Okay, my 1995 Honda Civic DV 1.5L non-vtec sat for 8 months while I was trying to figure out how to get the blasted thing going. Which I finally did. After a month of driving it, I get a check engine light code 43...which is, "fuel supply system".

I live in Los Angeles and the temperatures over the past 8 months that the car was sitting was an average of 90 degrees and my car sat in parking garage that was never cold. After I got my car re-started, I added some fuel cleaner to the gas tank. Upon next fuel up, I added a whole engine system fuel cleaner for good measure.

Let me give you facts pertaining to my car...
Fuel filter replaced 3,400 miles ago
Fuel pump and fuel pump strainer replaced 1,300 miles ago
Oxygen sensor replaced 1,300 miles ago
Oil filter and oil replaced 1,300 miles ago

I have NOT replaced the fuel injectors (4 of them) in the last 150,000 miles. This is my only guess as to what could be throwing the check engine light for a code 43 "fuel supply system". Should I clean them, replace them? Any other suggestions of what might be throwing this check engine light. Yes, I know that letting my fuel sit for 8 months is probably not the greatest thing to do. And "no" I did not drain it from my car...it all past through my engine already.

 

This thread may help...

https://honda-tech.com/forums/acura-integra-6/code-43-problem-2994674/

Might want to check your fuel pressure. Could be a bad regulator, and mentioned in the thread...

 

Use the code with the Helms manual to follow the troubleshooting flowchart.