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Re: 7.3 powerstroke help [Re: bearcat2] #7244877
04/16/21 03:53 PM
04/16/21 03:53 PM
Joined: Jan 2019
Posts: 249
Southern Ohio
O
Ohiowoodchuck Offline
trapper
Ohiowoodchuck  Offline
trapper
O

Joined: Jan 2019
Posts: 249
Southern Ohio
The camshaft sensor causes a no start when hot and usually when they cool off they will start back up. Not a fan of the aftermarket ones. The seem to get interference from the windshield wipers and cause a stumble or die.I don’t think I ever got a cel on when the valve cover harness came unplugged. I very rarely ever got a cel when a injector went bad. It takes 30 minutes to have both valve covers off where you can see the plug and if it’s loose or not. Another problem could be the ipr valve but I would start with the valve cover harness. You have to unbolt them them to know.

Last edited by Ohiowoodchuck; 04/16/21 03:55 PM.

“If there must be trouble, let it be in my day, that my child may have peace.”
— Thomas Paine
Re: 7.3 powerstroke help [Re: cotton] #7244890
04/16/21 04:20 PM
04/16/21 04:20 PM
Joined: Dec 2006
Posts: 7,020
Piney va. soon be 19
cotton Offline OP
trapper
cotton  Offline OP
trapper

Joined: Dec 2006
Posts: 7,020
Piney va. soon be 19
should be able to get the driver's side cover off tomorrow. got to work on it a bit today and will get back after it tomorrow after turkey hunting/mushooming


John 3/16

ifin your gonna be dumb ya gotta be tough
Proud testosterone charged redneck
www.cotton45c.com
Re: 7.3 powerstroke help [Re: cotton] #7247045
04/19/21 04:31 PM
04/19/21 04:31 PM
Joined: Jan 2009
Posts: 3,069
Nebraska
Trapset Offline
trapper
Trapset  Offline
trapper

Joined: Jan 2009
Posts: 3,069
Nebraska
Any luck cotton?

Re: 7.3 powerstroke help [Re: cotton] #7247356
04/19/21 09:44 PM
04/19/21 09:44 PM
Joined: Dec 2006
Posts: 7,020
Piney va. soon be 19
cotton Offline OP
trapper
cotton  Offline OP
trapper

Joined: Dec 2006
Posts: 7,020
Piney va. soon be 19
been down a few days with the danged bad head aches, hope to get back to work on it tomorrow.
it wont start now so thinking is a fuel system booger


John 3/16

ifin your gonna be dumb ya gotta be tough
Proud testosterone charged redneck
www.cotton45c.com
Re: 7.3 powerstroke help [Re: cotton] #7252134
04/26/21 10:31 AM
04/26/21 10:31 AM
Joined: Feb 2021
Posts: 276
Wisconsin
M
Mad Scientist Offline
trapper
Mad Scientist  Offline
trapper
M

Joined: Feb 2021
Posts: 276
Wisconsin
Any updates?Curiosity killing me!!!

Re: 7.3 powerstroke help [Re: cotton] #7252319
04/26/21 06:10 PM
04/26/21 06:10 PM
Joined: Dec 2006
Posts: 7,020
Piney va. soon be 19
cotton Offline OP
trapper
cotton  Offline OP
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Joined: Dec 2006
Posts: 7,020
Piney va. soon be 19
Still fooling with it.
Tried to start it today, thinking maybe is air in fuel system. Will do more checking tomorrow.
Any know how to do the buzz test on the injectors?


John 3/16

ifin your gonna be dumb ya gotta be tough
Proud testosterone charged redneck
www.cotton45c.com
Re: 7.3 powerstroke help [Re: cotton] #7252334
04/26/21 06:42 PM
04/26/21 06:42 PM
Joined: Dec 2006
Posts: 9,704
Wy
Cattrax Offline
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Cattrax  Offline
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Joined: Dec 2006
Posts: 9,704
Wy
Originally Posted by cotton
Still fooling with it.
Tried to start it today, thinking maybe is air in fuel system. Will do more checking tomorrow.
Any know how to do the buzz test on the injectors?



Your high pressure oil pump ok Cotton? There is a sensor in there that will kill the engine and not let it start too.


"The democracy will cease to exist when you take away from those who are willing to work and give to those who would not."
-- Thomas Jefferson




Re: 7.3 powerstroke help [Re: Cattrax] #7252339
04/26/21 06:50 PM
04/26/21 06:50 PM
Joined: Dec 2006
Posts: 7,020
Piney va. soon be 19
cotton Offline OP
trapper
cotton  Offline OP
trapper

Joined: Dec 2006
Posts: 7,020
Piney va. soon be 19
Originally Posted by Cattrax
Originally Posted by cotton
Still fooling with it.
Tried to start it today, thinking maybe is air in fuel system. Will do more checking tomorrow.
Any know how to do the buzz test on the injectors?



Your high pressure oil pump ok Cotton? There is a sensor in there that will kill the engine and not let it start too.


I cycled fuel pump many times today, trying to get all the air out from putting a filter in it. It did start and ran really rough for a minute.


John 3/16

ifin your gonna be dumb ya gotta be tough
Proud testosterone charged redneck
www.cotton45c.com
Re: 7.3 powerstroke help [Re: cotton] #7252340
04/26/21 06:51 PM
04/26/21 06:51 PM
Joined: Dec 2006
Posts: 7,020
Piney va. soon be 19
cotton Offline OP
trapper
cotton  Offline OP
trapper

Joined: Dec 2006
Posts: 7,020
Piney va. soon be 19
Originally Posted by Cattrax
Originally Posted by cotton
Still fooling with it.
Tried to start it today, thinking maybe is air in fuel system. Will do more checking tomorrow.
Any know how to do the buzz test on the injectors?



Your high pressure oil pump ok Cotton? There is a sensor in there that will kill the engine and not let it start too.


I cycled fuel pump many times today, trying to get all the air out from putting a filter in it. It did start and ran really rough for a minute.


John 3/16

ifin your gonna be dumb ya gotta be tough
Proud testosterone charged redneck
www.cotton45c.com
Re: 7.3 powerstroke help [Re: Cattrax] #7252350
04/26/21 07:05 PM
04/26/21 07:05 PM
Joined: Feb 2021
Posts: 276
Wisconsin
M
Mad Scientist Offline
trapper
Mad Scientist  Offline
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M

Joined: Feb 2021
Posts: 276
Wisconsin
Originally Posted by Cattrax
Originally Posted by cotton
Still fooling with it.
Tried to start it today, thinking maybe is air in fuel system. Will do more checking tomorrow.
Any know how to do the buzz test on the injectors?



Your high pressure oil pump ok Cotton? There is a sensor in there that will kill the engine and not let it start too.

When my high pressure oil pump went bad the check engine came on.Cotton doesn’t have check engine light but never know.

Re: 7.3 powerstroke help [Re: cotton] #7252355
04/26/21 07:11 PM
04/26/21 07:11 PM
Joined: Dec 2006
Posts: 7,020
Piney va. soon be 19
cotton Offline OP
trapper
cotton  Offline OP
trapper

Joined: Dec 2006
Posts: 7,020
Piney va. soon be 19
I have learnt one thang for sure. Is alot goes into making a powerstroke stroke.


John 3/16

ifin your gonna be dumb ya gotta be tough
Proud testosterone charged redneck
www.cotton45c.com
Re: 7.3 powerstroke help [Re: cotton] #7252593
04/26/21 11:34 PM
04/26/21 11:34 PM
Joined: Jun 2018
Posts: 3,813
Beatrice, NE
L
loosegoose Offline
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loosegoose  Offline
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Joined: Jun 2018
Posts: 3,813
Beatrice, NE
Originally Posted by cotton
Still fooling with it.
Tried to start it today, thinking maybe is air in fuel system. Will do more checking tomorrow.
Any know how to do the buzz test on the injectors?

To do a buzz test you need a scan tool.

Re: 7.3 powerstroke help [Re: loosegoose] #7252696
04/27/21 07:12 AM
04/27/21 07:12 AM
Joined: Dec 2006
Posts: 7,020
Piney va. soon be 19
cotton Offline OP
trapper
cotton  Offline OP
trapper

Joined: Dec 2006
Posts: 7,020
Piney va. soon be 19
Originally Posted by loosegoose
Originally Posted by cotton
Still fooling with it.
Tried to start it today, thinking maybe is air in fuel system. Will do more checking tomorrow.
Any know how to do the buzz test on the injectors?

To do a buzz test you need a scan tool.


is what i figured, them scanners are too spendy..


John 3/16

ifin your gonna be dumb ya gotta be tough
Proud testosterone charged redneck
www.cotton45c.com
Re: 7.3 powerstroke help [Re: cotton] #7252751
04/27/21 08:41 AM
04/27/21 08:41 AM
Joined: Jan 2009
Posts: 3,069
Nebraska
Trapset Offline
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Trapset  Offline
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Posts: 3,069
Nebraska
"I cycled fuel pump many times today, trying to get all the air out from putting a filter in it. It did start and ran really rough for a minute."

So did the problem show up right after changing the fuel filter?

If so I would definitely check to make sure the filter gasket ring didnt roll or kink. Also check and make sure filter housing cap didnt cross thread or go on crooked.

Re: 7.3 powerstroke help [Re: Trapset] #7252955
04/27/21 02:47 PM
04/27/21 02:47 PM
Joined: Dec 2006
Posts: 7,020
Piney va. soon be 19
cotton Offline OP
trapper
cotton  Offline OP
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Posts: 7,020
Piney va. soon be 19
Originally Posted by Trapset
"I cycled fuel pump many times today, trying to get all the air out from putting a filter in it. It did start and ran really rough for a minute."

So did the problem show up right after changing the fuel filter?

If so I would definitely check to make sure the filter gasket ring didnt roll or kink. Also check and make sure filter housing cap didnt cross thread or go on crooked.


no it started running really rough on the 18 mile trip to town, i figured a filter couldn't hurt and put one on it at the parts store, things went down hill from that point on.
truck would start but man it was running dang rough and sounded like was gonna fly apart. shut it off and called a tow truck. after sitting in the driveway a few days tried starting and no joy. now will start but only runs a minute or less then dies.


John 3/16

ifin your gonna be dumb ya gotta be tough
Proud testosterone charged redneck
www.cotton45c.com
Re: 7.3 powerstroke help [Re: cotton] #7252992
04/27/21 03:32 PM
04/27/21 03:32 PM
Joined: Dec 2010
Posts: 3,589
central arkansas
T
the Blak Spot Offline
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the Blak Spot  Offline
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T

Joined: Dec 2010
Posts: 3,589
central arkansas
Junk in the gas tank?


the just shall live by faith

member FTA, NRA, SWARFTA, EAFT
1776 - the year we told a tyrant we weren't to be under a dictator
Caveat ater macula
Re: 7.3 powerstroke help [Re: Mad Scientist] #7253027
04/27/21 04:25 PM
04/27/21 04:25 PM
Joined: Dec 2006
Posts: 9,704
Wy
Cattrax Offline
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Cattrax  Offline
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Joined: Dec 2006
Posts: 9,704
Wy
Originally Posted by Mad Scientist

When my high pressure oil pump went bad the check engine came on.Cotton doesn’t have check engine light but never know.


We had one that it was an issue with the high pressure oil pump, and never would throw any codes, and finally had to take it in to figure it out, turned out it was the hpop.


"The democracy will cease to exist when you take away from those who are willing to work and give to those who would not."
-- Thomas Jefferson




Re: 7.3 powerstroke help [Re: cotton] #7253100
04/27/21 06:08 PM
04/27/21 06:08 PM
Joined: Dec 2006
Posts: 702
NW WI
schweg2 Offline
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schweg2  Offline
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Joined: Dec 2006
Posts: 702
NW WI
Look into the Forscan software, you can download it for free. Then get a obd adapter either Bluetooth or wired (Amazon)
This will allow you to do the “buzz” test.

Re: 7.3 powerstroke help [Re: cotton] #7253459
04/28/21 05:10 AM
04/28/21 05:10 AM
Joined: Dec 2006
Posts: 7,020
Piney va. soon be 19
cotton Offline OP
trapper
cotton  Offline OP
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Joined: Dec 2006
Posts: 7,020
Piney va. soon be 19
cycled the fuel pump 3 times and didn't try to crank it over prob 4 times yesterday and she did started and run late in the day!!
ran pretty rough tho.sounds like i got at lest one injector not working, going to try doing the same deal today and crank it over later. still got most of the intake plumbing off so can pull a valve cover off if need to.


John 3/16

ifin your gonna be dumb ya gotta be tough
Proud testosterone charged redneck
www.cotton45c.com
Re: 7.3 powerstroke help [Re: cotton] #7253473
04/28/21 06:15 AM
04/28/21 06:15 AM
Joined: Jan 2018
Posts: 1,049
Henry Co, IL
3
3togo Offline
trapper
3togo  Offline
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3

Joined: Jan 2018
Posts: 1,049
Henry Co, IL
I'm not a diesel mechanic but years ago at work we had big problems with the sales powerstroke truck dying unexpectedly. Turns out the low sulphur diesel while it sits in tanks can grow bacteria that eventually plugged the filter(s). If you fueled up at a station that has sold low sulphur diesel and never had the underground tanks pumped, cleaned, the fuel filtered an put back in the tank with a biocide added you my have picked up junk in YOUR fuel tank. Not saying that's the problem, but if it flows through a filter until it plugs shut it's already made it to the engine.

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