I have a '87 XJ6 that was sitting for 6 month, had a relative pull it out of storage to get it running. I usually put fuel stabilizer in before I store it for winter, but this did not happen this time. It ran with the gas in it but rough so my cousin added seafoam and topped it off with fresh gas which improved the idle a lot. After a day it start to idle very rough and is difficult to keep running. Looking for ideas. Could fuel cleaner have added to a clogged filter? Have on on the way just not installed yet. Concerned the injectors became partial clogged. Very difficult to start now, sputters and doesn't want to rev. If I manage to get the revs up it runs ok. Sorry for being long winded.

Pulled the filter and replaced. since I posted. Between the smell and brownish color decided fed to drain the tanks and flush them. Refilled with new gas. Now I can get it running but need to give it a lot of gas otherwise at idle it stumbles and eventually dies.