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gotta problem
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Posted by: bignickwaite

alright i just bought a 99 400ex it has some mods like jetted hmf pipe hotcam stage 1 i ride it about 5-10 minuts and it stalls out like its not getting gas . but its getting plenty of gas .so im real confused .if i let it sit about 5 minuts it starts rightup . i checked the coil and its not getting hot so i dont know. if anyone has any ideas let me know any help would ba appreciated

Posted by: hornetgod13

What sized main and pilot jets are installed? Are you sure it's jetted correctly?

Posted by: bignickwaite

yea the guy i bought it from had it professionaly done.

Posted by: interceptorz28

Can you keep repeating this cycle of riding then it shuts down then you let it sit and then it starts again?

Or did it just happen once?

Posted by: Honda#4

Do you have an air leak somewhere? about your jetting you should be running a 155 main and a 42 pilot, 160 main if you have a full exhaust.

Maybe you have bad gas or something, have you tried dumping the gas and put new in?

Maybe you have a clogged needle jet?

Fuel line clogged?

Clogged strainer in fuel tap?

Tank cap vent obstructed?

I'm getting this stuff out of my troubleshooting manual so just bare with me and the dumb questions but all that is for a no fuel flow situation.

Give me more problems maybe I can find whats going on.

Posted by: Ruby Soho

does the choke keep going on?

Posted by: northwest Texas

What about your vent to the gas cap. If air is not entering the tank fast enough, it won't flow enough gas to the carb.

One time riding, I noticed my engine wasn't running quite right. Couldn't figure out exactly what the deal was until I figured out my vent was the problem. Now mine never died like yours but there was just enough obstruction of the air flow that at full throttle gas couldn't flow fast enough.

Posted by: bignickwaite

it keeps repeaing the same thing and it has a tusk gas cap not colgged jet filled the tank dont know about the needle jet fuel line is clear . i went to the honda dealership today the guy said that it sounds like its not jetted right i dont know what size jets are in it but i gotta check it out he also said i should check my plug maybe the spark is getting put out by the fuel but im gonna do that not and ill see what happens thanks ,nick

Posted by: Honda#4

If you get the jetting numbers I could tell you exactly what to run.

Posted by: bignickwaite

alright i went to take out the sparkplug and i noticed that the coil came right off like it wasnt even attached then i went to pull the plug out and it wasnt even finger tight so i replaced the plug but the coil wire is lose aroun the spark plug and i dont know how its supposed to be attached???man im full of problems...lol

Posted by: NacsMXer

You just push the wire straight on to the spark plug.

Posted by: bignickwaite

well the coil wire doesnt fit it comes right off so i think the coil wire is wore out

Posted by: Wheelie

Take a small screwdriver with you next time you ride. When the quad dies again, loosen the drain screw on the bottom of the carb and see if fuel comes out.

Sounds like a fuel problem to me.

Posted by: m36indiana

mine did the same thing, i had to run it with the gas put on reserve

Posted by: NacsMXer

quote:
Originally posted by bignickwaite
well the coil wire doesnt fit it comes right off so i think the coil wire is wore out

Are you sure you have the right plug in it? The tip should look like this (threaded):
http://www.germanmotorworks.com/catalog/images/Spark%20plug.JPG

The plug boot won't want to fit if the tip looks like this:
http://www.monkeybike.co.uk/acatalog/spark_plug_end_cap_xtrasml.jpg

I could be wrong, but just throwing it out there as a possibility.

Posted by: bignickwaite

well the boot was worn out and last time ii fired it up it backfired and the guy at the shop notices the carb was seperated from the intake so i think i found the problem tomarrow will be the test ill be out for more than 15 minuts well guys thanks for all your help,nick

Posted by: bignickwaite

here she is

Posted by: hornetgod13

I like it! Looks good

Posted by: bignickwaite

thanks

Posted by: bignickwaite

2

Posted by: hornetgod13

I like the exhaust plug flag. I have a similar one but, not quit that huge. I bet that thing flys all over the place when you're towing it.

Posted by: Hondabeefast

bignickwaite,where in florida are you located??.......nice 400 too

Posted by: bignickwaite

i live about 20 mins west of croom springhill

Posted by: speedyquad

why would he leave the exhuast plug in when towing? they are to prevent water from entering the exhaust when while washing...my plugs come out as soon as i am done washing them

Posted by: hornetgod13

I keep the exhaust plug installed whenever I'm not riding. I don't have the quiet core or spark arrestor installed. The plug keeps rain, bugs, and small birds from getting inside. It's just an added security measure to keep things out of the motor that don't belong.