so i just bought an 88' 305 tpi. Car was running great until a couple days ago when i filled up the tank. As soon as i started the car i could feel the differece in the motor. it is idiling around 750 if that right i dont know. Plugs seem fine car is getting gas but smells like its running to rich.? ?

 

Any error codes? Since you've checked plugs, did you also check wires, cap, and rotor? Is the 750 RPM idle in gear or neutral?

 

in gear and out of gear. got codes 32 33 and 35 thinking its the MAP sensor. Where is that stupid thing located on the motor?????

 

88 TPI were not MAP equiped. They have a MAF on the intake ducting right before the throttle body.