A fuel leak has sprung in the valley underneath the intake manifold on my 85 6.2, dont know where its exactly coming from

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nycxjeremyy

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As the title states, a fuel leak has sprung down there, we already tore off the intake, turbo housing, however we couldn't find exactly where its coming from, I have a video of said leak, but its really hard to pinpoint, I hope its just a line, and not the IP itself.

Any second opinions would really help, i did replace the rubber lines when I was in there, did not touch the metal lines though

Attached are the videos of how it looked like/how it ran without the manifold, photos will be attached on this post aswell
Thank you again.

(Also, I have some oil coming from the intake, bit uneasy about it)



- 1985 6.2 Detroit Diesel Motor w/h ATS Turbo Kit
 

Blue Ox

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There's a lot of potential leak points on those pumps. Injector line leaks are extremely unusual, but that fitting at the 10 o'clock position looks wet.

My usual go-to is to hose everything down with brakekleen and blow it off with compressed air so it's positively bone dry. Fuel migrates quite easily until it finds a low spot to drip from. Almost every pump that's ever come into the shop for leak repairs was "leaking from the bottom." Because gravity. But if the surface isn't perfectly dry it's really hard to see. You can also probe around possible leak points with some torn newspaper. The fuzzy edge will pick up fuel easily and turn dark, helping you find miniscule leaks.
 

gympsy

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Inspect areas near the mounting clamps: vibration can cause hairline cracks.
 

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