Black flakes

bryant99

Cadet
Joined
May 23, 2023
Messages
23
I was wondering what these black flakes were gathering in my engin bay . I cleans them out once and more are back . When it is dry they feel like think paper pieces. Any ideas ?
 

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garbageguy

Lieutenant Commander
Joined
May 8, 2012
Messages
1,574
agreed

it also looks like there's some black electrical tape in your engine compartment - that flakes apart at some point too
 

ScottinAZ

Master Chief Petty Officer
Joined
Jun 25, 2009
Messages
831
But from where though ? The engin is red
the exhaust isnt..... right near the exhaust port in the head will still get hot enough to burn off the paint. Check the underside of your manifolds, and I bet you find the source
 

dubs283

Vice Admiral
Joined
Jul 27, 2005
Messages
5,322
But from where though ?

I don't know

The pulleys, ps pump and y pipe are painted black

Maybe it's not paint, but it looks like paint. It might not be paint but another substance that resembles paint. It's definitely in the bilge though
 

bryant99

Cadet
Joined
May 23, 2023
Messages
23
Yeah , I looked all over but didn’t see anything . I bagged up some of it to show the mechanic . Thank you for the advice .
 

Sprig

Chief Petty Officer
Joined
May 2, 2016
Messages
607
A couple questions- what boat and motor is it? How long have you had the boat? Did it just suddenly or recently start doing this? Suggest you clean the area thoroughly and then run the boat in neutral while observing the engine compartment to see if you can determine where it’s coming from.
 

Texasmark

Supreme Mariner
Joined
Dec 20, 2005
Messages
14,666
Got any black foam insulation or flotation material? A possibility would be something rubbing on the above scraping off chips.
 

mike_i

Ensign
Joined
Jun 28, 2017
Messages
942
It's difficult to tell the thickness of the flakes in the pictures. Are they very thin like paint or thicker maybe fan belt or rubber hose crumbs?
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
Joined
Jul 23, 2011
Messages
49,540
looks like algae and bilge scum that turned black
 

bryant99

Cadet
Joined
May 23, 2023
Messages
23
A couple questions- what boat and motor is it? How long have you had the boat? Did it just suddenly or recently start doing this? Suggest you clean the area thoroughly and then run the boat in neutral while observing the engine compartment to see if you can determine where it’s coming from.
I bout the boat a couple of months ago . It had a 4.3 volva penta . So I don't know if it's something new .
 

bryant99

Cadet
Joined
May 23, 2023
Messages
23
It's difficult to tell the thickness of the flakes in the pictures. Are they very thin like paint or thicker maybe fan belt or rubber hose crumbs?
It feels like a paper ish, slight rubber feel . It rips like paper. But the half circle piece has me kinda worried .
 

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flashback

Captain
Joined
Jun 28, 2002
Messages
3,963
You still haven't posted the age. Lots of rubber and plastic etc. Crap out over time..
 
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