My sons 14 duramax dually... rodents ate the return line above the pump and the wiring to the fuel regulator. What a mess! PITA!

Try putting small cloth bags with moth balls strategically placed underneath the hood and underneath the truck.

I had a neighbor who always raised the hood on his truck. He claimed the rats and squirrels wanted a place not out in the open. It seemed to work for him.

I have only heard of this happening on vehicles that sit so maybe drive it more often if that’s the case.

I used to have that problem at home. I took a barn cat from my coworker; no more problems with rodents (including squirrels).

Thanks guys I’ll try it.. they have cats and yeah they are out on 22 acres, horses, barns, hay etc... I told them, don’t feed the cats!
He drives it every day.

Being in the desert SW we have pack rats that love wiring. These rats don’t like lights, so many but any kind of lighting under the truck. I use led flashing light under the hood but a company call RAT BE GONE . A magnet holds them in place and alligator clip connect them to the truck batteries, have not had a problem since installed them, which is over 5 years.. Cats out here make great coyote food ....

Mice like dark warm places and are notorious for getting into Onan generators. They love plastic and will chew thru metal wires as well. I was told they do that to wear their teeth down because they never stop growing. Another story was something in the plastic on wires is irresistible to them. Last winter they were comfortably living under the hood of my motorhome. Eating the battery cable protective covers. I set traps and caught at least 5-6. No other damage. I don’t know anything that is really effective at keeping them out. Mothballs, dryer sheets, soap. They want in they will get in and stay in no matter what’s in there with them. They do a lot of damage to generators! I’ve fixed many that mice nested in and caused big repairs.

get some peppermint oil, mix it about 60/40 or a little less with water and then spray it over wiring, plastic parts, ignition wiring, etc. Rodents won't touch it.

Call insurance they’ll cover it

Da m squirls ate the fuel line in one of our cars a few years back. 22 rifle got a bunch of them and it never happened any more.

FRESH CAB RODENT REPELLENT....problem solved...

quote:

Originally posted by SCDIV1:
Mice like dark warm places and are notorious for getting into Onan generators. They love plastic and will chew thru metal wires as well.

When I sold my last motorhome, I told the new owners at least 3 times, to check the generator fins for a mouse nest if it has sat for a while. 2 separate times mice made a nest in the front engine cover, and when you started the generator, it would pull their destroyed nest over the fins of the generator. I always checked it after the first time, but for some reason, they loved that area!

The older design Onan's were the ones that suffered the worst.

Onan did away with ignition points and used a plastic rotor attached to the end of the engines crankshaft at the connection point of the generators rotor. Just like a crank trigger. 2 pole pieces swung by an ignition module mounted above.

Mice nested right there and you go to start it and the plastic pole piece breaks off.....NO spark.....No start...

To fix it....Remove generator.....disassemble as needed to remove generator end completely.....replace ignition rotor.....

Its not out of the question to have one nearly impossible to break apart from years of being together. I literally sawed one apart once.....

The older machine with points never suffered this issue....

Give me a set of points anytime....

New plug pigtail came with 8” of lead thank god but a real pain to get wires out of buried loom for connection. All done.

Whomp I thought u were pullin my chain! Ordered some! Thanks

quote:

Originally posted by stk 758 BP!:
New plug pigtail came with 8” of lead thank god but a real pain to get wires out of buried loom for connection. All done.

Whomp I thought u were pullin my chain! Ordered some! Thanks

Saw something about two weeks ago on this.A bar of Irish spring soap will keep them away. If yoiu try it and it works let me know just for the knowledge of it.

Rats love silicon grease. Have seen them dead laying on the floor with their mouth still wrapped around the tube of it.

"One Bite" is the best stuff I have found.

If you use a trap...bait it with peanut butter from the dollar store...they can't leave that stuff alone.

Peanut butter is by far the best bait. The plastic one hand squeeze trap and some Jiffy and you got em. Any “magic” stuff you find at Home Depot is a waste of money.

Last year I spent about $40 on various magic repellents to try and get rid of a woodchuck (gopher). They often take up residence under my shed. None of that stuff did a thing.

I borrowed a proper sized trap and caught him in 1/2 an hour with some cut up apples and relocated him to some nice woods.

I have about 5 bars of Irish Spring soap in my motorhome and I have sprayed the peppermint oil most every time I am there. Still have mice.

I also mop the floor with Pinesol very often and keep towels and things like that in sealed plastic bags.

Good luck in getting rid of them.