Mud daubber dust in engine

Tech Tony

Petty Officer 2nd Class
Joined
Apr 30, 2016
Messages
105
I went for a 28 mile test ride in a boat I just bought. Later when I was home ant looked in the engine compartment, it was all dusty and a mud dauber nest was on the cowling floor, it fell from the air intake. I took off the air breather cover one a fine film of dust was stuck to the inside cover. How long can I expect till the engine blows up?...
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
Joined
Jul 23, 2011
Messages
49,585
I went for a 28 mile test ride in a boat I just bought. Later when I was home ant looked in the engine compartment, it was all dusty and a mud dauber nest was on the cowling floor, it fell from the air intake. I took off the air breather cover one a fine film of dust was stuck to the inside cover. How long can I expect till the engine blows up?...
between 1 hour and 5000 hours depending on engine, maintenance, etc.

How long is long, how far up is up.

not sure where you are starting with, what type of engine, etc.

if you didnt know what kind of boat you just bought, could you answer the question with the minimum information

if you have an outboard, clean the bugs out
if you have an i/o clean the bugs out

usually in both cases the motor will be murdered by lack of maintenance long before any dust does any damage.
 

JimS123

Fleet Admiral
Joined
Jul 27, 2007
Messages
8,165
I went for a 28 mile test ride in a boat I just bought. Later when I was home ant looked in the engine compartment, it was all dusty and a mud dauber nest was on the cowling floor, it fell from the air intake. I took off the air breather cover one a fine film of dust was stuck to the inside cover. How long can I expect till the engine blows up?...
That scenario would indicate that the PO did little maintenance. Thus, you just might be on borrowed time.

Usually, when buying a second hand boat, the first thing to do is check the fluids, wheel bearings, etc, etc, before ever splashing it. That would require removing the cowl. Thus, any mud daubers should have been found right away.

The best suggestion is to do the "Preventative Maintainance" now and maybe you'll be OK.

Now here's the "Rest Of The Story" that I simply have to share.

When my oldest son was heading off to College I bought him a second hand car. Not wantijg to trust some idiot off CL, we bought it from a dealer. Paid more for sure, but it came with a 180 point checkup.

When we got it home, being the SOB that I am, I checked it out as well. In the air cleaner there was a mouse nest and several pounds of bird seed. I cleaned it, got a new air filter and vacuumed out the carb. It ran OK and I was good to go. My motto is never trust anyone.

Anywhoot, I called the Manager at the dealer and told him the story and said I would never deal there again. Two days later a check for $300 came in the mail.

Moral of the story, do everything yourself...
 
Last edited:

Sea Rider

Supreme Mariner
Joined
Sep 20, 2008
Messages
12,345
Moral of the story, do everything yourself...
If with proper spare time along being handy on DIY works No one will do it better than yourself. I don't know how to do it, start by learning how...

Happy Boating
 

cptbill

Senior Chief Petty Officer
Joined
Oct 6, 2012
Messages
762
If you live in an area where mud daubers are around you have to check every opening all the time. I have take to spraying home defense into Thru hulls and around hatches when I know the the boat will be sitting for a while, Have to do the same thing with the RV
 

topgun3690

Lieutenant Junior Grade
Joined
May 7, 2019
Messages
1,034
Saw the first mud dauber of the season last week.....what a PITA. Have found that they do not like WD-40.....I spray a light coat in appliance compartments on the RV....it dries but leaves a film. I keep a cover on the boat, even though it is inside......it helps. But am always on the lookout for their mud nests and try to kill every one I see. If you miss one and it just came out of something, it will be back in a few minutes with more mud. They are relentless......
 

cptbill

Senior Chief Petty Officer
Joined
Oct 6, 2012
Messages
762
They get in places that you would never expect them, found one last year in the transmission vent hose, it's got a screen on it now
 

RBoyd1971

Petty Officer 2nd Class
Joined
Oct 20, 2020
Messages
165
I have a Honda 4 wheeler, I cleaned the carb on 2 times before I found a mud daubber nest in the air intake snorkel up near the gas cap under that plastic cowling by the tank. I noticed the when I took the cover off the airbox it ran perfectly, then figured it out. I hate them things.
 
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