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How are you keeping beetles from eating holes in your plastic tanks and fuel lines?

13K views 53 replies 12 participants last post by  sledman8002002  
#1 ·
One of our gen fuel tanks must have 50 or so little holes in the side now. Not all are leakers of fuel.
The only repair is to plastic weld the holes with a soldering gun.
I have been thinking, is there an insecticide that could be sprayed on the tank?
Or maybe all the tanks need to be taken off the gens, then flushed and dried and stored inside.

It is an asian import the Camphor beetle. Camphor Shoot Borer (Cnestus mutilatus)

A serious eater of plastic gasoline tanks. They have also ruined most of my red plastic gas cans.

Our Polaris ATV, all the fuel leaked out of the gas tank, and looking at it the beetles had eaten holes into the rubber fuel line. The holes they make are slightly smaller than 1/8". Have not seen them attacking car gas tanks as I think the plastic is better quality and they cant smell the ethanol.
 
#34 · (Edited)
I ordered some more aluminum tape to finish this. But beginning to wonder if vapor fumes will push the tape off the plastic. So maybe the tank should also be shrink plastic wrapped, with something like this

When I finally get some fuel in the tank, I will let you know how just the tape works. I am pretty certain this plastic wrap does not react with gasoline. And even wondering if that is all it would need, if it is vapor proof wrap.

I am also wondering about the white shrink wrap plastic put on boats.

LLDPE has an A-Excellent rating against gasoline
 
#35 · (Edited)
I got the generator together, a Max Force Generac 6500 watt.
Fuel tank seems to be doing ok with aluminum duct tape covering the plastic.

This gen had sat about 3 years unused, It had no spark! I had to buy a new coil. Then it ran good. It also needs a new GFCI outlet, some how it is cracked.
The oil filter also I bought a Fram, so need to change the oil.
And the oil pressure wire broke, oddly I found it and the other 2 wires, red and white, seem to be partially chewed on, maybe a squirrel or a mouse did that, the yellow wire was completely parted.

I had to drain out the older 2 year old gas I put in for a test, as it could not run properly unless partially choked.
Video of it running

Coil is #
0G9241T

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#39 ·
I was actually thinking about that the other day. I was wondering why didn't they just coat the inside of a metal tank with plastic like HDPE to stop it from corroding...

But then it hit me.... they probably thought of that already but instead, decided to drop the metal tank altogether and just make the whole tank plastic.
 
#42 ·
Today pulled my other gas tank from the TroyBilt.
It is again HORRIBLE, all eaten up again with at least 20 new holes from last year when I fixed it.
The camphor shoot borers even ate new holes right into patched holes
I plan to cover whole tank in Aluminum tape like the other.
You can also see some holes are just partial, some actually are full thickness as in they leak gas.

I am surprised more of you dont have a problem yet. Of course if the tank is metal your good to go except for the rust.
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#43 ·
I have also repaired a bunch of plastic gas cans about 60 gallons worth, all had holes eaten into them.
My plan is to put them in white leaf bags and hope the bugs stay away, the bugs shy away from the white color supposedly from what the entomologists say.

I use them to fill my boat gas tank which is on a dock and it is whole lot cheaper than marina gas.
Boat tanks are monel metal, and each one is 150 gallons. Lets just say with gas priced sky high, I dont put much gas in the boat now.
 
#46 ·
Today, 87 degrees and the fuel eating bugs are here!
They were crawling and flying all around one generator tank, still on top of the tarp. None had found their way under the tarp yet.
At least 25 little Camphor shoot borer beetles.
I sprayed them with Hotshot, they died.

I have two gallon gas cans in white plastic bags, and no boozy bugs are on the plastic.

I am building a 12 by 16 gambrel roof shed to put these gens into. I will make sure it is well sealed.
video link

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#53 · (Edited)
I've had similar issues with pests in the past, and it's always a pain to deal with. From my research, it looks like the best way to prevent further damage is to store your tanks inside or cover them with something to impede the beetles' attack. Chemical treatments are not advised since these beetles feed on a wide range of trees, and it's not worth the potential harm to other wildlife. That being said, I recently discovered a pest control company that was a huge help to me - Wasp Pest Control Sunderland. They were able to provide some solutions and advice for dealing with pests, and they might be able to help you out with your beetle problem as well.