So on another thread from a while back someone said that the pre-90's camaros have a 7th injector. Is this true?
Also, what size should I get for my Camaro?
I know they are not bad, but I'm redoing the fuel system because the car was sitting for 2 years and I figure it deserves it. Lol.

Oh, and how hard is it to replace the fuel pump?

 

The 7th injector is a cold start injector located on the back side of the intake. it just adds a bit of extra fuel on first start up. the stock replacement size for a 2.8 is 15lb/hr if i remember right.

The fuel pump isnt the funnest thing in the world. you have to drop the exhaust and some of the suspension to move the axle out of the way. Or some have cut an access panel in the rear to get to the pump w/o dropping it. try a search for it, its been covered a lot.

 

Probably a little late, but, I wouldn't worry about the CSI (7th injector). First, it only is used for a few minutes at most at startup, and second, the thing is CRAZY expensive (more expensive than a full set of the other six). Yes, the fuel injector size is roughly 15#.

As for the fuel pump, if the car has been sitting for that long, you may be in for a real fight if the car was sitting outside. Those suspension bolts aren't easy to get out in the first place, and they're even worse if they've been exposed to rust for 2 years. The fuel pump may or may not be the worst of your worries, however. If you live where there is nasty winter weather, the fuel and brake lines under the car may have rust damage. Inspect carefully.

 

I wasn't really worried about the 7th injetor, just the 6. The car the other day was acting up a little bit fuel wise, Sputtered a bit. I havent figurd out if i want to do the pump, or injectors. But it sputtered only atinyyyy bit. But im thinking that it was just the last of the 2 year old gas in it. Havent decided yet. Im going to drive it around soon and see if it does it again. I live in the desert, very dry, very hot.

Still amazes me that the car sat for two years, has not been started till i started it first try. Did the throttle body collant warmer bypass thing, because it was leaking bad there. Did full sea foam treatment, and coolant flush x2 and new oil. Brand new spark plugs, icm, dizzy cap, dizzy and wires. Runs almost perfectly. Just that little sputter. Kind of worried me a little bit.

 

Hate to say it, but either take the car to a dealer or Pep Boys for a Fuel System cleaning OR remove the 6 fuel injectors and send them out to be cleaned. After 2 years, the inlet screens and the outlet holes are probably gummed up. Or you may have a fuel injector that's shorted out. If there is a problem with the injectors that causes a bad spray pattern, there isn't the amount of fuel needed in the cylinder(s) affected by the bad injector. Also check the fuel pressure, the color of the spark AND for bad vacuum hoses/lines (tend to disintegrate into a black powder when touched if they are bad) and measure the manifold vacuum.

 

Fuel pumps last thing I'd recommend trying. Excpect to cut/replace bolts for like sway bar. Good time to refresh rear end suspension it had the money to do all together if do fuel pump.

 

I just did the rear and front sepension in mine (about 3 months ago), these bolts are a pain, and I'm redoing the entire fuel system. make sure you look at your lines. changing the fuel pump/ droping the tank you almost have to pull the rear end out, pulling it out I left the axel attached to the car, putting it back in I had the axel out of the car. it took me about twice as long to get it out as it did putting it back in. just some food for thought