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Oct 7, 2009 | 12:27 AM

#16

conger

Posting Guru

Joined: May 2006

Posts: 1,028

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From: Edmonton, AB.

Quote:

Originally Posted by themetalmaster

Took it to the dealership yesterday, got a call today and they said injectors 5,6,7,8 are bad.
Do they all go bad together at the same time?
they checked the FICM first, and said it was good.
Can the injectors cause it to be hard to start, but as soon as it warms up it runs fine?

The 6.0's are really sensitive as to what oil goes in them. Cheap oil or the wrong grade will cause injector troubles. That's not to say that your not doing your maintenance correctly, so please don't take that the wrong way....But if you bought the truck used as many of us do. How did the last guy treat it? Did he do his maintenance or just drive it hard until he was done with it and trade it off. If you haven't checked out the 6.0 tech folder yet....It's good reading.

Oct 7, 2009 | 06:53 AM

#17

bismic

Fleet Owner

Joined: Nov 2003

Posts: 27,922

Likes: 3,639

Quote:

Originally Posted by themetalmaster

These injectors are the back two on each side of the engine. It is possible that low fuel pressure damaged these four injectors first. The 6.0L injectors are VERY sensitive to low fuel pressure.

Have you ever:
run out of fuel?
found either of your fuel filters plugged when you changed them?
got a tank of bad fuel?
go past 15k miles before changing the fuel filters?

Also - you should only use Motorcraft, Racor, or International fuel filters. The others may let water through, deform, or blind off early, etc.

Oct 9, 2009 | 10:13 PM

#18

themetalmaster

Thread Starter

Freshman User

Joined: Dec 2006

Posts: 32

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From: South Jordan, Ut

4 New injectors #5,6,7,8 a flash update and everything is fine but my butt!

Oct 9, 2009 | 11:06 PM

#19

bismic

Fleet Owner

Joined: Nov 2003

Posts: 27,922

Likes: 3,639

Quote:

Originally Posted by bismic

Many people have over 133k on their original injectors. There might be a cause for these failures .... that could still be there.

Oct 9, 2009 | 11:39 PM

#20

themetalmaster

Thread Starter

Freshman User

Joined: Dec 2006

Posts: 32

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From: South Jordan, Ut

Thanks everyone, especially bismic & npccpartsman.

May your trucks run strong and long!

Oct 10, 2009 | 05:57 AM

#21

npccpartsman

Hotshot

Joined: Dec 2003

Posts: 15,369

Likes: 121

From: Stuttgart, Ar

Quote:

Originally Posted by themetalmaster

4 New injectors #5,6,7,8 a flash update and everything is fine but my butt!

Did you have them check the fuel pressure while it was there?? I'd be really interested/concerned what it is because of all your back injectors failing.

Oct 10, 2009 | 06:23 PM

#22

conger

Posting Guru

Joined: May 2006

Posts: 1,028

Likes: 0

From: Edmonton, AB.

Quote:

Originally Posted by themetalmaster

4 New injectors #5,6,7,8 a flash update and everything is fine but my butt!

I'd be interested in your your fuel pressure as well. Those injectors aren't cheap. I might be adding a fuel pressure gauge next summer. Too friggin cold out to do it now. npccpartsman & bismic, reps for both you guys. Great info.

Oct 10, 2009 | 09:50 PM

#23

TreeTech

Junior User

Joined: Mar 2007

Posts: 55

Likes: 0

FICM not Injectors

I had the run on 4 cyl symptons when cold for the last 6mo, i just new my injectors where going south at a 149k, until last Sat it would not run at all. I ruled out hpop and got a Brand New FICM off Ebay for $150 and the nice seller was a International Tech and took it to his work and flashed it for me.. Now my truck runs like it should Cold or not..
Big props to this guy for selling a New unit at a great deal and the free programming..