Question about 2005 kawasaki EN 500 Vulcan

1 Answer

My gas tank is building up excess pressure when the bike is on for a while or after riding only short distances. This causes a high pitched squeal when the pressure gets too high. If pressure is not released by opening the gas cap after riding, the bike leaks gas that backs up into the carbeurator and air filter (from what we can tell). What would cause the gas tank to build up so much pressure?

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 167 Answers

G'day.
The tank is building up too much pressure because the pressure relief valve in the gas cap is blocked.All gas caps are vented-(otherwise the tank has to be somewhere- like on Canadian models with fuel evaporative systems on them).
clear the blockage or replace the cap & you should be fine.
Under most roadbike gas caps is a cover held in place with two screws-remove them to dissasemble the cap & clear the blockage in the cap vent
If yours is a Canadian(maybe US models are the same)-model then the problem is in the fuel evaporative system. Check out this link.
http://www.mrcycles.com/fiche_section_detail.asp?section=365110&category=Motorcycles&make=KAWASAKI&year=2005&fveh=8485

Hope this is helpfull.
Kind regards Andrew Porrelli

Posted on May 17, 2011

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
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.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

4 Answers

What does code PO453 mean


the evaporative emission system (EVAP) control system pressure sensor has sent high voltage to the ecm or engine control module and triggered this code either the purge valve located under the car by the gas tank has gone bad, or the charcoal canister has become gas soaked and is pressurizing from gas fumes, or the sensor or wires have shorted , there is also a secondary valve located und the cover of the intake that should also be checked for shorts that can trigger this code but usually it is the one under the car that goes out 9 out of 10 times it is from fuel being burped into the evap canister or charcoal canister from the gas tank which is caused from overfilling the tank or mid day heat of 90 or better with a full tank

Aug 30, 2014 | 2005 Cadillac CTS

2 Answers

Gas is being forced out of the fuel tank when the vehicle is running.


A defective fuel pressure regulator (located on the fuel rail) may have blown the gasket on the
fuel pump (located in the gas tank).
Another thing to check - the car's computer may have posted
an error code from the fuel tank pressure sensor.. I'm not sure, but if this sensor shows pressure
building in the fuel tank, rather than let it explode its seals, the sensor may intentionally leak fuel
in order to relieve the internal fuel pressure build-up inside the fuel tank.

On the fuel rail (supplies fuel to the fuel injectors on top of the engine), there will be a Schrader valve,
which is your connection to connect your Fuel Pressure Gauge to your car's fuel rail.
Give it a check, but put a shop rag around the connector as your screw it in - fuel (and fuel
pressure) will leak as you install the fuel gauge.

You may get computer diagnostic codes P0158 or P0159 - see below for interpretation.
Note that the PCM is the Powertrain Control Module, which is the car's computer.
Also "TP sensor" is the throttle position sensor.
---------------------------------------------------------------------------------------------------------------------------------------
Trouble Code: P0158

Meaning: HO2S-22 (Bank 2 Sensor 2) Circuit High Input

Possible Causes:

Fuel system is too rich (fuel pressure too high, fuel pressure regulator leaking, or one or more fuel injectors sticking/leaking)

HO2S element is silicon, water or fuel contaminated

HO2S signal circuit is shorted to system power (B+)

HO2S signal tracking (water intrusion) in the connector causing a short between the HO2S signal and heater power circuits

PCM has failed

----------------------------------------------------------------------------------------------------------------------------------------
Trouble Code: P0159


Meaning: HO2S-22 (Bank 2 Sensor 2) Slow Response

Possible Causes:

Exhaust leak present in the exhaust manifold or exhaust pipes

Fuel system is too rich (fuel pressure too high, fuel pressure regulator leaking, or one or more fuel injectors sticking/leaking)

HO2S element is silicon, water or fuel contaminated

TP sensor element broken (can cause false acceleration event)

Mar 18, 2011 | 2001 Cadillac Catera

2 Answers

Tire pressure in manual is 21psi, front and 22psi for rear. Do I need to increase this for on road riding? Pressure seems low for on road riding?


Here's my take on tire pressures and when they need adjusted, I wrote this a while back for someone with a Honda African Twin, so this should help:


Manufacturer's recommendation – Short distance city riding below 100kph. Light off-road use ie. Small rocks, gravel. If the weather/road conditions vary a lot.


30% above recommended pressure – High speed road use. Long distances in warm weather on good quality roads. Go 40% if the conditions are the same but the bike is fully loaded with carriers.


15% below recommended pressure – Short distance riding in cold winter temps. Short distance on wet roads. Off-road, average gravel/rocks and some wet mud.


40% below recommended – Slow off-road riding in very loose dirt, sand, with lots of rocks. Tires will heat up quickly if the pace is picked up which will loose grip and cause accelerated wear.


60% below recommended – Very slow, loose dirt, deep sand (dunes). If tires slip on the rims you need to increase pressure.


My mantra is all about keeping a close eye on tire pressures and adjusting them to suit the conditions rather than keeping strictly at the manufacturer's settings. Starting out my riding career on a BMX, tire pressures can be the difference from landing a perfect jump and falling on your face. Therefore, with a motor attached, it is even more important to get it right – personally I think the 'feel and grip' is more important than the pressure number – regardless if that causes tire wear.


Hope this helps and you vote for me :)

Jul 01, 2010 | 1995 kawasaki KLE 500

3 Answers

Replacing gas cap caused pressure build up in tank


The tank has to be vented, you have a drain line on the overflow that allows air to come in, but it still has to go out, there is usually a tiny hole in the cap somewhere, He may have clogged some of the lines to the tank with the sealant, what did he use?? Most tanks have a map pasted on them where all the lines go, Find one and see what is missing or wrong, if you have to seal the tank, get it off, dry it out, wash it soap and water, get some POR brand tank sealer, works great, and pour it in there , follow their instructions, hope this helps.

Apr 24, 2010 | 1996 Honda VF 750 C Magna

2 Answers

Unable to put gas in at at gas pump


SOUND LIKE EVAP SYSTEM FAILURE.CAUSING EXCESSIVE FUEL PRESSURE VAPORS BUILT UP IN FUEL TANK.TAKE IT TO DEALERSHIP THEY HAVE TO USE DIAGNOSTIC EQUIPMENT TO FIX.THIS IS A LITTLE TRICK TO GET GAS IN TANK BACK OUT SPOUT A LITTLE NOT MUCH TO LET VAPORS ESCAPE WHILE YOU PUMPING GAS.YOU NEED TO FIX.FUEL PRESSURE VAPORS WILL BUILD UP ENOUGH TO BLOW UP FUEL TANK ESPECIALLY ON HOT DAYS.

Mar 06, 2010 | 2001 Chevrolet Blazer

1 Answer

High-pitched squeal/whistle noise from range


Noise went away by itself. No root cause found. Please remove this posting, thanks.

Dec 04, 2009 | Maytag MGC6430 Gas Cooktop

1 Answer

Bandit idles HIGH when hot Just bought the bike! My bandit 1200S, 1997, runs smoothly when the engine is cool. But at hot temps when the bike warms up, the idle increases to 3000rpms. It doesnt want to...


OK.... firstly change the fuel cap, the tank needs to be vented correctly so pressure will equalise. Normally a rich fuel concentration will cause the engine to die not run high. From what your telling me it sounds like the throttle cables are not adjusted properly, if they are too tight the rpm's will not come back to idle. if this is the case you might be able to twist the throttle the opposite direction to lower the revs at idle. For the excess fuel problem, it could be what you say about the fuel cap, another thing will be the Needle and Seat might need changing or the float levels are not adjusted correctly. Whilst your there fit a good inline fuel filter, it will stop problems in the future.

Nov 12, 2009 | 1997 Suzuki GSF 1200 Bandit S

1 Answer

Gas smell from car after driving


busted fill spout as if gets hot pressure builds in tank causing the smell

Jan 05, 2009 | 2002 Chevrolet TrailBlazer

Not finding what you are looking for?
2005 kawasaki EN 500 Vulcan Logo

482 people viewed this question

Ask a Question

Usually answered in minutes!

Top kawasaki Experts

Arnie Burke
Arnie Burke

Level 3 Expert

4514 Answers

yadayada
yadayada

Level 3 Expert

75005 Answers

Gino Cussen
Gino Cussen

Level 2 Expert

216 Answers

Are you a kawasaki Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...