when the engine is ideling its runs rich according to my guage then when i acellerate its ok but when i criuse it runs very lean and seems to be missing or bogging. If i nail it it will realy bog and sometimes backfire then it will take off and run rich. If im cruising than take my foot off the gas it runs very rich again.
what should i check its a holley 670 street avenger and was ok for a while and just started to do this recently. Thanks.