Engine stalls!? help

[JH Pinoy]

I recently bought a 6.5 hp greyhound engine from Harbor Freight the other day. I've had the engine for 3 days and a runtime of no more than 20 mins. Just today after I done doing a small lap my engine stalls. I went back to fire the engine back up it starts normal. As I move the carb from fully close to half or open after a couple of seconds my engine keeps stalling. What can I do to keep it from stalling?


Any help is appreciated.
thank you
-Josh

 

[bighead]

Does it do it when you are turning in corners. Your clone has a low oil senser. When you turn the oil goes to one side triggering the low oil switch.

Check to make sure your carb is on tight.

 

[Gokarts4Life-11]

The spark plug could be faulty

 

[the-cyborg]

Try adjusting your idle speed up a little bit and see if that helps.
adjust it to the point just before your clutch tries to engage.
What I with one that is on my kids kart was hang on to the cart with one hand and adjust the idle until I could feel the kart start tugging then back off just a tiny amount.
Doing this will allow you a better air/fuel mixture on these stupid EPA carbs basically whats happening is at lower rpm's your starving the mix of air. on older carbs you had an idle air adjustment that you could tweak, but not these new EPA certified carbs.
Any way try that and see if it might help.

 

[Russ2251]

I recently bought a 6.5 hp greyhound engine from Harbor Freight the other day.

Direct from the department of redundancy department.

Assuming it is not the oil level sensor, exchange it or get a refund while it is under the limited warrantee.
You should not have to make any adjustments or changes.
Straight out of the box should operate anything.
Exchange policies are very, VERY liberal on Chinese powerplants.

 

[CaptCanadia]

I have that engine as well. It has an oil sensor that is very annoying for off roading. To keep it from stalling always keep tons of oil in the engine. Soon I'll be removing my oil sensor, but it shouldn't be a problem for you if you have a lot of oil in the engine

 

[devino246]

I have that engine as well. It has an oil sensor that is very annoying for off roading. To keep it from stalling always keep tons of oil in the engine. Soon I'll be removing my oil sensor, but it shouldn't be a problem for you if you have a lot of oil in the engine

You dont want to overfill the engine with oil. Too much oil will cause excessive drag when the con rod and crank dip into the oil. Just cut the wire coming from the oil sensor.

 

[CaptCanadia]

Ya I did that today. And ya thanks for pointing that out, I found that out the hard way haha

 

[Russ2251]

Just cut the wire coming from the oil sensor.

No need to cut anything...a disconnect will do fine. I will post pics if needed.

 

[r_chez_08]

Removal is only neccesary if you have certain internal performance modifications that need the room. I only removed mine cos I was removing the governor anyway, and I was hoping to get a few quid for it on ebay.

 

[karl]

I have that engine as well. It has an oil sensor that is very annoying for off roading. To keep it from stalling always keep tons of oil in the engine. Soon I'll be removing my oil sensor, but it shouldn't be a problem for you if you have a lot of oil in the engine

I never had a problem with the low oil sensor off roading. Mine may be faulty.

 

[CaptCanadia]

I never had a problem with the low oil sensor off roading. Mine may be faulty.

It really shouldn't be a problem unless you have no suspension and are hitting a lot of pot holes like were I live. My engine doesn't always stall either. Most of the time it will choke then come back, like if you were to have a momentary switch and and tapped it. But it does mess with the performance and sometimes it will completely choke out. Very annoying. Don't worry about yours it's most likely fine.

 

[Bluethunder3320]

i ran my clone with the low oil sensor in it, just running it on the ground,,, and ya it shut off when it tipped too far, but other than that it was fine.

i wouldnt trust a 2 cent piece of plastic from china to make sure you have enough oil in there. just cut it and check from the dipstick.

 

[CaptCanadia]

That's what i did...on accident..lol

 

[Bluethunder3320]

although, the dipstick is probably less than a 2 cent piece of chinese plastic. BUT it doesnt have moving parts!

 

[Doc Sprocket]

i wouldnt trust a 2 cent piece of plastic from china to make sure you have enough oil in there. just cut it and check from the dipstick.

Bingo! The "Low Oil" sensor circuit was created for the sole use of village idiots- contractors to be specific. Guys that really don't give a burnin' rat's rearend what is or is not inside the engine, or even if it works that day. We have a few guys like that on staff, makes me crazy. They figure that "Since I didn't pay for this generator..." Anyways (he says, sidestepping a snowballing rant)

We here at DIY have absolutely no excuses. Fill your 'case with an appropriate oil, check your oil level regularly, change it according to good maintenance practises.

Having a "Low Oil" sensor just causes complacency. And technology, frankly, sometimes sucks. I despise the fact that the world relies on anti-lock brakes to the point where if the system fails in a panic stop, 99+% of drivers will get into a 4-wheel lockup and crash because we rely too heavily on technology. (Oops- I must be in a ranting mood...)

Anyways- back to the topic (again). Just stay on top of it, and you're fine.

I don't know what decides how sensitive the sensor is- But I thrashed the daylights out of my kart on very rough terrain with my GX340's oil sensor still intact. I can count on one hand the number of times my ingition was interrupted in three years of driving it.

 

[thenewguy]

No need to cut anything...a disconnect will do fine. I will post pics if needed.

I am having the same issue with my HF engine. Is it difficult to remove the low oil sensor in this engine? If you have pics of how you did it that would be awesome.

 

[karl]

anti-lock brakes to the point where if the system fails in a panic stop, 99+% of drivers will get into a 4-wheel lockup and crash because we rely too heavily on technology. (Oops- I must be in a ranting mood...)

My brother owns Jeep cheeroke and a wrangler and the anti lock brakes dont work lol. All my friends that drive have older crapper cars and all of them the anti lock brakes dont work. They had then from the factory. And when riding with him, 4 times people have slammed there brakes to make a turn that they almost missed and we almost slammed into the back of them with a 1/4 in thick steel bumper......

 

[Russ2251]

I am having the same issue with my HF engine. Is it difficult to remove the low oil sensor in this engine? If you have pics of how you did it that would be awesome.

See post #3 HERE.

 

[anderkart]

I don't know what decides how sensitive the sensor is- But I thrashed the daylights out of my kart on very rough terrain with my GX340's oil sensor still intact. I can count on one hand the number of times my ingition was interrupted in three years of driving it.

Riding a heavy off-road kart on low traction surfaces would have never developed as much G-force going around corners (causing the oil to slosh over to the side) as a lighter/more-nimble street kart riding on high traction surfaces like pavement.