injector failure....again

rushingbc

rushingbc

< I drive slow trucks
Sep 3, 2006
139
0
0
Beaufort, SC
hey y'all, found the crankcase full of fuel this afternoon.... :(

I am going to pop the valve covers and run the truck to see if i can see any leaks, heard it works. thought about dying the fuel in the filter so try to locate the leak, does anybody have suggestions on what to use?

Any 'dont do this.....' or 'this will help it go smoother' suggestions? :eek:

Thanks
 
rushingbc

rushingbc

< I drive slow trucks
Sep 3, 2006
139
0
0
Beaufort, SC
no i havent checked balance rates yet, just saw the puddle and did a sniff check. i was on my way out the door for work when i saw the situation. i guess that would be a good clue huh? :rolleyes: im an idiot some times...... :D

mytmousemalibu, i guess the 'search' function would have helped too? :eek: i'll give it a read and go from there.

Thanks.
 
JOHNBOY

JOHNBOY

< Rocking the Big Single!
Aug 30, 2006
2,159
0
0
Saegertown, Pa
If you killed more than a couple injectors word to the wise. Replace the FICM when you replace the next ones. New return lines and seals are a good idea.
 
Turbo Buick 6

Turbo Buick 6

...
Jun 28, 2007
3,259
0
0
NE Pa
IIRC there is a theory that a bad FICM is what makes some injectors go bad and why some trucks go through 5 sets of them :confused: makes sence to me:baby:
 
JOHNBOY

JOHNBOY

< Rocking the Big Single!
Aug 30, 2006
2,159
0
0
Saegertown, Pa
^^^^^^ Ding Ding Ding. We have a winner!

It is my beleif that is your wiping out injectors on a steady pace something else is wrong. Something is killing them. It is not filtration. That has been beat to death. Stock trucks kill them, modded trucks kill them, but then there are guys like me that run stupid big pulse widths and have never had issues. The only thing left that makes sense is the FICM is burning them up. To back this thought remeber GM went to a lower voltage injector and FICM on the LLY.;)
 
mytmousemalibu

mytmousemalibu

Cut your ride, sissy!
Apr 12, 2008
2,230
0
0
Kansas
JOHNBOY.... All of mine that failed have been due to high psi fuel circut leaks into the oil

Still need an FICM or is this more for trucks seein injectors hang open/shut ?
 
rushingbc

rushingbc

< I drive slow trucks
Sep 3, 2006
139
0
0
Beaufort, SC
hmm, thats interesting. Chevy changed my FICM after my last round of cracked body injectors.

I think mine may be easier than an injector luckily. the oil level was rather normal, yet smelled like fuel, and i have fuel leaking out of the valve cover from the top of a connector tube. im still going to pull the valve cover to be safe, but i think my fix is closer than i originally expected. :nanawrench:
 
NelsonDiesel

NelsonDiesel

Formerly StewieTuned
May 8, 2008
896
0
0
41
Buena Park, CA
www.NelsonDiesel.com
i am sorry but i completely disagree witht he FICM "causing" them to go bad...

I pull injectors weekly... They are either cracked or they are packed full of rust and other contaminants. Voltage is an issue but to an extent.

Don't waste your money on an FICM - get the injectors replaced and move along....
 
rushingbc

rushingbc

< I drive slow trucks
Sep 3, 2006
139
0
0
Beaufort, SC
that's one thing i noticed right off the bat was that the connector tube was rusted where it hits the fuel rail and the injector itseld
 
rushingbc

rushingbc

< I drive slow trucks
Sep 3, 2006
139
0
0
Beaufort, SC
i dont think there is any good way to prevent it, or even to check it out. you'ld have to take the connector tubes off the motor just to look at them, and that in it self is kind of a pita.
 
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