Bogging out at full throttle - suggestions?

[fletch]

When I open up my atc 185s at full throttle for a long period of time the whole trike bogs out and sputters and gets no power.

This happens in all gears and all throttle positions after I have been at full throttle.

It goes away after a while if I let it sit.

Before I start troubleshooting I want to get some direction.

Is it the engine heating up or one of the jets screwed up?

Thanks! :beer

[Dammit!]

Could be many things. My gut reaction was that the float bowl is possibly emptying out when you hold it WOT and not filling back up quickly enough.

Edit: could be a bad/clogged gas cap vent too.

[ceaserthethird]

Clean the carb - make sure the float is working prop. , do a plug check at WOT ...

any after market pipes , filter ect ..?

Ever try seafoam ?

[theonlyjosh]

My 200N did that and i cleaned carb with combustion chamber cleaner and took all screws and EVERYTHING in carb out to soke in cleaner... now it works like a charm cept for my choke... lol

[fletch]

thanks for the suggestions. I suspect the carb as well. I have never heard of sea foam but now that I have reserached it I may try it.

[ceaserthethird]

Works wonders for me and few other's here , Trike friendly

[fletch]

so the sea foam motor treatment goes in the oil AND the gas??

[ceaserthethird]

read the directions , i have done both ...Works Perfect

Going to perform this on my 4 stroke soon ... just added a trike to my collection .

[mike84bigred]

i would try cheaking the timing and a valve clearances. my yamaha was doing that and when i rebuilt the top end and set the clearances, it ran great after, well except it burnt oil, but thats a totally diffrent story.

[Chucksoup]

Check your air filter. If you are running it hard and it starts to crap out, its proly overheating. You want to have your carb gone through, jetted and adjusted. You should run it around 3/4ths when trying to run it wide open on a straight away. Any more then that it will proly over heat. All I can say is make sure you have an inline fuel filter, no crap in your gas tank, your carburator blown out and rebuilt-old parts in nessisary-, jetted, throttle needle on the right setting, and your main jet big enuf. Wide open throttle response is from your main jet, needle setting, and mixture of fuel/air. Good luck! Also you should consider running primeum, it keeps your bike cooler.
Have fun.:pics:

[TimSr]

Could be many things. My gut reaction was that the float bowl is possibly emptying out when you hold it WOT and not filling back up quickly enough.

Edit: could be a bad/clogged gas cap vent too.

First thing Id suspect too. Floats are probably set too low. When you let off to quarter to half throttle does it pick back up and start running again?

Did it run okay before, and it just started doing this?

[fletch]

Yeah it ran great all day. We were out riding for about four hours. On the way back we were on a flat dirt road and I opened it up full throttle for a couple of miles and it started to get no power so I slowed down and downshifted and it still ran like it was starving for fuel with no power. I shut it off and I waited about a minute and pull started it again and it ran great the rest of the way back to the house. I did not run it at full throttle back to the house only about 3/4 throttle.

I was just trying to keep ahead of them 05 and 06 quad couches I was riding with :TrikesOwn

[Dammit!]

Next time it does it, pop the gas cap off and see if it clears right up.

[fletch]

thanks I will try that

[fletch]

I added seafoam to the gas and oil and ran it through then I ran it again this weekend and it started bogging right out of the gate at all speeds. I stopped it let it idle and it started running good again for about an hour then it started bogging out again at all throttle positions. I had to limp it home with very little power.

I am suspecting from what I am reading that maybe my float bowl is bad. I already checked the air filter and popped off the gas cap.

Any other suggestions?

[jason 32]

whats the plug look like?
your yank dirty?- hows it run on reserve?
when wot if it sputters it could be too rich /floats stuck from dirt?/ or water in the carb?

[fletch]

whats the plug look like?
your yank dirty?- hows it run on reserve?
when wot if it sputters it could be too rich /floats stuck from dirt?/ or water in the carb?


plug is a nice light chocolate color the way it is supposed to be and the plastic tank is clean as a whistle.

[IrvSLedman]

hmmm we had a 125 that did that, turned out to be the cap... and I always run mine on resv. idk why really.

[bruner racing]

mine did the same and its not carb or valve clearance both are good any ideas?

[1984 honda 200s]

for my 200s, i could go maybe 10mins on WOT then it would spit and miss and chugg... finally had enough, i took the carb appart and cleaned it AGAIN..still did the same, so i played with the throttle needle and air/screw setting, throttle needle is currently set at the last notch at the top, and air/screw set at approx 2 3/4 turns out. runs fine doesnt miss a beat, can go WOT for ever lol

[bruner racing]

okay il try that
ive put a differant carb on and it still dont run good
the valve clearances are good
the coil, cdi box, pulsar and all wires are good
its on time
has good gaskets
good piston rings and cylinder
great compression
carb cleaned
good venting gas cap

it runs fine idles good when you get going itl be fine, when it winds up it will sputter in all gears. il shut if off for a few seconds and it will run a bit better and then start to run bad again. when i say a bit it still sputters kinda. idk what else to do

[Eberanth]

I'm having this same issue. Will try suggestions