a glowing manifold is waaaaay advanced, ur running super lean basically. actually your fuel just isnt burning all the way, then its flowing into the manifold and being burnt there. do some tuning, check your dizzy. ur prolly reaching full advance at 2000 rpms or so, getting crappy burn rate readings from the 02 sensor, not to mention conflicting signals from the other sensors, and ur computer cant compensate the timing accordingly. get that right or say bye bye to your exhaust valves.
this would also explain the over heating, as u are essentially flash boiling your coolant, and possibly creating more air pockets in the passages. get a new thermostat, check you timing, make sure its dead on (retard a few * if anything) then purge your coolant system.
hit back with results.
__________________
87 toyota 4x4 single cab short box pickup, 7MGZE.
|