1987 trx 250x issues - Honda ATV Forum
Honda TRX Discussions for the Honda TRX, 90, 250, 300, 400, 450, 700

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 22 (permalink) Old 01-25-2013, 08:36 PM Thread Starter
Member
 
rem28ga's Avatar
 
Join Date: Jan 2013
Posts: 31
1987 trx 250x issues

Hi
I am new to this forum, but not to quads. I have several others, but just picked up my first Honda last week. It is a 1987 trx 250x. It came with new tires, good plastics, g-force axle and DG exhaust (stupid loud) for $300. The former owner could not get it to run. I bought it, brought it home and with a little tinkering (adjusting the valves to spec)and cleaning, I got it to start (rough at first) and then was able to ride it. My problem now is that it won't stay running. It has great spark, new gas, I have totally cleaned the carb twice, new jets upped the main to a 130 and the pilot to 40. It is total bear to kick over. I see that the decompressor cable is attached to the head, but the bracket in front of the cam follower shaft is missing so I can't adjust the decompressor. It appears the motor may have been rebuilt not too long ago, or at least taken apart, because there are new gaskets throughout.
Now when I try to start it, it will fire briefly on the third or fourth kick, then die. There is fuel in the bowl, but when I pull the plug it appears dry. I have used two cans of carb cleaner to clean out all of the ports and crevices of the carb body. I adjusted the air/fuel mixture screw out to 2 1/2 turns to start. I can't figure out what else it could be. Could it be out of time? The T mark did not line up to the timing mark when I went to adjust the valves again. I am at a loss. Would not having the baffle on the main jet cause issues like this. When I pulled the carb apart I saw that mine was missing. Thank you in advance for any guidance you can give. I have been researching the forums to find the answers myself but am coming up without any fresh ideas. Thanks
rem28ga is offline  
Sponsored Links
Advertisement
 
post #2 of 22 (permalink) Old 01-26-2013, 08:47 AM Thread Starter
Member
 
rem28ga's Avatar
 
Join Date: Jan 2013
Posts: 31
Also have installed new plug. When I went to adjust valves the flywheel kept lining up on f mark, not the t. Is there anyway to adjust the float on these carbs? Thanks
rem28ga is offline  
post #3 of 22 (permalink) Old 01-26-2013, 08:55 AM
Super Moderator
Supporting Member
 
TRX2fiveO's Avatar
 
Join Date: Jun 2009
Location: East coast North Carolina
Posts: 18,073
Liked: 316 times
Garage
welcome to the forums. no way to adjust the float. if you take a pull bar and a 17mm you can hold the flywheel on the "T" make sure you are adjusting on the compression stroke too. try that and get back to us

"MOOSE WAGON "
00 TRX400EX aka "MOOSE ROCKET"
91 TRX250X aka "MOOSE WAGON" RETIRED
96 Polaris 400L sport (Mrs. Moose Ride)
07 Suzuki LTZ250 (Sons)
96 Polaris 250 Trail Blazer (daughters)
06 TRX450ER aka === Under construction

Progress and Help
PM FOR MANUAL HELP
JETTING
Service_Manual_Downloads
2000_400EX_Build
400EX_Pivot_Bolt_
TRX2fiveO is offline  
Sponsored Links
Advertisement
 
post #4 of 22 (permalink) Old 01-26-2013, 09:20 AM Thread Starter
Member
 
rem28ga's Avatar
 
Join Date: Jan 2013
Posts: 31
Thank you! That is what I ended up doing yesterday. I re-adjusted again just to make sure.
rem28ga is offline  
post #5 of 22 (permalink) Old 01-26-2013, 11:00 AM
Super Moderator
Supporting Member
 
TRX2fiveO's Avatar
 
Join Date: Jun 2009
Location: East coast North Carolina
Posts: 18,073
Liked: 316 times
Garage
The decompression needs the.bracket to be properly adjusted but that shouldn't affect it running? I've heard if it being deleted. I think your issue is in the idle circuit if you didn't remove the fuel screw and clean the orfices related to that area then you are shooting yourself in the foot. You need to remove the carb and dissemble it completely removing all the o-rings spray it out really good and blue out out with compressed air.

"MOOSE WAGON "
00 TRX400EX aka "MOOSE ROCKET"
91 TRX250X aka "MOOSE WAGON" RETIRED
96 Polaris 400L sport (Mrs. Moose Ride)
07 Suzuki LTZ250 (Sons)
96 Polaris 250 Trail Blazer (daughters)
06 TRX450ER aka === Under construction

Progress and Help
PM FOR MANUAL HELP
JETTING
Service_Manual_Downloads
2000_400EX_Build
400EX_Pivot_Bolt_
TRX2fiveO is offline  
post #6 of 22 (permalink) Old 01-26-2013, 11:47 AM Thread Starter
Member
 
rem28ga's Avatar
 
Join Date: Jan 2013
Posts: 31
I have all broken down again. I will boil it for a bit and then blow it out. Hopefully that will dislodge anything still hanging up in there. I will let you know how this shakes out. Thanks for your help
rem28ga is offline  
post #7 of 22 (permalink) Old 01-26-2013, 04:31 PM
Super Moderator
Supporting Member
 
TRX2fiveO's Avatar
 
Join Date: Jun 2009
Location: East coast North Carolina
Posts: 18,073
Liked: 316 times
Garage
Put some lemon juice in the water

"MOOSE WAGON "
00 TRX400EX aka "MOOSE ROCKET"
91 TRX250X aka "MOOSE WAGON" RETIRED
96 Polaris 400L sport (Mrs. Moose Ride)
07 Suzuki LTZ250 (Sons)
96 Polaris 250 Trail Blazer (daughters)
06 TRX450ER aka === Under construction

Progress and Help
PM FOR MANUAL HELP
JETTING
Service_Manual_Downloads
2000_400EX_Build
400EX_Pivot_Bolt_
TRX2fiveO is offline  
post #8 of 22 (permalink) Old 01-26-2013, 10:02 PM Thread Starter
Member
 
rem28ga's Avatar
 
Join Date: Jan 2013
Posts: 31
I did just that. I boiled it for about three hours, lots of crap floating in the water after. I was amazed especially because I had used two cans of carb cleaner before. After boiling it I blew it out with the air compressor. Hopefully this will do the trick. I am hunting tomorrow, so hopefully Monday I can get it put back together and see if I got it clean. I really am looking forward to riding it. Kickstarting sucks though, I have been spoiled with mt kfx400!
rem28ga is offline  
post #9 of 22 (permalink) Old 01-26-2013, 10:55 PM
Senior Member
 
xxxfrankenstein406's Avatar
 
Join Date: Jan 2012
Posts: 175
dd you do a compression test?
xxxfrankenstein406 is offline  
post #10 of 22 (permalink) Old 01-27-2013, 05:42 AM
Super Moderator
Supporting Member
 
TRX2fiveO's Avatar
 
Join Date: Jun 2009
Location: East coast North Carolina
Posts: 18,073
Liked: 316 times
Garage
Quote:
Originally Posted by rem28ga View Post
I did just that. I boiled it for about three hours, lots of crap floating in the water after. I was amazed especially because I had used two cans of carb cleaner before. After boiling it I blew it out with the air compressor. Hopefully this will do the trick. I am hunting tomorrow, so hopefully Monday I can get it put back together and see if I got it clean. I really am looking forward to riding it. Kickstarting sucks though, I have been spoiled with mt kfx400!
The acid in the lemon juice breaks down the contaminates. Personally I use a small HVLP gun filled with Laquer Thinner turn the spray pattern to a point and let her rip plus makes the carb look newer. lol

"MOOSE WAGON "
00 TRX400EX aka "MOOSE ROCKET"
91 TRX250X aka "MOOSE WAGON" RETIRED
96 Polaris 400L sport (Mrs. Moose Ride)
07 Suzuki LTZ250 (Sons)
96 Polaris 250 Trail Blazer (daughters)
06 TRX450ER aka === Under construction

Progress and Help
PM FOR MANUAL HELP
JETTING
Service_Manual_Downloads
2000_400EX_Build
400EX_Pivot_Bolt_
TRX2fiveO is offline  
Reply

  Lower Navigation
Go Back   Honda ATV Forum > Honda Model Specific Discussions > Honda TRX

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Honda ATV Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome