Discussion Starter · #1 ·
Three weeks ago I replaced the water pump and thermostat. a couple of weeks ago I developed a bad air leak in the front tank fuel line ( the back line has had a leak for a month or so). I replaced the fuel line then discovered that the stock fuel pump was leaking air so bypassed it with an electric one. there is no more air getting into the line but for some reason it overheats. there is no bubbling in the coolant or coolant in the oil so I really don't think there is a head problem. when I pump on the priming bulb to add a little more pressure it seems to make the thing run cooler. can under-fueling cause overheating? all cylinders are firing as far as I can tell is there really that much cooling effect from the fuel? has anyone run into this problem before?