|
Thu Oct 16 16:50 EST 2014
The car will start with the application of starting fluid and run.I am unable to get the fittings loose for the fuel rail hoses, but have checked the Schrader valve and there is no fuel or pressure coming out.
• NO FUEL AT SCHRADER
Thu Oct 16 20:11 EST 2014
Fuel pump is running, I disconnected the outlet from the fuel filter(engine side) and the fuel is flowing through the filter.
• PUMP RUNNING VERIFIED IN ANY WAY?
• I SUSPECT THIS FUEL IS FROM THE (so-called) PRIME WHEN CRANKING CYCLES.
Fri Oct 17 14:36 EST 2014
Had wife crank the car and I can hear the fuel injectors ticking away. Tested the fuel delivery after the fuel filter,got a good soaking(again)
• AGAIN I SUSPECT THIS FUEL IS FROM REPEATED CRANKING. (undocumented pump relay circuit)
Fri Oct 17 14:53 EST 2014
No pressure of any kind at the Schrader. Fuel pump relay is new.
• ????
Sat Oct 18 13:39 EST 2014
Fuel getting to the rail but still not start. Any further thoughts?
• PROBABLY ACCUMULATED FROM "PRIME" CYCLES.
Sat Oct 18 16:35 EST 2014
Cant really say if fuel is actually making it to the rail because the Schrader valve is not leaking any fuel.
• SEE BELOW...
Sun Oct 19 18:22 EST 2014
I am assuming the schrader valve on the rail is like a regular tire stem fitting, If so I had my wife crank the car while I opened the valve and fuel came out.
Thought maybe it lost prime on pump replacement
• AGAIN, SO-CALLED PRIME CYCLES
• "LOST PRIME" doesn't happen
Tue Oct 21 13:23 EST
really starting to believe this is a fuel pressure problem,...
Got to thinking about the aftermarket fuel pump I was sold and it was not an exact fit although 3 parts houses confirmed it was the correct pump.(in tank) Any thoughts?
• ME TOO. SUGGEST FORCING PUMP TO RUN" AS A TEST. See below
• NEED PUMP DETAILS... SOURCE? BRAND? COST?
======================Fuel Pump Jumper Test===================
Start by making sure Fuse #11 is OK. It could get blown if the O2 sensor heater or wiring shorts to ground.
If #11 is good, remove it and use one of it's terminals to test the pump by making a jumper wire (see below) to apply +12V to the terminal that is farthest away from you, i.e., toward the engine.
•<==jumper (+12V)
F11
•
You can get +12V battery voltage from the Fuse 1 terminal that is closest to you, after the fuse is removed. Make a jumper wire with a flat male terminal on each end to route the voltage from F1 to F11.
•
F1
•<==jumper (+12V Source)
With the jumper in place you should be able to hear the pump run by listening at the fill pipe or maybe just with the trunk open if the area isn't too noisy.
===================================================
--
Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.
|
