Originally Posted by
kutza
fi= fuel injection
Its on my 92 4cyl rodeo, 2600cc, w/ fan/clutch fan cooling.
the truck used to overheat while at idel or in traffic, usually after 45min of use on any condition of driving. With new h20 pump, and stat.
Well its been sitting for over 2yrs now, I thought it maybe a bad head gasket or even a cracked head.
Today I started it, fixed a bunch of vac leaks, and put Redline water wetter in it. let it idle for 1hr45min, and no boil-over like before. ( I know water wetter isnt that good).
I am going to pul the head off this week and get it all chked out too.
I WAS JUST OVER THINKING, and thought that unmetered air would cause, overheating due to unequal amounts of fuel not being added to the combustion chamer. ( I over thought the entire thing), it got tto be a bad gaset or head, but there are no signs of them being bad.
BTW, I was on the 97 NCSU A&T Baja SAE team.
Unmetered air would cause stuff like poor fuel consumption, and poor perfomance and maybe hesitation. Over heating usually can be traced back to thermostat or a possible blockage. Maybe a hole in the rad or air getting into the system.
Example, I had a stock 93 240 with that stop leak raditor stuff in it. I dumped the Anti-freeze and flushed the system. Replaced the thermostat and it worked till the raditor connection piece broke and dumped the water into the engine bay and on the ground. I replaced the rad and all was normal.
Start simple. then go for the big stuff. If the head gasket is toast your not gonna save your self any more money by going straight for the head. Since it' been sitting that stuff should be replaced anyways.