Ford Ranger Forum - Forums for Ford Ranger enthusiasts!

Go Back   Ford Ranger Forum - Forums for Ford Ranger enthusiasts! > >
Forgot Password? Join Us!

Welcome to Ford Ranger Forum

Reply
 
Thread Tools Search this Thread

  #1  
Old 06-30-2014, 05:32 PM
John moore John moore is offline
Learning to use the forums
 
Join Date: Feb 2011
Posts: 5
Default Rough starting(fuel pressure??) once cranks, runs smoothe

98 2.5L just had head replaced, it sat for about 5 months.
when cranking I can hear fuel pump kick on then off as normal, it will turn over and over, after 3-4 times of trying it will spit and sputter for a few seconds and then run fine.
I had just a little gas in tank, put 5 gallons fresh in it when at shop, then put 100% gas (no ethanol) in..full tank with seafoam and marvel mystery oil. I have 80 miles on it with fresh gas and still hard to crank. I can try to crank in less than 30 minutes and it fires right up..what gives?? help
__________________
98 2.5L 2wd 5spd std cab
Reply With Quote
  #2  
Old 06-30-2014, 05:35 PM
djfllmn djfllmn is offline
ford dealer parts guy
 
Join Date: Apr 2011
Posts: 20,770
Send a message via AIM to djfllmn
Default Re: Rough starting(fuel pressure??) once cranks, runs smoothe

sounds like the check valve in the pump is weak allowing the pressure to bleed off..does the problem go away if you cycle the key a few times before starting?
__________________
2016 F150 Supercrew XLT 5.0
1968 Ford Thunderbird Tudor 429 Thunderjet V8

(Click for Project Log)

traded-2007 F150 XLT Supercab 5.4
Sold:03 Sonic Blue FX4 Steppie 4.0SOHC 5spd
ranger free since 6/15/2012

Quote:
Originally Posted by Logan03CO View Post
These threads make me feel better about myself....
Quote:
Originally Posted by guell View Post
Welcome to the internet, if this is your first visit to it I suggest you stock up on a lot of preparation h cause you gonna be butt hurt a lot
Reply With Quote
  #3  
Old 06-30-2014, 05:42 PM
John moore John moore is offline
Learning to use the forums
 
Join Date: Feb 2011
Posts: 5
Default Re: Rough starting(fuel pressure??) once cranks, runs smoothe

it is easier to crank when cycling the key back and forth a few times, minimal sputtering then.
__________________
98 2.5L 2wd 5spd std cab
Reply With Quote
  #4  
Old 06-30-2014, 05:42 PM
djfllmn djfllmn is offline
ford dealer parts guy
 
Join Date: Apr 2011
Posts: 20,770
Send a message via AIM to djfllmn
Default

Yea sounds like a bad check valve
__________________
2016 F150 Supercrew XLT 5.0
1968 Ford Thunderbird Tudor 429 Thunderjet V8

(Click for Project Log)

traded-2007 F150 XLT Supercab 5.4
Sold:03 Sonic Blue FX4 Steppie 4.0SOHC 5spd
ranger free since 6/15/2012

Quote:
Originally Posted by Logan03CO View Post
These threads make me feel better about myself....
Quote:
Originally Posted by guell View Post
Welcome to the internet, if this is your first visit to it I suggest you stock up on a lot of preparation h cause you gonna be butt hurt a lot
Reply With Quote
Reply

Tags
2.5l, hard crank, rough idle, sputters

Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Rough idle and low fuel pressure. ceckad 3.0 Vulcan Tech 25 01-20-2014 03:59 PM
Low fuel pressure on start/ intermittent starting TXjames General Tech 3 01-24-2013 10:33 AM
90 ranger 2.9L Loses oil pressure and runs rough dksob81 2.9 Liter Tech 1 04-15-2011 08:09 AM
replaced fuel pump, still runs rough. HELP! jawden 4-Cylinder Tech 1 10-06-2010 09:56 PM
Truck starting rough still after new fuel filter and pump...? drewglenn04 4.0 SOHC / 4.0 OHV Tech 22 09-20-2010 08:03 PM