My 67 Mustang with a 200 CID six, will not idle when it is warm. The story started when I backed it out of the garage, and noticed clear liquid on the garage floor. It was gas. I looked underneath the car , and gas was dripping from the fuel pump.
I replaced the fuel pump with a Airtex brand from the local auto parts store. That is when it started not idling when the engine is warm, and the choke is fully open, It starts great when it is cold, and the choke is closed. It goes to fast idle and runs smooth. I did some research, and some people have had problems with Airtex fuel pumps. I ordered a fuel pump made by Carter. People seem to have had good luck with this pump. The new fuel pump did not change anything.
The engine ran great before the fuel pump was changed. I replaced the fuel filter, that did not do anything, I cannot find a vacuum leak.
It has a Autolite 1100 carb that has been rebuilt by Pony Carbs 2 years ago. It has not had any problems before this
I have to adjust the idle screw to max just to keep the engine running. It surges rpm's up and down. The mixture screw has little effect. If you put it in drive, it dies.
If I manually move the choke toward the closed position, the engine rpm increases. It is 76 degrees outside, and the engine is warm. Shouldn't the choke be fully open? The temp gage shows about 1/4 in the warm area. Should I adjust the choke? It ran great all summer, and fall.
Any ideas?
Thanks
I replaced the fuel pump with a Airtex brand from the local auto parts store. That is when it started not idling when the engine is warm, and the choke is fully open, It starts great when it is cold, and the choke is closed. It goes to fast idle and runs smooth. I did some research, and some people have had problems with Airtex fuel pumps. I ordered a fuel pump made by Carter. People seem to have had good luck with this pump. The new fuel pump did not change anything.
The engine ran great before the fuel pump was changed. I replaced the fuel filter, that did not do anything, I cannot find a vacuum leak.
It has a Autolite 1100 carb that has been rebuilt by Pony Carbs 2 years ago. It has not had any problems before this
I have to adjust the idle screw to max just to keep the engine running. It surges rpm's up and down. The mixture screw has little effect. If you put it in drive, it dies.
If I manually move the choke toward the closed position, the engine rpm increases. It is 76 degrees outside, and the engine is warm. Shouldn't the choke be fully open? The temp gage shows about 1/4 in the warm area. Should I adjust the choke? It ran great all summer, and fall.
Any ideas?
Thanks