91 firebird 3.1 , bad gas and starts to run like shit after 10 mins

[FireB91]

ok I know i have bad gas but the thing runs good for the first 10 mins and then starts to sputter and skip cylinders, What the hell could be causing this, I been told temp sencor and overheating but running for 10 mins ideling will not overheat it. Also should I change my fule filter after I get the gas clear, and should i get the fule filters that go right on the lines in the engien bay? thanks

[Nate Dog 69]

Change the factory fuel filter after all that trash gas is gone. Go ahead & throw on some new plugs while you're at it. GO ahead & give it a touch Sea Foam too ;)

[thx_one]

I had a very similar problem in my 1992 Camaro RS 3.1L. Start small with the fixes and see if it helps, if not change the O2 sensor if that dosent fix it, I hate to say it but if you have the "Digital EGR" on the passenger side of the engine, replace it. This is what fixed my car. Its about $170 at Advance auto but I paid $50 for a used one at a junk yard from a 3.4L Camaro-same EGR, same plug and it worked. My car is a 1992 RS Heritage Edition with a 5-speed and a 3.1L. Hope this helps.