elf024119
Member
- Joined
- February 23, 2011
- Messages
- 21
- Reaction score
- 0
- City, State
- Belton, South Carolina
- Year, Model & Trim Level
- 91 Navajo
yes the pump can draw on a empty line. I have completly replaced the line from the tank to the pump with 3/8 steel line. It has improved a bit but it still has a vapor lock condition after it gets hot. As long as the engine is cold the pressure @ the rail is 40 psi. Once it get's to op-temp the pressure drops to a steady 20 psi at idle then will drop off sharply as the throttle is applied. I shut the engine off and relieve the pressure at the guage and only vapor comes out very little liquid fuel. I leave it sit for about 20 min. and check the guage and have about 8 psi of pressure, relieve guage and no fuel just vapor.
I am the mechanic tring to figure this navajo out. I have had 87 Ranger with a 3.8L super-coupe, a supercharged 91 xlt 4.0L with the same fuel line, pump setup as the Navajo. And a 4.0L 87 bronco II, and a bone stock 94 xlt.
I am the mechanic tring to figure this navajo out. I have had 87 Ranger with a 3.8L super-coupe, a supercharged 91 xlt 4.0L with the same fuel line, pump setup as the Navajo. And a 4.0L 87 bronco II, and a bone stock 94 xlt.
