Cross-Fire Help
Thread Starter
Intermediate
Joined: Mar 2010
Posts: 48
Likes: 0
From: Palm Bay Florida
Cross-Fire Help
I have an 84 with the cross fire and am wondering how the injectors should be when it starts. I finally got it so that the fuel pump runs the way it should. Now the rear Injector pulses fuel. The front one does not. Is this correct for starting? I would think both should shoot fuel. I have had the injectors out and cleaned them and replaced everything gasket and 0-rings. I also know they both work because I can jumper a ground to them and make them shoot continuously if I want to. I am thinking it is a ground issue to the front injector? 
Intermediate
Joined: Jun 2006
Posts: 44
Likes: 1
From: Bristol VA
I've got the same car and its not been on the road for about 15 years. I had it running about 6 months ago but I let it sit too long again and I can't get it started. Should I be able to hear the fuel pump running when I turn the key on?
Thanks for your help
Bryan
Thanks for your help
Bryan
Instructor
Joined: Jul 2009
Posts: 201
Likes: 0
From: Orland Hills ILLINOIS
I have and 84 crossfire myself. Nice spray pattern from both and no drips when starting either. Thats how it should be. Make sure you put those injectors back in exactly how you removed them. They are not to be swapped. There is one for the front and one for the back and not interchangeable.
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Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
You should hear the pump run for a couple seconds, when you turn the key on.
You can verify if you throw a gauge on it. If it's not priming, then you will see extended crank time, as the pump won't run until you build oil pressure, and activate the secondary fuel pump circuit.
My CFI car cold, would start with about 3 seconds of crank time. Warm, it was always runnning by the time the starter gear hit the flywheel.
You can verify if you throw a gauge on it. If it's not priming, then you will see extended crank time, as the pump won't run until you build oil pressure, and activate the secondary fuel pump circuit.
My CFI car cold, would start with about 3 seconds of crank time. Warm, it was always runnning by the time the starter gear hit the flywheel.
Intermediate
Joined: Jun 2006
Posts: 44
Likes: 1
From: Bristol VA
I must definitely have a bad fuel pump or connection. I have no spray coming from the injectors after repeated cranks. At least one of the injectors are new and the other one has been cleaned. I've just let it sit too long. Its still waiting its turn on a restore.