Taotao Panther 150 starting issue [SOS] By hotrod55 (Read 1,123 times)

[hotrod55]

Well, actually it starts and runs for about 10 seconds.
I put on a new carb and it will start, but seems like it runs just long enough to empty the bowl. I have also replaced the fuel pump, but wasn't sure which line goes where.
If it stes for an hour, it will start and run for the afore mentioned 10 seconds.
Any and all help is appreciated. Details on which hose goes where would really help.

[hotrod55]

Here is a photo of the fuel pump and hoses.

[trashtruck12172]

[hotrod55]

Thank you for the response.
I have it hooked up as you suggest other than the one you have marked as tank is labeled vent on the back, so I plugged it off because fuel spits out of it. The one you marked as overflow? Is where I hooked the tank and it is labeled in on the pump.

[Alleyoop]

If labeled in on the PETCOCK that is FROM THE TANK, the other one PLUG IT UP not needed. The middle one with a bend is the VACUUM from the INTAKE MANIFOLD and the other one pointing in the same direction goes to the CARB. Also you FUEL FILTER IS BACKWARDS the bigger end always goes toward the carb.
So that is all fine NOW, is there another one on the outlet from the tank or how is that hooked up.
Alleyoop

PICTURE OF THE CARB AREA showing the HOSES, INTAKE and FILTER SIDE.

[hotrod55]

Just one line from the tank. I never even paid attention to the filter. I just hooked it up the way it came out of the box. The filter was already attached. Dopey me, should have double checked it. Lol
So..... Could the filter being backwards cause the bowl to empty faster than it is getting supplied?

[Alleyoop]

Could be depends on the filter. There is a space between the filter and the end of the it so there should always be gas in that are. Gas should flow through the outside of the filter and not from the inside of the filter out.
PICTURE of the HOSES would also help you may have to many things on the vacuum connector or what not or connected wrong which would not create enough suction on the PETCOCK to open it and allow fuel to flow.

[hotrod55]

Ok, thank you.
The vacuum line from the intake has a tee. From that tee a line goes to the angled port on the pump and a line goes to the top of the carb where the diaphram is on the opposite side from the fuel inlet only higher.
Right after it dies, I can open the bowl drain and fuel runs out, but the engine won't start again unless I leave it alone for half an hour. It is driving me nuts! And that's a pretty short drive.........in a round about. Lol

[Alleyoop]

So the bowl has fuel when it starts how long will it stay running or do you ride it around. When it starts cold does it run for about 5 minutes then it dies? Then it will not start until about 15-30 minutes after that?

[hotrod55]

It only runs for 10-15 seconds, then dies, just like turning the key off. Attempted starts after it dies result in starts up to idle speed then dies. It will do that about 2 times and then it is a half hour wait and repeats the process all over again with the exact same results. Even spraying starting fluid in the throat of the carb yields nothing.
The thing runs like a champ for the 10-15 seconds and even has great acceleration, until it dies.

[Alleyoop]

How many miles on the puppy? and have you had the valves adjusted on it?

Have you adjusted the Carbs Fuel Mixture? Turn it clockwise until it stops then turn it counter clockwise 2 1/2 turns and see if it acts better.
Alleyoop

[hotrod55]

I have no idea how many miles are on it. I just bought it a month ago for $200 because it wouldn't even turn over.
I'm a certified small engine mechanic(from back in the early 80's), but I'm not familiar with constant vacuum carbs or chinese engineering.
It runs perfect until it dies. Should I try eliminating the pump and let gravity feed the carb? I assume I still need vacuum on the top side of the carb. Is that the decelerator?

[Alleyoop]

Ok, its a problem child and is why they sold it, it is in need of a little TLC.
First adjust the Valves set them both to .004 inchs and then turn the FUEL RATIO MIXTURE screw like I told you, turn it clockwise until it stops then counter clockwise 2 1/2 turns.
Alleyoop

[hotrod55]

Ok. That is somewhat involved. I will try to make some time to adjust the valves and see what transpires.
Thank you, Alleyoop!

[Alleyoop]

Adjusting the valves is not hard just the first time after that you will be able to do it in 15 minutes.
Here is how-to do it now remember set them BOTH TO .004 inchs.

A word of advice after you set them turn the motor over by hand you can do it with a wrench on the flywheel nut or you can take the CVT cover off and turn the VARIATOR by hand turn it counter clockwise. So after you adjust them turn the motor over a couple of times by hand before you put the valve cover back on and RE-CHECK the valve gaps.

What I do is are align the cam sprocket so the lobes are off the rockers and then try to insert the .005 feeler gauge in the gap and it should not go in but the .004 should that way when you button it back up you know the gaps are set good and not to loose or to tight after you tigthened up the lock nut.

You want to do this once and not have to tear it apart again to re-do the valve gaps, until of course after 2000 miles or so down the road.
Alleyoop