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Truck having start up problem

JOHNAWALSHIV

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May 1, 2021
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it all started before i had changed my fuel pump, my gas gage would jump up and down so i had changed the fuel pump
which on you tube showed cutting out a spot behind drivers seat a nine by nine opening and completed that task. gas gage started to work fine but
then when I started the truck it takes time to start up and wont kick over. call my friend and he said it sounds like a battery problem. so my battery that's
in my truck is a optima battery 34/78 so went to auto zone and bought a new battery with the same cca which is a 1000 cca on it. truck starts up good
for a day and started the same problem again, called my friend which is a mechanic and said it might be the fuel pump might be clogged and i stated to him
it sounds like a fuel filter clog or starter going bad most likely a fuel filter. "SO IF ANY ONE HAS ANY SUSGESTION PLEASE LET ME KNOW IM STUCK".
 

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What brand fuel pump did you install?

ACDelco OEM or other?

Aftermarket fuel pumps do not have the best track record.

Have you tested your fuel pressure?

You did not state your truck's model year, but assuming the truck in your profile picture is your truck, the fuel filter is part of the fuel pump.

If you have already "clogged" the fuel filter, you must have a ton of dirt in the fuel tank to already have "clogged" the fuel filter.

Somehow, I don't think this is a fuel filter problem.

How fast does the engine turn over when you try to start it?

If it turns over very slowly, you could possibly have a starter problem, especially since you stated you have a brand new battery.

Slow turn over has nothing to do with the fuel pump or filter.

I think we are going to need a little more information before anyone can venture a good guess.
 

ygmn

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What is fuel pressure at rail?
Any check engine light?
Check ground wires?
LAst maintenance? plugs, wires etc.
Any electrical modifications like alarm or radio or?

What exactly does it do?
engine turns over normal or not?
Does it ever sputter or never runs?

Hard to troubleshoot over the interent

REPLACING parts is not how you repair a vehicle....
trouble shoot to see what needs to be done....
 
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