Issues with injectors on 1984
Thread Starter
6th Gear
Joined: Nov 2018
Posts: 6
Likes: 0
Issues with injectors on 1984
I'm having issues with both my injectors on my 1984. Injector one just dribbles, I plan on replacing or rebuilding this injector. Injector two gives me a constant spray, even when you turn the key to on and it pumps for for two seconds it sprays. When I try to start it it starts right away but begins revving so I turn it off. No codes are given it only flashes 12. I have the factory service manual if someone wants to point me in a good direction to begin reading.
Team Owner
Joined: Jul 2004
Posts: 28,475
Likes: 3,291
From: Hartford WI
I'm having issues with both my injectors on my 1984. Injector one just dribbles, I plan on replacing or rebuilding this injector. Injector two gives me a constant spray, even when you turn the key to on and it pumps for for two seconds it sprays. When I try to start it it starts right away but begins revving so I turn it off. No codes are given it only flashes 12. I have the factory service manual if someone wants to point me in a good direction to begin reading.
He could test and clean the injectors and possibly get you new or maybe reconditioned ones if your injectors are too far gone
Melting Slicks
Joined: Mar 2012
Posts: 2,800
Likes: 456
From: USA
The 84 flashes 1-2 1-2 1-2 then any code and finishes with 1-2 1-2 1-2 IIRC I do not think you have a problem there.
The crossfire revving up on start up sounds to me like a major vacuum leak. These cars are known to have problems with vacuum leaks. The lid of the crossfire manifold is one place to check and the many vacuum hoses around the engine compartment. My current 84 also had a binding in the throttle linkage that would not let the throttle return to the idle.
The crossfire has two different injectors front and back. They are different part numbers so be sure and mark them when you take them out.
Good luck with your repair.
The crossfire revving up on start up sounds to me like a major vacuum leak. These cars are known to have problems with vacuum leaks. The lid of the crossfire manifold is one place to check and the many vacuum hoses around the engine compartment. My current 84 also had a binding in the throttle linkage that would not let the throttle return to the idle.
The crossfire has two different injectors front and back. They are different part numbers so be sure and mark them when you take them out.
Good luck with your repair.
Le Mans Master
Joined: Aug 2017
Posts: 6,943
Likes: 1,490
From: New Jersey
If you unplug the one that always sprays, does it still spray? This would eliminate an electrical short. In the case that it doesn't I would say repair or replace. Being new injectors for these aren't all to expensive I would probably just go with new ones. And yes, the front injector flows less than the rear one. The difference is about 1 lb/hr. It makes up for the loss of flow by being plumbed in series.
Thread Starter
6th Gear
Joined: Nov 2018
Posts: 6
Likes: 0
The 84 flashes 1-2 1-2 1-2 then any code and finishes with 1-2 1-2 1-2 IIRC I do not think you have a problem there.
The crossfire revving up on start up sounds to me like a major vacuum leak. These cars are known to have problems with vacuum leaks. The lid of the crossfire manifold is one place to check and the many vacuum hoses around the engine compartment. My current 84 also had a binding in the throttle linkage that would not let the throttle return to the idle.
The crossfire has two different injectors front and back. They are different part numbers so be sure and mark them when you take them out.
Good luck with your repair.
The crossfire revving up on start up sounds to me like a major vacuum leak. These cars are known to have problems with vacuum leaks. The lid of the crossfire manifold is one place to check and the many vacuum hoses around the engine compartment. My current 84 also had a binding in the throttle linkage that would not let the throttle return to the idle.
The crossfire has two different injectors front and back. They are different part numbers so be sure and mark them when you take them out.
Good luck with your repair.
If you unplug the one that always sprays, does it still spray? This would eliminate an electrical short. In the case that it doesn't I would say repair or replace. Being new injectors for these aren't all to expensive I would probably just go with new ones. And yes, the front injector flows less than the rear one. The difference is about 1 lb/hr. It makes up for the loss of flow by being plumbed in series.
I also found this connection not connected. I'm not sure where its supposed to connect to. It comes from a plastic globe shaped object behind what looks like the vapor canister.
[Img]http://imgur.com/gallery/Fsye1zw
https://imgur.com/gallery/Fsye1zw
[Img]httpshttps://i.imgur.com/cWpiKeK.jpg[/img]
Last edited by Waterloo the man; Jan 28, 2019 at 06:53 PM.
Thread Starter
6th Gear
Joined: Nov 2018
Posts: 6
Likes: 0
The 84 flashes 1-2 1-2 1-2 then any code and finishes with 1-2 1-2 1-2 IIRC I do not think you have a problem there.
The crossfire revving up on start up sounds to me like a major vacuum leak. These cars are known to have problems with vacuum leaks. The lid of the crossfire manifold is one place to check and the many vacuum hoses around the engine compartment. My current 84 also had a binding in the throttle linkage that would not let the throttle return to the idle.
The crossfire has two different injectors front and back. They are different part numbers so be sure and mark them when you take them out.
Good luck with your repair.
The crossfire revving up on start up sounds to me like a major vacuum leak. These cars are known to have problems with vacuum leaks. The lid of the crossfire manifold is one place to check and the many vacuum hoses around the engine compartment. My current 84 also had a binding in the throttle linkage that would not let the throttle return to the idle.
The crossfire has two different injectors front and back. They are different part numbers so be sure and mark them when you take them out.
Good luck with your repair.
My throttle cable was kinked. It looks like it was holding the injectors open about 20%ish.
If you unplug the one that always sprays, does it still spray? This would eliminate an electrical short. In the case that it doesn't I would say repair or replace. Being new injectors for these aren't all to expensive I would probably just go with new ones. And yes, the front injector flows less than the rear one. The difference is about 1 lb/hr. It makes up for the loss of flow by being plumbed in series.
I also found this connection unplugged. It goes to the globe shaped plastic in the front bumper behind what looks like the vapor canister.
Le Mans Master
Joined: Aug 2017
Posts: 6,943
Likes: 1,490
From: New Jersey
I'm sure this car has some vacuum leaks. I'll have to buy one of those smoke kits to look for it. Maybe that combined with it dumping fuel is causing it to accelerate. I might replace the intake manifold gasket while I have the injectors off.
My throttle cable was kinked. It looks like it was holding the injectors open about 20%ish.
I unplugged the one injector and it still sprayed. I assume that means The injector is messed up right? I just bought a rebuild kit, I night send it back and order injectors if they're cheap enough.
I also found this connection unplugged. It goes to the globe shaped plastic in the front bumper behind what looks like the vapor canister.
My throttle cable was kinked. It looks like it was holding the injectors open about 20%ish.
I unplugged the one injector and it still sprayed. I assume that means The injector is messed up right? I just bought a rebuild kit, I night send it back and order injectors if they're cheap enough.
I also found this connection unplugged. It goes to the globe shaped plastic in the front bumper behind what looks like the vapor canister.
also that appears to be the cruise control servo plug
