Fuel problem

I have a 1994 chevy 1500 pickup. pickup cranks but does not start no power to fuel pump or fuel fuse or the injectors but have power to fuel relay. put new fuel fuse new fuel relay new fuel filter new fuel pump did anybody have this problem please help THANKS

Have you got good hot blue spark to all plugs?
Does it do the 2 second prime up when key is turned on?
On no power to injectors do you mean no 12 volts to them or they do justnot squirt fuel.
Have you checked all fuses?
What engine and engine code?

Have you got good hot blue spark to all plugs?
Does it do the 2 second prime up when key is turned on?
On no power to injectors do you mean no 12 volts to them or they do justnot squirt fuel.
Have you checked all fuses?
What engine and engine code? checked all fuses no 12 volt to injectors 350 engine pour gas in garb it starts for few second then turns off

checked all fuses no 12 volt to injectors 350 engine pour gas in garb it starts for few second then turns off

Look for the fuse and check for 12 volts on both sides key on.
MT

Fuse no 4 a 10 AMP FUSE label inj a.

And check wiring to injectors for short where the air filter adapter goes onto TBI.

Fuse no 4 a 10 AMP FUSE label inj a.

And check wiring to injectors for short where the air filter adapter goes onto TBI. I'm going to check the injector fuse and check the for a short. It's raining so I have to wait I'll get back soon

I'm going to check the injector fuse and check the for a short. It's raining so I have to wait I'll get back soon Rain stop I check injector fuse and is good must us made a mistake I have power to injectors and to fuel pump but not to fuel fuse going to give it complete tuneup then get back to you THANKS

Rain stop I check injector fuse and is good must us made a mistake I have power to injectors and to fuel pump but not to fuel fuse going to give it complete tuneup then get back to you THANKS

Does the fuel pump 2 second prime up key on ?
Does the fuel pump run on engine crank?
Got fuel pressure?
The fuel pump is inline with fuel pump.
Only has voltage whe the pump is running.
MT

Does the fuel pump 2 second prime up key on ?
Does the fuel pump run on engine crank?
Got fuel pressure?
The fuel pump is inline with fuel pump.
Only has voltage whe the pump is running.
MT I've written twice but it not going threw I'll try again question #1 no #2 no #3 no #4 dont know what that means #5 with key on pump has power but I dont here it no gas going to carb still no power to fuse with key on

First thing do you have good spark to all spark plugs with engine cranking?

What size engine and what engine code ?

Check at fuel pump relay.
Do you have 12 volts to the orange wire to relay with key on?

Does the gray wire to fuel pump from relay have 12 volts on it with engine cranking or for 2 seconds after key is turned on?

If not take a fused jumper wire and hook it up to battery positive/hot side and to the gray wire to fuel pump.
Does the fuel pump run when jumped?

The fuel pump inline fuse will only have 12 volts going threw it when the fuel pump gray wire has 12 volts from relay.
It is not a key on powered fuse only a inline with voltage to run threw it to feed fuel pump.

First thing do you have good spark to all spark plugs with engine cranking?

What size engine and what engine code ?

Check at fuel pump relay.
Do you have 12 volts to the orange wire to relay with key on?

Does the gray wire to fuel pump from relay have 12 volts on it with engine cranking or for 2 seconds after key is turned on?

If not take a fused jumper wire and hook it up to battery positive/hot side and to the gray wire to fuel pump.
Does the fuel pump run when jumped?

The fuel pump inline fuse will only have 12 volts going threw it when the fuel pump gray wire has 12 volts from relay.
It is not a key on powered fuse only a inline with voltage to run threw it to feed fuel pump. sorry didn't get back food poisoning o.k.350 engine yes I have 12 volt to orange wire from relay gray wire does not have 12 volt has power but very little I'm going to jump gray wire but my battery went dead going to get new one. yesterday put new sparkplugs new dist and roader it needed it get back soon

Have you got good spark to all plugs?

Have you got good spark to all plugs? Jump gray wire at the conection that comes from fuel relay to fuel pump under master cylinder now have 12 volt to gray wire to fuel pump and fuel fuse but fuel pump does not go on no gas to garb

Do not forget to check for spark toall plugs and let us know about spark.
No spark will give you a no fuel pump run.

The gray wire will only have 12 volts on it with key on 2 second prime or engine cranking.

If you jumpered the gray fuel pump wire and fuel pump does not run.
Make sure pump is getting a good ground and fuel pump plugin wire is good.
With 12 volts on gray fuel pump wire and good ground and fuel pump wire plugin is good and no pump running or fuel pressure.
Time for a new fuel pump.
Always go with a AC-delco/Delphi fuel pump.
Good luck
MT
And let us know how it goes.

Do not forget to check for spark toall plugs and let us know about spark.
No spark will give you a no fuel pump run.

The gray wire will only have 12 volts on it with key on 2 second prime or engine cranking.

If you jumpered the gray fuel pump wire and fuel pump does not run.
Make sure pump is getting a good ground and fuel pump plugin wire is good.
With 12 volts on gray fuel pump wire and good ground and fuel pump wire plugin is good and no pump running or fuel pressure.
Time for a new fuel pump.
Always go with a AC-delco/Delphi fuel pump.
Good luck
MT
And let us know how it goes. when its going bad its get worse I cant see if the sparkplugs has power because when I try to start the engine the engine keeps cranking while I have the key in my hand have to find if its starter relay or starter solenold that keep starter cranking while you have switch on off do you know where relay is

when its going bad its get worse I cant see if the sparkplugs has power because when I try to start the engine the engine keeps cranking while I have the key in my hand have to find if its starter relay or starter solenold that keep starter cranking while you have switch on off do you know where relay is

if you have 12volts to fuel pump and you have no fuel pump turning on , you must check the ground connections for fuel pump/frame ground point....it is possible when replacing pump that they fell off/broke off...

if you can get engine to start with dumping gas into the intake manifold it has to be fuel problem...


if the starter continues to run without key in crank position , the starter appears to be damaged. the starter solenoid contacts must be welded together,,,don't crank for more than 10 sec. then wait 3 minutes to crank again...

No relay.
Solenoid is on starter.
Purple wire is start wire.
You might be able to jump starter at start fuse.
MT

No relay.
Solenoid is on starter.
Purple wire is start wire.
You might be able to jump starter at start fuse.
MT got the truck running it was the ground wire on top of the tank my friend never told me it came off when installing new fuel pump THANKS for everything I follow everything you said and we got it going. truck runs great with all the new parts I put in.It needed it anyway THANKS again I hope I can help someone like you help me.

You are welcome and thanks for posting back how it went and what you found.
That may help someone else with that problem.
Glad all is well and running.
Good luck
MT

got the truck running it was the ground wire on top of the tank my friend never told me it came off when installing new fuel pump THANKS for everything I follow everything you said and we got it going. truck runs great with all the new parts I put in.It needed it anyway THANKS again I hope I can help someone like you help me.

your not the first guy to miss the ground wire thats why i mentioned it....usually when checking for power few check ground/return for proper bond...to frame...