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1994 f350 turbo idi o-ring fuel leaks

for the past 4 years in the months of april and october i have to replace my injector o-rings. the fuel that leaks accumulates at the back of the manifold sloshes out when you hit the brakes. anyone else having this problem? could the o-rings be shrinking or deteriorating or could maybe the tee's need replacing?
why only at these two months of the year? seal quality or season changes?
i replace all 16 o-rings when i do it, though not all of them have leaked
factory ford parts used
 
Last edited:

blacksnapon

Moderator
Staff member
for the past 4 years in the months of april and october i have to replace my injector o-rings. the fuel that leaks accumulates at the back of the manifold sloshes out when you hit the brakes. anyone else having this problem? could the o-rings be shrinking or deteriorating or could maybe the tee's need replacing?
why only at these two months of the year? seal quality or season changes?
i replace all 16 o-rings when i do it, though not all of them have leaked
factory ford parts used
Is it the same injectors all the time?
 
yes, the back 2 on the passenger side and 3rd back on drivers
the others usually have little to no seepage
 

blacksnapon

Moderator
Staff member
yes, the back 2 on the passenger side and 3rd back on drivers
the others usually have little to no seepage
check and make sure there are no burrs that may cut or otherwise damage those o-rings. There may be some damage to the "cups". You might swap the injectors to another cylinder and see if the leakage follows the injector or stays put.
 

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