I have a 1991 Ford Ranger 3.0.

It is in good shape but has fuel issues. So far I have replaced the fuel pump, changed the oil, flushed the radiator, replaced the fuel filter, and replaced the starter.

After replacing all these parts the truck ran good. After letting it sit for about 2 weeks to get the title and insurance straight I went to crank it and it appears the truck isn't getting fuel. The fuel pump is working because I disconnected the fuel filter and fuel is pumping through the line. I can spray starter fluid into the upper manifold and it will fire. I was thinking it might be the fuel injectors are clogged or the line is clogged somewhere in between the fuel filter and the fuel injectors.

My biggest issue is that I am having trouble detaching the fuel lines. Any advice on how to detach the fuel line?

If the fuel injectors are clogged what is the best test to determine if they are and what is the best method to clean them?

Richard
91 Ford Ranger

 

Still looking for a little advice.

Thanks

 

I'm not exactly sure how to detach the lines on a 91. I'm guessing you need a tool to get some one them off.

 

any ideas on what I should troubleshoot. I can get the engine to fire for a sec if i spray starter fluid in the manifold. I looks like it isn't getting fuel.

Thanks

 

Have you checked the pressure at the rail?

 

no not yet. I need to go and purchase a gauge. What should the proper psi be?

 

I'm not sure. I believe its listed in a service manual. I'd look but I'm not at home.

 

thanks

I have the manual. I will check it out.

 

Got the fuel lines detached. What a pain! Make sure you get the right tool. I purchased the multi tool with different size openings. I works okay but would recommend a different tool because it takes two people to detach the line. Hoping that cleaning the fuel injectors will fix my problem.

Any ideas if this doesn't work?

Thanks

 

Removed and cleaned the fuel injectors. I had one that the tip was cracked so I replaced it. Hoping that was the reason why the truck didn't fire. But after putting everything back together the truck still wouldn't fire.

I detached the fuel line running into the fuel filter and tried to cut the ignition on to see if fuel is pumping through the lines. After hitting the ignition a couple times I noticed that no gas is pumping through the line.

So it appears that fuel pump is not working. Which is troubling because I replaced the fuel pump about three weeks ago. But one thing I have noticed for the last couple of weeks is that the battery is draining after I charge it up. I haven't driven but once in last couple weeks because i was getting the insurance straighten out.

Which leads me believe that maybe the fuel pump is burned out because it has been running the entire time that I had installed it and draining the battery.

Anybody got any other ideas??

Checking the fuel pump wednesday

 

Fuel relay sticking on may be burning it up.

 

Where is the fuel relay located?

 

still looking for help with the fuel relay location

Thanks

 

So impatient....jk

Its on the pas. side fender underneath the fuse block. Pull it up and there's 3 relays in a box together.