neeed help
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Freshman User
Joined: Nov 2010
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neeed help
1989 ford f superduty 7.3 diesel
the check fuel filter light came on so i just replaced the filter i unscrewed the old one filled it with diesel installed it now truck wont start run acts like its not getting fuel took feed line to to filter louse turned engine over fuel came out so the pumt to filter is okay line frome filter to injection pump is clear fuel flowing what could be causing my proablum how do i check to see if the injector pump is cloged and if so how do i unclog it
thanks for reading this and any ideas
Fleet Owner
Joined: Jul 2006
Posts: 20,378
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From: Mi'kma'ki
just let your diesel rated electric fuel pump prime the system........if you haven't done that upgrade,get out the battery charger.
remember to crank for a max of 15 seconds with a wait period of at least 2 minutes between attempts so as not to burn up that pricey high torque diesel starter.
she'll fire off...................................eventually.
tip for next time;
bring the engine up to operating temp prior to changing the filter.fill it with diesel additive/atf (caution red dye!)/diesel fuel.
this way your not fighting a cold block and lose of prime at the same time,and she'll take right off for ya easier.......at least a little.
remember to crank for a max of 15 seconds with a wait period of at least 2 minutes between attempts so as not to burn up that pricey high torque diesel starter.
she'll fire off...................................eventually.
tip for next time;
bring the engine up to operating temp prior to changing the filter.fill it with diesel additive/atf (caution red dye!)/diesel fuel.
this way your not fighting a cold block and lose of prime at the same time,and she'll take right off for ya easier.......at least a little.
Fleet Mechanic
Joined: Jan 2011
Posts: 1,709
Likes: 4
From: 8600 ft in Colo
Most likely just air got in between the filter & the IP. If so, you just have to keep cranking it. Put a battery charger on it, and be careful not to cook the starter.
Crank for 10 seconds, let it cool for a minute, repeat as necessary...
It can take a while. Pop a cool one and keep going...
Phy
Crank for 10 seconds, let it cool for a minute, repeat as necessary...
It can take a while. Pop a cool one and keep going...
Phy
Senior User
Joined: Jun 2010
Posts: 406
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From: NW Ga
Press the gas pedal all the way to the floor while your cranking. It will crank a lot faster that way. Just be ready to take your foot of the pedal the second it starts to crank.
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Elder User
Joined: Nov 2009
Posts: 793
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Why not crack an injector line and bleed the air out.When i do this it only takes about 5 seconds of cranking
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Freshman User
Joined: Nov 2010
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thanks for info had mechanic friend take a look he said that the mechanical fuel pump was not working pumping gas he took the fuel filter feed line louse and turned the engine over no gas came out so i removed the pump to insepct it when i pushed the pump plunger fuel was pumped out so i thinck the pump is good i will reinstall the fuel pump and give it a shot any tricks to getting the pump back in
Post Fiend
Joined: Oct 2008
Posts: 8,513
Likes: 2
From: concord ca
u cant prime the hole system with just a epump u have to crank the motor to move the plunger in the ip to get the fuel to the injectors man i have been on a roll today
Logistics Pro
Joined: Sep 2010
Posts: 4,411
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From: Victor, MT
haha joe. Well I am saying this. I cranked my buddy's 7.3 for a minute straight w.o hurting the starter none. It was a motorcraft from 1997. His was a 1991 7.3 F250. Like they all said. Im x5 on just letting her crank (granted it takes a while and when you are not old enough to drink its nerve racking).
Fleet Owner
Joined: Jul 2006
Posts: 20,378
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From: Mi'kma'ki
just because the starter still works after over heating them like that for 30 seconds or more at a time,doesn't mean you didn't do damage.
im sure both of you guys have replaced starters in the past.
remember how much faster she spun after putting a new one in?
an engine could still run fine if you didn't change the oil until 20k miles too.but does that mean it doesn't ware out sooner than if you changed it every recommended 3-5k miles?
..........gotcha rethinking i hope.
im sure both of you guys have replaced starters in the past.
remember how much faster she spun after putting a new one in?
an engine could still run fine if you didn't change the oil until 20k miles too.but does that mean it doesn't ware out sooner than if you changed it every recommended 3-5k miles?
..........gotcha rethinking i hope.
Logistics Pro
Joined: Sep 2010
Posts: 4,411
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From: Victor, MT
I said that because he still has the same starter on his truck. I replaced my starter because it was a POS that I found out only costs 35 dollars...I replaced with a motorcraft and now it will crank all day long(figureativly speaking)