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Thread: 2004 400ex HELP i have air pressure building up in oil tank Reply to Thread
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  Topic Review (Newest First)
05-16-2019 11:05 PM
LedFTed
Quote:
Originally Posted by LedFTed View Post
Quote:
Originally Posted by trxproud420 View Post
Im having the same problem here on my 1999 honda 400ex when i check the oil it comes pouring out on me like it is building pressure up please help me out
different honda owner=different thread, for the most part.
now that i finally looked at the date of first post. just another Duh, moment in the life.
"I HOPE i aint wrote nutting else stupid" . seems, like that quote carries no bound's, for me.
05-16-2019 09:07 PM
trxproud420 so it just got a lot worst for me when i was trying to change the oil filter the long bolt going into the crank case broke off so idk what to to now the oil filter cover on my 99 honda 400ex has 2 bolts one long bolt and one short bolt the long broke off in the case
05-16-2019 12:59 AM
Nanook12 Piston rings could be installed upside down? Will pressurize the case...
05-15-2019 01:10 PM
trxproud420 I'm plan on breaking the bike down later tonight and going over the whole thing to see what might be wrong with it I have only had the bike for about 2 weeks and only been on it 4 times so far checked the oil when i got and it looked new so i just got on it a few times and went down the road and back and it was fine so IDK but i will let everyone know when i am done i got a lot of new stuff for it a new starter new solenoid new carb new A-ARMS shocks wires steering stem and other stuff so will see thanks everyone for your help
05-14-2019 05:29 PM
LedFTed
Quote:
Originally Posted by trxproud420 View Post
Im having the same problem here on my 1999 honda 400ex when i check the oil it comes pouring out on me like it is building pressure up please help me out
different honda owner=different thread, for the most part.
05-14-2019 05:03 PM
Austin92 The crank case vent should be releasing the air pressure. Is it clogged?


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05-14-2019 09:31 AM
XplicitRacing6 Yes, clean the jets out and make sure your needle and seat isn’t sticking, I would order a carb rebuild kit. Comes with everything you need


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05-13-2019 08:28 PM
trxproud420 so I have a new carb but its jetted up and makes the bike run hard so i do not know what i should do i guess clean the carb right ?
05-13-2019 07:43 PM
SlammedRanger Yikes. That sounds like you got a float sticking in the carb. What ever you do dont run it like that. The fuel will leak into the combustion chamber through the valves and clean off the carbon buildup and dirty the oil real quick. Which also explains why its way over full aswell. Most of the time when the floats sticking it will leak out the over flow tube out the bottom but i have seen them get clogged with mud and cause the fuel to find the next path and thats directly into the engine.
05-13-2019 07:09 PM
trxproud420 i just got the 400 ex and i never put oil in it because the guy i got it from said he just checked it and it was fine but he also told me that motor had just been rebuilt top end and timing chain kit put in and its only been about a week since i got it but last week i checked the oil and it was like new then 1 week later checked it again and that is when it came pouring out and was dirty as ever and smells like gas a little bit so i am lost lol
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