Flylowp22

NEW QUESTION. How do I set the TPS. I've looked into the service manual which gives me no real guidance. What should the volts/ohms be at full close? 

Ok so good news. I got the thing running right. 

Not sure exactly what I did, but I took off the neck from the carb to the cylinder head, cleaned it up and the oring. Spread some high temp RTV, cleaned the filter to the sub air filter, the little cone shaped dude in the gas tank. Also replaced all the spring clips on the vacuum hoses with hose clamps. She seems to be doing just fine now. 

Ok. So I was able to figure out the connector. There was a tab I didn't see on the carburetor side. 

So the new carb is in. 

The quad starts much easier now and idles better, though there is still a little skip in the idle. 

Theeeeen the RPMS suddenly go way up probably near 2000 and it suddenly drops, stumbles for a bit and dies.

At this point I think the carb was an issue that is now fixed. So, WTF

I have tried to pull that connector apart. It just doesn't want to let go

I didn't mess with the TPS. I did try the computer reset which didn't work. I've been wondering about the carb heater. Is it really necessary? I heard it switches on under 45 degrees. And how the ! do you disconnect that thing anyway?! 

39 minutes ago, toodeep said:

I don't think he has he new carb yet, it's the next thing to try. I have had some decent luck with the cheap carbs on other machines after rejetting them but with the TPS it might be a hit or miss on this one. Who knows tough, it might be possible its comes out to be a plug and play event and just a initialization will cure all.

Right. I don't have the new one yet.bis the TPS usually a problem? The TPS on the old carb is still good. 

4 hours ago, Fishfiles said:

More than likely , that china carb is your problem , you can still get a OEM for $230-ish , or find a used OEM and rebuild it 

 

Also , I find that sometimes you need to soak the carb in a gallon can of carb cleaner ,  then blow it out with compressed air , and maybe do it more than once  at that  

I havnt RECIEVED and installed the new carb yet. It's the old one giving me trouble. What is it with after market carbs? I have never had trouble with after market parts on any of my vehicles. It had a 5 star rating. I keep hearing they are the problem but if it's made with the same materials and same dimensions, what's going wrong? 

6 hours ago, jeepwm69 said:

The Ranchers are terrible about sticky floats.  I finally replaced the carb on my daughter's 350 with a new OEM carb.  Cost me $150, but hasn't given me any problems since.

 

If you have gas in your crankcase, your float drain is clogged up, so when it should overflow out onto the ground through the bottom of the bowl, instead it's running into your crankcase.

Is this why there is a one way valve on the hose on the bottom of my bowl? This was leaking.  When I looked it up, it said that could just be plugged

No. I purchased the most expensive aftermarket. Which was still hella cheaper than OEM

WA state ethenol content is about 15 percent. The carb has been cleaned 4 times. I've been over it all with a wire and carb cleaner. I don't get it. It was running fine for a weekend and then went to crap. It leaks fuel out of the intake and when I did an oil change I drained a bunch of gas out of the crank case. Pretty sure the float isn't closing. I assume that alone would greatly effect the operation? 

Just got my first quad. Here is some details so far.
It sat in a barn 10 years!

05 Honda rancher trx400fa
Changed oil
New batt
New air filter
Cleaned carb w/wire and cleaner
Flushed gas tank
New fuel shut off valve/filter
New spark plug
Had ethenol fuel, changed to non eth. 92 Oct

When I got this thing, cleaned the carb. Fired right up. Runs and drives great everything works.
Then it started "missing" it seems. Spark plug carbons up right away. Tried cleaning carb again. Adjusted mix. Has a real hard time starting idle lops and back fires then dies. Sometimes it idles like crap then the RPMs go up out of control. I can bring them down if I shock it with the choke. It seemed around the same time I changed out fuel. But I don't think the fuel is the problem. New carb on the way.
Is there anything else I should be looking at?