooting should guide you to the problem without guessing.

 

Thank you for your help.