I just got a 1983 Z28 with crossfire injection and I need help. I cant take off from a complete stop without the motor bogging way down. It also happens anytime I am rolling and give the car alot of gas. Please help I dont know where to start.

 

Probably leaning way out or running pig rich

 

I would build a TPS tester pigtail and use a multimeter. Key on engine off the voltage when you move the throttle at TB should be showing smoth transitions in V's.

Another possibility is fuel pump failure. It should hold 12-13 lbs under load. One way of testing is to add a T and duct tape gauge to side or front window and have passager witness if it maintains FP under load.

 

Check for vacuum leaks... if it's the stock engine, the rubber lines must be worn out or have tiny holes and need to be replaced. It could be a fuel problem. Check for fuel pressure. It need to read about 12 PSI for the engine to run well. You could have more detailed instructions by getting your hands on a 1983 Camaro Shop Manual.

Take a look at the injectors on the TBI's to see if they are flowing strong and correctly.

The fuel pump might be weak and replacing it with one for the TPI would give it even more and better pressure. Be careful while replacing the fuel pump. It's better to have not too much gas in the tank. Look up how to do, in case you have to.

These are one of the most common problems these engines get with the age and lack of knowledge and maintenance. I would start with the easy things first and see how the engine reacts.

Check this link below, this company does know how to make the CFI work like a champ.

http://www.crossfireinjection.net/index.htm

 

I have never used or owned a fuel pressure tester, where would I find one?

 

It's not that difficult. Maybe at an Auto Parts Store or google it, and you will find a few

 

I'm with Fireblood, check for vacuum leaks first. The intake's top lid bolts are notorious for loosening and creating a massive leak. Go around the top of the intake and tighten every bolt you see, even the TB bolts.

 

Free loaner at Auto Zone. I think they let you keep it for two weeks. You put down deposit equal to its value.

 

Here's the one I have.

Simply disconnect supply line, connect fitting between the two. Connect gauge. Read value.

http://www.amazon.com/gp/aw/d/B0006V...&robot_redir=1

 

I tried that tester. It did not work. I had to buy a bunch of fittings to fit where the fuel filter is.
I had the exact same issues and it was the fuel pump. I had 5PSI of pressure. When I dropped the tank I found a hole in the rubber line that mounts the pump to the fuel line. I believe it degraded due to the ethanol content of today's fuels.
I took the opportunity to upgrade to a TPI pump and bump up fuel pressure by making the regulator adjustable. Runs much better now.