Low Oil Light

dacheedah

Working on my build , I am prepping a Lifan 420 to stick in my G9. I see a lot of people remove the oil sensor because it has a habit of cutting out the motor. My question is instead of removing the sensor has anyone unplugged the wire from the motor and run the wire to the dash to make a low oil idiot light? This way it wouldn't kill the engine but when it went on and stayed on, it would let you know you need to check on the oil.

BGW

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raydhd

There is also concern on it failing and coming apart under more strain and taking out other parts when it does.

Shepard

Most operator remove the low oil switch when they remove the governor internal parts. I know your going to say you already unhooked the governor --- but did you know that if you don't remove the governor gear and flyweights there's a chance they could cause problems. If your going to rev the engine over stock specs [3600rpm] centrifical force can cause the governor gear to explode sending schrapnel inside the engine and possibly in the gearing. The gear is made of plastic with metal weights.

dacheedah

I was going to leave it until i was upgrading the valve springs and a keeper found its way inside. I had a rag along the bottom but it went down the intake next to the rod. Since I opened it up I pulled the governor all out. On another forum they put a bolt sticking up to connect the governor arm to and only hook a pull back spring to it. Before I reassemble it seemed a good idea to disconnect the low oil shut off and wire it to an idiot light in the dash, old school but seems like a cheap tap on the shoulder.


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Chris15005

I removed my low oil light and used the wire and a toggle switch for the kill switch on my Vegas carts engine.

yamarancher

You need to change the flywheel & coil to make it rev anyway. rev limiter on the 420. on the shaft going up through the block I just took a small pair of bolt cutters & cut it off & use the govenor arm for the throttle.

David Maner

Looking at a parts diagram for a honda gx390 I don't see as there would be a problem. Nothing to come apart due to higher rpms, nothing rpm related. Not sure the clones use the same kind of float assembly as the honda does but the clones are a clone of the honda.

Personally I think it would be a good idea to do what you're thinking of doing If the engine I have in my cart now came with a low oil level shut off I'd do exactly as you're thinking of doing.

What could it hurt is what I would like to know

So the light might come on when traveling up a big hill or going down one no big deal no harm done if its only turning on a light. If in your every day driving it comes on it would definitely let you know to put oil in the engine.

I say go for it.

Rooster59

Like Chris said, I think the low oil sensor performs an engine kill function. Seems like that would be backwards of a sensor that will light up a light when activated. But I don't know.

David Maner

As long as there is a set of contacts that open and close, matters not which is which, N/O or N/C

a light can be wired to come on when the contacts change position.

More than likely the contacts are Normally open and close on low oil to ground out the coil to kill the engine.

I spent many years working industrial electrician

dacheedah

I was thinking of putting a time delay relay on it, that would reduce the flickering light. I could add some diodes and another relay that goes on for five seconds as a validation the light is working when you start it up.


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