Question about 2003 Hyosung GV 250 Aquila
I bought it 2 months ago , i had a full service from first week but nothing change , i took it to another mechanic ,still couldnt find the problem.its feel that i have the problem just before i change from third to fourth gear and from second to third gear,its when i need more power -acceleration but on first gear and last gear no problem,it works perfect. it sound a lot like this one https://www.youtube.com/watch?v=aAt4ailDkLk 1 min and 14 seconds until 1 and 20 seconds on the video
Hey Buddy, you may want to check your gas tank overflow vent or tube to make sure it isn't plugged therefore not allowing air to enter your tank as you burn fuel, some of these vents are located on your gas cap, if you can't find it, ask a mechanic to show you where it is.
Posted on Oct 25, 2017
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Check the tank from inside- if it was not fully loaded with gas it tends to corrode during winter . Corrosion forms send like debris which creates problems for injectors.
Posted on Jan 20, 2009
More likely it is a slightly bent shift fork not fully engaging into second. The clutch and bearings are not suspect. Remove your foot from the shift lever then go full throttle in 2nd. Those new riding boots may be doing the magic unconsciously. Adjust the shift lever height if that is the problem.
Posted on Apr 30, 2009
Yes, change second gear and the gear it meshes up with. This is the voice of experience talking. Whatever caused the tooth to break applied the same pressure on the mating gear. That made the meshing gear weak such that as soon as pressure is on it again, it will break a tooth or two right away. See diagram below showing pinion gears, wheel gears and slider gears.
This is the transmission and clutch. The ENTIRE engine tears down, top end, clutch, shifter, kick starter, flywheel and electrics, forks and drum, crankshaft etc. Needed tools are a flywheel puller, case splitter, torque wrench, impact driver and circlip pliers. This is not a beginners project. You can get a factory service manual and give it a try but I don't recommend it. The service manual may or may not have a power transmission diagram. I don't have a diagram for this engine.
Posted on Jul 26, 2009
if all other gears shif fine, only thing possibly wrong is the shifting mechanism, like bent fork, washer on shaft in the wrong spot etc most likely during overhaul, something was not put back in the right place
Posted on Aug 01, 2009
Tips for a great answer:
1-2 Shift Solenoid Valve
3-4 Shift Valve Bore Plug
Burned, slipping, missing
4th Servo Cover
4th Servo Pin
4th Servo Piston
4th Servo Seals
Rolled, cut or damaged
Slipping or No Fourth Gear
Slipping or No Fourth Gear Checks
DEFINITION: A large engine RPM increase is noted in fourth gear, Drive range, with little or no vehicle forward speed increase. First, second, and third gear operation are normal. Shifts into fourth gear are soft or do not occur. Fourth gear ratio is 0.705:1.
Automatic Transmission Fluid Level
Low fluid level
Transmission Main Line Pressure
Low transmission main line pressure
Oil Filter Assembly
• The oil filter assembly (100) is missing, plugged, or damaged.
• The oil filter seal assembly (101) is missing or is damaged.
Control Valve Body Assembly
• The 3-4 shift valve (362) or the 4-3 manual downshift valve (360) is stuck or binding.
• Debris is found in the passages of the control valve body (301) or of the control valve body spacer plate and gasket assembly (396)
Case Cover Assembly
Distortion or damage occurs at the manual valve (404) or at the case cover (401), causing PRN oil leak.
Driven Sprocket Support Assembly
A plugged third clutch oil passage in the driven sprocket support assembly (609)
Fourth Clutch Assembly
• The clutch plates (500-502) are worn, damaged, or misassembled.
• A missing or not seated fourth clutch spring retaining ring (601)
• A damaged spring assembly (602) or piston (603)
• Worn or damaged fourth clutch piston seals (604, 605)
Third Clutch Sprag Assembly
• The sprag (720) was misassembled or backwards on the inner race (661).
• A damaged third clutch sprag assembly (653, 661, 719-721)
Dec 06, 2015 | Pontiac Cars & Trucks
Aug 06, 2014 | Volkswagen Golf Cars & Trucks
Jun 08, 2014 | 1998 GMC Sierra
Nov 26, 2013 | Cars & Trucks
Oct 30, 2012 | Cars & Trucks
Mar 01, 2012 | 2005 Chevrolet Aveo
Dec 30, 2010 | 1998 Toyota Corolla
May 26, 2010 | 2005 Dodge Caravan
Oct 13, 2009 | 1997 Chevrolet K1500
Jul 16, 2009 | 2002 GMC Sierra 1500
Jun 30, 2012 | 2003 Hyosung GV 250 Aquila
109 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: