crossfire questions please
Thread Starter
Drifting
Joined: Oct 2005
Posts: 1,918
Likes: 51
From: Angier nc
crossfire questions please
A friend has an 84 vette that sits more than anything.The battery went dead.He charged it up and tried to start it.It will fire over but not idle.When he tries to give it gas to keep it running it backfires.
I know NOTHING about the crossfire setup and am asking for some ideas I can relay to him to try and resolve the issue.IT ran well before the battery discharged.
Thanks.
I know NOTHING about the crossfire setup and am asking for some ideas I can relay to him to try and resolve the issue.IT ran well before the battery discharged.
Thanks.
Racer
Joined: Oct 2011
Posts: 312
Likes: 0
From: state of insanity
84 crossfire
FIRST QUICK EASY CHECK IS TO REMOVE AIR CLEANER SO YOU CAN SEE THE THROTTLE BODIES AND INJECTORS. WITH A TIMING LITE LOOK AT THE INJECTORS. THE FLASH OF THE TIMING LITE WILL SHOW THE FUEL SPRAY OUT OF THE INJECTORS. IT SHOULD BE EVEN, MISTY, AND CONE SHAPED SPRAY. IF SPRAY IS UNEVEN OR SPITTING, CHECK FUEL PRESSURE IF I REMEMBER RIGHT IT SHOULD BE LIKE 9 OR 10 LBS. CHECK YOU MANUAL TO BE SURE. GOOD PLACE TO START GOOD LUCK
Melting Slicks
Joined: Jan 2005
Posts: 2,658
Likes: 4
From: Clifton Park NY
The crossfire is the same as any other SB. I always get a kick out of, well because its CFI its different. No..not really.
Anyways, fuel pressure should be between 9-13 psi.
Go back to the basics first. Spark and Fuel
Check your fuel pressure first. If you have good pressure then move on to timing,etc.
Anyways, fuel pressure should be between 9-13 psi.
Go back to the basics first. Spark and Fuel
Check your fuel pressure first. If you have good pressure then move on to timing,etc.
Last edited by qws; Dec 15, 2011 at 01:18 PM.
Race Director
Joined: Apr 2003
Posts: 17,700
Likes: 1,667
From: moraga ca
I would make sure the battery has a full charge. If it was fully discharged, it might have been recharged just enough to start the car but not enough to make the ecm happy. The battery could also be on it's last leg. It ran fine before the dead battery. That is the only thing that has changed.
