Hot start problem. No start but crank??

[mypontiac]

I have a TTA w/ 13,500 miles. When the car gets hot it will crank, but not start. If I add a shot of carb cleaner to the vacuum line it will start right up.

I am planning on adding a 7th injector with a toggle switch to add a shot of fuel.

I have had the car at 2 mechanics who have checked grounds, ECM, Fuel, crank sensor, cam sensor, etc.

Any suggestion would be appreciated.

No TTA gurus in Louisiana.

 

[stevemon]

Sounds like a fuel delivery problem. Have you connected a gage to the rail & verified what the pressure is? Stock regulator should show 43-44psi running with the vacume line off.
It also may be the injectors are varnished up considering the low use your car has seen.
Disagree on the need for a 7th injector though. Why do you think you need it? Better to upgrade if you've outgrown what you have unless you can custom burn your chips. Off the shelf chips don't work so well with 7th injectors.

 

[vetttta]

Did you ever find out what the problem was.