oily mess By phrogman (Read 1,951 times)

[phrogman]

Hi All - I picked up a Qingli QM50QT-B2 with 3400 mi for cheap. It has the 2 stroker D1E41QMB engine. It had sat for a couple of years so I cleaned the carb and put in a new plug . Fired up and runs good. I didn't realy know how to properly adjust the carb ( Greely ) so I put both ajusting screws at about 3 turns. I have two problems - When I stop it drips the really black oil , at leas two or three drops per shut down. It's not a leak but appears to be coming from the exhaust pipe. Is this normal? There a clear plasic line on the frame but neither end is hooked up. IT is a stock tube but I can't find any parts that are missing a tube! Any ideas? Looks like it would be breather type tube . A couple fo other curisities - can't find a enge oil dip stick ( or filler port) Can't find the engine drain plug for that matter. THere is a rubbler plug on top of the left side drive gear box, but I thought that would be for gear oil only. The other thing that baffles me 2 cycle engine oil injection . The tube from the tank runs down into the left side gear box area. What gives with that? Is they a injctor pump in there that would squrt the oil back to the head? Appreaciate the help. Phrogman

[Alleyoop]

Check to see if the Valve Cover has a NIPPLE which is a breather hole. Oil will be blown out of there so they put a Hose on it and tie it up high so when hole is squirted out from the Valve Cover the oil does not come out and go all over your engine or on the floor. The hose should be at least a foot long. As far as where the oil fill and drain go, take pictures of the engine on both sides and under it. Also take pictures of the Carb then we know if it has a oil pump that mixes a few drops of oil as the engine is running.

Maybe some of the other 50cs guys can chime in, they would know more about that engine.
Alleyoop

[Bong]

IMHO correct me if I'm wrong but, 2strokes don't have a normal dip stick the oil and gas are mixxed thru some sort of oil injection system. If your scoot sat for that long it would be a good idea to drain and replace both oil and gas. clean the carb and possibly remove the oil injection system and use a pre mix.

AFAIK 2 strokes don't have valves

[Alleyoop]

Yes, we all know 2 strokes do not have valves but some people mention a 50cc as a 2 stroke which can be a 4t 50cc. And you are correct 2 strokes do not have a dip stick even some 4 strokes do not ether, they only have a round clear window to see the level of the oil. Heck my Suzuki which is a 650 does not have a dipstick it has a window to see the level of the oil.
Alleyoop

[Bong]

NOW I'm seriously confused. What could cause blk oil to drip from a 2Stroke? Phrogman needs help. D1E41QMB is 2 stroke! Again. corect me if I'm Wrong.

[Alleyoop]

Bongkaos,
Just looked it up D1E41QMB is a 2T you are correct. And the Carb has the Oil Injection right along side the Throttle Cable which is in the Center to pull on the Slide. Since it was sitting for such a long time Oil could have been dripping in and gummed up with the carbon and that is what he is seeing. So if it is that it should go away after running it for some time. Other than that I cannot think of anything else that would cause that. This summer I fixed a 2T 1981 Honda and it had that same thing but this one had been sitting for over 20 years.
Alleyoop

[kz1000st]

at leas two or three drops per shut down.

Guys, guys, guys. Two or three drops??!! Welcome to the world of two stroke engines. My old 500 triple used to ooze slimey oil out the end of the pipes all the time. People used to hate to ride behind me because I would leave oil droplets all over their windshields. The black oil you're seeing is unburned oil that gets blown out the pipe and either covers unsuspecting motorists or drops off the end of your pipe when you stop.

I used to love covering Harley Sportsters with it as I left them in the dust. But that's another story.

[Alleyoop]

Covering Harley Sportsters in the DUST KZ with a two stroker!! Now who is blowing smoke out of you know where(HEHE).
Alleyoop

[phrogman]

Thanks for all the feedback, Aleey - the carb does not have any port for oil to be injected. (this is what confused me) it only have throttle and choke inputs. I attached a picture of the carb. If it wasn't for an oil tank next to the gas tank I would have swore it was 4T. The oil tube is routed to the lower left side down near the rear wheel. I haven't opened the covers on the left side, I was hunting for an IPB so I would have a road map + plus if a mess up a gasket I don't have a spare.

Attachments:

[Bong]

Hi All - I picked up a Qingli QM50QT-B2 with 3400 mi for cheap. It has the 2 stroker D1E41QMB engine. It had sat for a couple of years

[Alleyoop]

Oh, I thought that Brass part was the Oil Injection port, so thats a choke then.
Well if you have an oil tank then you must have a pump. You could also eliminate the Oil pump and just pre-mix the oil with your gas, usually 40.1. It should smoke some but it should be Blue Smoke coming out, if it smokes to much that means there is to much oil in the mix.
Alleyoop

[kz1000st]

Nov 26, 2010 20:55:03 GMT -6 Alleyoop said:

Covering Harley Sportsters in the DUST KZ with a two stroker!! Now who is blowing smoke out of you know where(HEHE).
Alleyoop

Dude. The bike in question was a KH 500 triple capable of 12 second quarters even back then. Seventy horsepower and only weighed 408 pounds. I took it over 100 mph once. It was the first bike I ever did that with and scared me silly. The front end got real light, guard rails flashed by so fast they looked about 6 inches apart. I rode it lightly 99 percent of the time. But it was nice to know the ponies were there when I needed them.

Sportster owners where I lived thought all Jap bikes were 350 Hondas and did things to intimidate you. They learned the hard way that there were Jaguars in the forest.

en.wikipedia.org/wiki/Kawasaki_triple

The H1 500 was also the product of a piece of marketing genius on behalf of Kawasaki. They identified their target customers perfectly. US bikers under 30 years of age generally just wanted to be the fastest kids on the block

Mine was a 1974 model, had a front disk brake and guess how old I was when I bought it?

[phrogman]

Is there a down side to adding the oil to the gas and disableing the oil injector pump? ( other than the PITA for mixing) Is it really that easy? It is leaking more than a drop or two, I either have to fix the injection system or mix in the gas.

[jhbietz]

I worked on a smoker last winter. On that model the oil pump was driven off the rear wheel. Seams like a bad Ida to me as when your not moving the pump is not supplying any oil. IMHO premixing is the way to go.

[kz1000st]

Let's try this again:

When I stop it drips the really black oil

Wait! You are using two stroke oil in the injection system aren't you? Regular oil will slime up badly after it runs through a two stroke engine.