Difficulty cold starting

[pokesmot]

My grand am seems to have alot of trouble starting up. Ill have to crank it on and off for a few minutes while flooring the gas pedal before it actually starts up. sometimes it makes a loud pop too...

I dont think the engine is running as nicely as it should be and was wondering how I can diagnose / improve the way it runs?

I think there might be a fuel injector problem... the car stalls if i remove the connectors from fuel injectors 2 and 6. it slightly hesitates if i remove the connector form 4, and nothing happens if i remove 1, 3 or 5.

[rixGAphx]

Well, for an FI engine, you should NOT hold the gas pedal down when starting.
This was often effective for old carb'd engines, but they didn't have sensors to adjust the air-fuel ratio and spark timing.

Just press the pedal down, then let it up and turn the key to 'start'.

1. Your engine is a '93, so 13 years old, mebbe 200k miles, and I *assume* it's basically original with no major rebuild.
Just about anything is possible in terms of underlying problems.

2. I would do the relatively cheap 'major maintenance' before looking at the injectors themselves.
a. Tuneup: New plugs (ACDelco OEM platinums), WIRES (very important considering the vehicle's age), and distributor cap/rotor (if the 3.3 has this, I dunno).
b. A couple cans of name-brand off-the-shelf Fuel Injector Cleaner thru a couple tanks af gas per can directions.
c. New fuel filter, new PCV valve, and check/replace the air filter.
d. Check and repair/replace all vacuum lines.

3. As in ALL problems with a GA, check/clean/tighten/repair/replace the battery cable terminals at both ends of both cables.
GA's are very sensitive to variations in voltage and amperage, with weird results if everything isn't in excellent shape.

4. Get a $30 tranny filter/fluid change.

5. The 3.3, which is becoming a rare beast, is the only V-6 from which you can disconnect/reconnect the injectors while the engine is in running trim. You can't get to them under the upper intake manifold on the 3.1 or 3.4.
So, few people, including me, have had the opportunity to understand the ramifications of disconnecting the injectors as you have done.
All I can say is, "Yeah, that seems weird."

Your problem may indeed be injectors.
But, since they cost ~$60 EACH for rebuilt replacements, you would do well to do the cheaper recommended service before such an investment in a very old car with Blue Book value of about $1200.

Good luck.
-Rick

PS: You have the old OBD-I operating system, which is pretty dumb and simple.
I take it the 'Check Engine' light isn't 'on' or flashing, so the computer doesn't have any stored codes to investigate.
But then, it wouldn't if the problem were plugs, injectors, or many other items.