New engine wont restart

Tiny
EVORIS
  • MEMBER
  • FORD RANGER
Replaced the engine in a 2000 ranger 3.0 flex fuel. The engine started immediately. I let it run for about 15 minutes until the gauge read a normal operating temp. I then shut it down to finish tightening the exhaust bolts. Now it wont start. I have switched out the coil, installed new plugs prior to installing the engine, have fuel to the rail, have spark, ensured all connectors and the ground are secure, and have a new fuel filter. I bled the air out of the fuel system at the valve on the rail. The engine turns over great, just wont start. Also checked fuses. What else can I check? This is a used engine with 40K miles.
Wednesday, April 11th, 2007 AT 7:20 AM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
You can have fuel in the rail but does it have the correct fuel pressure. Get the fuel system squared away before you get to the ignition.

Remember fuel comes before ignition
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Wednesday, April 11th, 2007 AT 7:29 AM
Tiny
EVORIS
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Replaced the engine in a 2000 ranger 3.0 flex fuel. The engine started immediately. I let it run for about 15 minutes until the gauge read a normal operating temp. I then shut it down to finish tightening the exhaust bolts. Now it wont start. I have switched out the coil, installed new plugs prior to installing the engine, have fuel to the rail, have spark, ensured all connectors and the ground are secure, and have a new fuel filter. I bled the air out of the fuel system at the valve on the rail. The engine turns over great, just wont start. Also checked fuses. What else can I check? This is a used engine with 40K miles.

48 lbs fuel pressure with key on. However it falls off very quickly.58 lbs when engine is cranking. Neighbor added a few drops of fuel to intake and the engine tried to fire. Seems like fuel problem to me too. There is 13 volts at the injectors.

The kid at the parts store said that the valves got fried since we ran it without the pipes tight. Seems like a stretch to me.

This is making me nuts. Thanks for the help!
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Thursday, April 12th, 2007 AT 9:49 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
On EFI-equipped engines, fuel pressure in the line does not necessarily mean the fuel is being injected into the engine. Listen for clicking or buzzing that would indicate the injectors are working. No noise? Check for voltage and ground at the injectors. A defective ECM may not be driving the injectors, or the EFI power supply relay may have called it quits. Some EFI-systems rely on input from the camshaft position sensor to generate the injector pulses. Loss of this signal could prevent the system from functioning.

Next agenda will be Valve timing/Compression

Good Luck-don't go wacko it ain't over till I play ( You keep me hanging on) by Vanilla Fudge.
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Thursday, April 12th, 2007 AT 4:25 PM

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