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Author Topic: Something leaking from top of engine  (Read 181 times)

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senorquill

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Something leaking from top of engine
« on: October 15, 2021, 09:55:00 AM »

Hello all,

What could be causing this yellow sort of glue like material to come out of the back side of the forward most fuel injector? I'm not sure exactly where it is come out, but photos help to explain. The engine is running fine. There was also some tiny piles of what looked like water bubbles.

Universal M25XP (1700 hrs)- 1987 C34

Ryan
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senorquill

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Re: Something leaking from top of engine
« Reply #1 on: October 15, 2021, 09:55:54 AM »

Pic 2
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mark_53

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Re: Something leaking from top of engine
« Reply #2 on: October 15, 2021, 11:15:38 AM »

Looks like blue thread lock to me.  Are you color blind or an I not seeing yellow?
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1989 C34 Mk1 M25XP Danforth 25lb, adjustable backstay, fin keel, EV100 autopilot, E7D Chartplotter, Navpod, Mack Pack, CDH diesel heater, Grp 75 start and 2 Grp 27 House batteries, Blue Sea ACR.

Noah

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Re: Something leaking from top of engine
« Reply #3 on: October 15, 2021, 11:53:08 AM »

Blue thread lock will not STAY blue when old. It looks like saltwater corrosion mixed with debris/oil??? óbut I am not a mechanic. Do you see liquid emerging around there when engine is really clean and running?
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Ron Hill

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Re: Something leaking from top of engine
« Reply #4 on: October 15, 2021, 03:00:22 PM »

Ryan : I'd cleanup that area and keep an eye on it!!  It may just be the old dirt from 1987!?!

A thought
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Stu Jackson

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Re: Something leaking from top of engine
« Reply #5 on: October 15, 2021, 06:10:46 PM »

Ryan : I'd cleanup that area and keep an eye on it!!  It may just be the old dirt from 1987!?!



A good possibility that had also occurred to me and that those very helpful photographs can't begin to help us "know".
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Robert Giroux

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Re: Something leaking from top of engine
« Reply #6 on: October 18, 2021, 07:20:21 AM »

This is just a guess but it could be Blue Devil Gasket Sealant.

https://www.amazon.com/BlueDevil-Head-Gasket-Sealer-ounce/dp/B000NOO798?th=1

What it looks like after: https://www.youtube.com/watch?v=LiDROcUG3iQ


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