will the air fuel ratio effect how hot my motor runs? after much trouble shooting, part changing and system flushing i cant get my car to run under 230 -240 degrees range and heats up to 260ish before it starts to cool down. it has a 160 degree t-stat in it. does the fact that the motor has a wapping total of 3.5 hours of total run time effect anything? my air fuel is way off and the car runs really rich! i have an aluminum radiator and electric fan on the way but i dont think it will solve my problem. it will definatly help though!
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1988 gt
306 with forged pistons, brodix 5.0R aluminum heads, comp cams pro magnum roller rockers, edelbrock victor jr intake, holley 650 double pumper, comp cam, msd 6al box, msd distibuter, msd coil, msd plug wires, bbk pullies, bbk long tubes and catless x-pipe, flowmaster american thunder exhaust, frpp alum driveshaft, eibach pro launch kit,
lakewood 70/30 struts, lakewod 50/50 shocks
2006 v6 coupe
shelby spoiler
S&B CAI
Screamin Demon coil
If the air/fuel ratio is off, then yes the engine can run hot. I don't think that 160 stat helps either. It's way too cold... it basically stays open the whole time the engine is running and the water doesn't have time to be cooled because it's in constant circulation. It needs to stay in the radiator to get enough airflow across it.
What do you mean it has 3.5 hours of run time? Is this a new engine? If it's a newly rebuilt engine, get the tune right before you hit the panic button, this is typical for a new engine. I'm also guessing the water pump is new?
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What about fans? If they're electric, are they coming on? If it's a crank driven, is it spinning the correct direction?
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yes. it is a brand new engine and brand new water pump. right now i still have the factory fan on it and it and the pump are spinning in the right direction. i tuned it the best i could with the big carb on it and cant get the tune right cause it runs really rich with the carb leaned out as far as i can get it to. what about it being a new engine makes it want to run that hot?
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1988 gt
306 with forged pistons, brodix 5.0R aluminum heads, comp cams pro magnum roller rockers, edelbrock victor jr intake, holley 650 double pumper, comp cam, msd 6al box, msd distibuter, msd coil, msd plug wires, bbk pullies, bbk long tubes and catless x-pipe, flowmaster american thunder exhaust, frpp alum driveshaft, eibach pro launch kit,
lakewood 70/30 struts, lakewod 50/50 shocks
2006 v6 coupe
shelby spoiler
S&B CAI
Screamin Demon coil
Last edited by bosox579; 09-03-2007 at 11:33 AM.
Reason: to provide more information
yes. it is a brand new engine and brand new water pump. right now i still have the factory fan on it and it and the pump are spinning in the right direction. i tuned it the best i could with the big carb on it and cant get the tune right cause it runs really rich with the carb leaned out as far as i can get it to. what about it being a new engine makes it want to run that hot?
i dont think it has anything to do with simply being a new engine as it does, when you have a new engine, you have a dry cooling system, and its possible you didnt get all the air trapped out of it. Also if its carbed, it will run hot with an initial lean mixture, and with over advanced or retarded timing.
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i would make sure the timing is correct (not too advanced), and you have no vacuum leaks first off. If this fails, then make sure you flush all of the air pockets out of the cooling system.
also, the adjustments on the carb are for idle mixture only, and usually if it runs too lean it can overheat, not too rich. i would recommend re jetting the main jets in the carb for better performance.
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1987 ford mustang lx 5.0. fully tricked suspenion, srut tower, swaybars and subframe, centerline 17" wheels, aluminum driveline full msd tuneup with 6a control box and crane cms coil. ported intake and tb, jba headers and dual flo's, underdive pullies, k&n intake. soon to have gt40 longblock w/custom built clutch....
i dont think it has anything to do with simply being a new engine as it does, when you have a new engine, you have a dry cooling system, and its possible you didnt get all the air trapped out of it. Also if its carbed, it will run hot with an initial lean mixture, and with over advanced or retarded timing.
i cant get the car to run lean till i replace the carb. i have the idel screw just about all the way out and its still running mad rich. i also have the timing set at 10 deg advanced because of the big cam and i need it the to creat enough vaccume. cant hurt flush it again to eliminate dry spots. do you think thats too much of a timing advance?
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1988 gt
306 with forged pistons, brodix 5.0R aluminum heads, comp cams pro magnum roller rockers, edelbrock victor jr intake, holley 650 double pumper, comp cam, msd 6al box, msd distibuter, msd coil, msd plug wires, bbk pullies, bbk long tubes and catless x-pipe, flowmaster american thunder exhaust, frpp alum driveshaft, eibach pro launch kit,
lakewood 70/30 struts, lakewod 50/50 shocks
2006 v6 coupe
shelby spoiler
S&B CAI
Screamin Demon coil
running extremly hot! 
