2003 GT been sitting for years
2003 GT been sitting for years
I've got a 2003 GT that has been sitting for years. What do I need to replace to start it. I have heard the fuel system on these cars are pretty finicky and I need to replace the tank, injectors, fuel pump, etc. Is all this necessary? If I sound clueless, I am with the ins and outs of the modular motor engines.
Any advice is appreciated.
Any advice is appreciated.
Last edited by lonchair; Jul 20, 2013 at 09:07 PM.
Battery of course.
Clean the throttle body, and ensure the Mass Air Sensor is clean.
Replace the fuel filter. Take the old gas out of the tank. Put good gas in it, and also a bottle of Techron. Replace the oil and filter, perhaps drain the coolant and for now, put in just water for initial start up.
Remove each spark plug and pour ONE teaspoon of oil into the cylinder, and then LET IT SIT OVERNIGHT. Some say you might want to manually turn the crankshaft over a couple of times too.
The next day, you'll want to disable the fuel pump, trunk switch, just unplug it, or pull the fuse. Now crank the motor over a couple of times, say, about 4 seconds worth. Enable the fuel pump.
Now you start it. Unless the rings have screwed up the cylinder walls, it should crank right on up. That's what that teaspoon of oil is for, hopefully, to wick it's way around the top ring. It's also what the Techron is for, to get the injectors to hopefully unclog enough to get her running.
Hopefully it's running. Now you do seafoam in the intake, but be careful.
Take it to get the injectors cleaned, the coolant replaced, and the oil changed. Enjoy your Mustang.
---
I had my '66 Mustang I-6 200 sitting around for 2.5 years while I was restomodding her, and she didn't start in any of that time. I did all that right there what applied and she was just fine, ran her around for another 2-3 years before I finally sold her.
But that doesn't mean all will be well with this... but it's the best way to try, IMO. It's what I was told to do and it worked for me.
/And yes, I was an idiot for selling her. I regret that every day, just about.
Clean the throttle body, and ensure the Mass Air Sensor is clean.
Replace the fuel filter. Take the old gas out of the tank. Put good gas in it, and also a bottle of Techron. Replace the oil and filter, perhaps drain the coolant and for now, put in just water for initial start up.
Remove each spark plug and pour ONE teaspoon of oil into the cylinder, and then LET IT SIT OVERNIGHT. Some say you might want to manually turn the crankshaft over a couple of times too.
The next day, you'll want to disable the fuel pump, trunk switch, just unplug it, or pull the fuse. Now crank the motor over a couple of times, say, about 4 seconds worth. Enable the fuel pump.
Now you start it. Unless the rings have screwed up the cylinder walls, it should crank right on up. That's what that teaspoon of oil is for, hopefully, to wick it's way around the top ring. It's also what the Techron is for, to get the injectors to hopefully unclog enough to get her running.
Hopefully it's running. Now you do seafoam in the intake, but be careful.
Take it to get the injectors cleaned, the coolant replaced, and the oil changed. Enjoy your Mustang.

---
I had my '66 Mustang I-6 200 sitting around for 2.5 years while I was restomodding her, and she didn't start in any of that time. I did all that right there what applied and she was just fine, ran her around for another 2-3 years before I finally sold her.
But that doesn't mean all will be well with this... but it's the best way to try, IMO. It's what I was told to do and it worked for me.
/And yes, I was an idiot for selling her. I regret that every day, just about.
Last edited by houtex; Jul 20, 2013 at 09:44 PM.
Figured I would update. Gitting the car up and running turned out pretty easy. New gas tank, fuel filter, and fuel pump was all that was needed. Had a dealer do a top end engine clean and change all fluids. The car runs like it was brand new, and considering I just rolled 7K miles, it is brand new.
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