1988 ford ranger wont run correctly

[dorricott27]

So I've posted earlier in the week my truck wouldnt start so I replaced fuel pump fuel filter and fuel pressure regulator my high pressure fuel pump runs fine and im holding great pressure at the rail I also have great spark and compression my fuel injectors are shooting fine but it still wouldnt start so I pulled the whole exhaust system and she fired right up I drove her around for about a mile or 2 was working great no problems then out of no where when I gave it gas it would bog so hard and wouldnt go anywhere then eventually died out I got it home but barely so I dont know what the problem could be she fires right up and idols great I just need some help or ideas thanks

 

[GentleRF]

Sounds like the low pressure fuel pump in the fuel tank. This of course presumes the high pressure pump is on the frame.

 

[97RangerXLT]

Dude! Punctuation would help..


Sounds like it might have a clogged fuel filter or weak fuel pump. from your description it is bogging down and not running well under load, so maybe the pump is putting out pressure at idle, but as you hit the foot feed the pump might not be able to maintain that pressure while the engine is running under load due to restrictions in the fuel lines (clogged filter) or weak pump..

injectors are shooting fine, define "fine" arre they spraying with good force and even distribution of fuel in the spray cone?

Another one to look at is a worn engine, but you said the compression is good, so I would rule that out.

Leaning toward fuel filter being clogged or bad fuel pump.

Replace the filter and see what happens. Its cheap

AJ

 

[97RangerXLT]

If it is the fuel filter, your tank might be shedding a bunch of sediment/ rust and clogging it, (looking back at your post I see that you replaced it)

AJ

 

[dorricott27]

I just replaced the fuel pump with a brand new one also a brand new fuel filter I left the old high pressure fuel pump on the rail in because it sounded like it was working fine so maybe ill change that out and see what happens .... my injectors are spraying great with good pressure

 

[dorricott27]

Also I cleaned the gas tank before putting in new fuel pump so there is very little residue if any at all