Hello All,

I'm looking for some direction on my truck 1993 Ranger 4L. Seem like every morning when I go to start the truck it would start and stall the first couple times, by the third crank over it starts and seems to be ok for the day. I've just done a tune up and replaced the fuel filter. I'm thinking I'm losing pressure somehow but not sure where. 🤔 Any advice would be appreciated on my trouble shooting process.

Thanks 😊

 

What was your tune up ?

 

Prior to the tune up this was happening. I changed plugs, wires, coil, air filter, fuel filter, PCV.

 

Cycle key on and off 3 times then try to start
This primes the fuel system 2 seconds each time key was turned to on, you get 10psi fuel pressure each time

If engine seems to start better then yes, you are losing fuel pressure when vehicle sits long enough
If you don't smell gasoline, and MPG is not in the toilet, then its most likely losing pressure in the gas tank, at the fuel pump

Fuel pumps have a built in "check valve", basically just a flap that is pushed open when pump is on and then closes, and is held closed by back pressure, but they can leak over time
Not sure replacing the fuel pump for this issue would be worthwhile

Maybe try cycling key just once and see if that is all it needs

 

Hello, I tried what you mentioned about cycling the fuel pump, cycled it 3 times with the same issue as it started and stalled. I have to start the engine 3 times to get it running. I've ordered a new sending unit hopefully it will resolve the issue.

Thanks for your help!

 

So not a fuel pressure issue

After Cold starts does it idle high, Choke Mode, and then idle slowly drops as engine warms up?

 

After the third time of turning the engine over and it starts the idle is high 2500-3000rpm. Then after 30 seconds it gets down to 800-1000rpm.

 

I was also considering changing the idle control valve, but figured the fuel pump first...