Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/5/84; site t4test.UUCP Path: utzoo!decvax!decwrl!sun!idi!t4test!kuhl From: kuhl@t4test.UUCP (Brain Kuhl) Newsgroups: net.auto Subject: pinging on 90 octane gas Message-ID: <1323@t4test.UUCP> Date: Fri, 1-Feb-85 19:44:39 EST Article-I.D.: t4test.1323 Posted: Fri Feb 1 19:44:39 1985 Date-Received: Mon, 4-Feb-85 23:40:49 EST Distribution: na Organization: Intel Peripheral Comp Mfg, Santa Clara Lines: 18 Does anyone out there know why a 305 chevy engine pings on 90 octane unleaded gas?It started after I gave it a tune-up & rebuilt the carb.People tell me that it is running to lean but I have not changed the jets.Could the float level be causing this? OTHER INFO: pinging at the lower RPM's same heat range plugs I think(no cross reference). they were BOSCH now CHAMPION. timing is set to speks. Does anybody out there know the cure for this disturbing problem? please reply Brian