I've recently bought a 1982 vette with the crossfire fuel injection engine. 53K original miles. Very Nice...to look at.

I won't even go into how unimpressed with its preformance I am. what do I expect from a car with a speedometer that goes to 85?.

I let the car sit for a month. Now the engine just spins over and it will not crank. I took the breather cover off and poured a little gas in the throttle bodies. It started right up and ran long enough to use that fuel up.

Fuel pump?
clogged injectors?

Oh yeah.. the tank is nearly full of gas.

Any help I will be apreciated.

Jim

 

It sounds like you are on the right track. Possible clogged fuel line also.

Good Luck

 

Check.
1..the two TBI fuses in the fusebox marked Inj #1 & #2 and are 3amp fuses.

With the ignition on,can you hear the fuel pump working?
If not
2..Check the fuel pump relay.Which is behind the ECM, in the battery tray. The relay is about 2" square in size. Make sure it's not just a lose connection on the relay and try tapping it with a screw driver and see if that helps.

3..Disconnect the battery for a few minutes to reset the computer.

Also the 82 has an oil pressure sensor at the back of the inlet manifold(it has 3 wires attached to it) if this is faulty it shuts down the fuel pump,you might want to check this aswell.

 

Dell Boy,

Thank you for responding to my question.

When I get home from work I will start down your list of ideas.

I did turn the key on without starting the engine. I don't think I could hear a fuel pump activate. Not being familiar with a vette, I was not sure if that was typical or not.

I don't think I have ever encountered a clogged fuel line. I take it that this thing must have a steel tank that could rust and clog the lines? It ran fine (but slow) before it sat for a month.

 

There is a fuse in the rear compartments near the battery, check that, ive had that shut off my fuel pump when I had the crossfire. When you turn the key, you will be able to hear the fuel pump prime, it will be a high pitch humming noise that lasts about 1.5 seconds. Have fun with it, I personally hated the crossfire and replaced it with a 383.

P.S. '82's were not built for performance, more for gas mileage cruising.

 

I recently had the same situation as you have with my 82 collectors edition. It has 135,000 miles. The problem was the pump. Very easy to replace. Remove the gas door and rubber boot and you will see the pump/sending unit. Remove 6 screws, 3 hose clamps disconnect the wire connector and it comes right out. The car runs great now.
I replaced the complete unit because my fuel gauge wasn't working and still isn't. That's another story. I believe just the pump is available. Good luck

 

If you need to replace the pump,its better to use one from an 85 model.
Much better pump and fits with no mods.

 

Thats odd. Mines sits. Never a problem. Check the fuse for the Fuel pump...10 amp to right on the panel. Any evidence of mice?

As soon as you turn the key to on you should hear a buzz from behind you. It lasts for about 2 seconds.

Its going to be something simple.

Jim

 

bang on the gas tank with your fist, chances are it will start. It has worked many times for me.

 

bang on the gas tank with your fist, chances are it will start. It has worked many times for me.

WOW!! Glad I don't have a computer in mine!!

 

belive it or not it does work, Just about every chevy that comes into work that needs a fuel pump I have gotten to start and drive it onto the lift by banging on the gas tank.

 

and don't let that 85 mph speedo get you down, mine clicks at 85 half the time im driving it If you need you can buy a 160 speedo from like ecklers i think....

 

The 82 is a cruiser with only 200 hp stock. You want a fast vette then buy on ethat has been modified or that is 71 or older or 93 and newer.

I would bet your fuel pump is shot or your fuel filter needs to be replaced. My car would not start after sitting for a couple of weeks. Replaced the fuel pump about a 45 min project. bang runs great now. I would drain the tank and clean it out with a sponge while you have the sending unit out. Oh and I used an 82 fuel pump not an 85. An 85 fuel pump could put too much pressure on old fuel lines.

 

Check with the Crossfire Vault forum: http://www.crossfire.homeip.net/ They are all about 82/84 Corvette Crossfires. Most of the people that hate Crossfire Injection just do not know how to work on them; these are very unique motors and require some special knowledge which you will NOT find at a dealership or most any vette shop.
For my 82, we replaced the fuel pump with one from an 85-87 - this took care of the bogging down and sputtering at high RPM. Also rebuilt the TB's and bushed the throttle shafts. If you have any up/down side to side movement in the shafts, then you have a vacuum leak which reeks major havoc for our motors - needs bushings! The stock fuel pump will only put out 12 psi new; GM says 9 to 12 is good but is NOT, the cfi needs 14psi to run correctly which you will more than get from an 85-87 pump.
So, rebuilt/bushed TB's, 85-87 FP and the TB's correctly balanced has made my 82CFI a pleasure to drive and own!
If you want more HP from this year, you'd have to go with the 383 and x-ram mods.
Check out the site!
Good Luck!

 

Everything being equal...One of the key's to getting the CFI motors to run well is with better fuel pressure like Phill has stated. The minimum pressure that we have found that works best on a stock CF motor or slightly modded is 14psi. Anything less and the motor doesn't perform at its peak...PERIOD! You must know what your FP is set to or you're cheating yourself.

If your using a stock pump 82 or 84 and you can not achieve 14psi, your running the motor lean and losing power, remember there is only 200hp stock anyway. I wouldn't worry about the fuel lines bursting using that 85 pump either. There is very little rubber line on an 82 around the tank and that can be easily replaced when you do the pump change, the rest is all steel line going forward.

Another BIG issue with the CF is the TBs leaking at the shafts (vacuum leak) this makes the car run rather rough, stumbles, high idle and erratic idle. Worse case is that the throttle plates will stick in the venturi when the shafts wear really bad because of the side play. With 53k on your motor, I'm willing to bet that yours are worn and leaking, but has nothing to do with a no start issue. Balancing the TBs is another issue and needs to be done correctly.

You could have a corrosion issue with the fuse box, check it out carefully, pull each fuse and inspect/clean/lube and replace. A somewhat common issue with C3s is that the T-top will leak or the top windshield trim piece and if it does the water will run across the top of the windshield and to either sides A-pillars and down to the inside of the car and the fuse box area. The best fix for that is to fix the top and seal the A-pillars at the top as well. If anyone has ever wondered where the water on their carpet is coming from and it doesn't appear to be coming from the T-top...check those A-pillars.

Sorry about that, got a little off track. All-in-all, the CFI will run well if maintained and adjusted correctly and they are very reliable believe it or not. Hope you get it running well soon and see you on the CFI forum that Phill mentioned.

 

I really appreciate you help.

Now I finally have time to go out and try some of these fixes.

I'll tell you how it goes.

Thanks again,

Jim Tomasik

 

it took me longer to walk out to the car than it did to fix it.

The first thing I did was turn the key on and heard no pump sounds.

I opened the battery box and saw the fuse (key still on) and wiggled it.

Heard the sound come on.

cranked the engine.

Ok since ya'll are so good... I've got this 94 Lincoln mark viii that needs the engine replaced. ha! forget it! you have to take the engine out of the bottom of the car to do it right. Already did it once and then within 2 weeks blew it up playing. I'm 44, I should know better.

Till next time.

Jim Tomasik