Re: 1950 Packard 288 Auto overheating HELP

Posted by Mike On 2011/2/15 13:06:13

I'm curious about the fuel mixture at idle. Running lean could cause temp to climb fast, but on the freeway you're not really using the idle circuit, so it could avoid it unless you're idling.

Quick way to test the theory, start it, let it run at about 1/2 throttle instead of idle and see if it stays cool. Would narrow it down some to something that happens only at idle (water not flowing fast enough or idle circuit maybe.)