Question about 1988 Yamaha XV 535 Virago DX

1 Answer

Flooding out front cyl with fuel....rebuilt carbs with new seats and metering valve...floats checked out ok.....did not remove top covers and diaghram....hate to even ask but .....could a bad valve cause such a thing? it does not pop or backfire..was a high speed run before problem-after slowdown only rear cyl working.. Thanx for any thoughts or ideas ... Layne

Posted by on

  • Dick
    Dick May 11, 2010

    You're already posted the same question here, post a comment there if you have anything to add. Or try premium chat if you're in a big hurry.

×

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 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.

  • Yamaha Master
  • 767 Answers

Theres a problem to the front carburator thus the flooding, the float pin is not sealing of the fuel supply once the bowl is full.You will have to reset the float, remove the bowl and operate the float manually( by your fingers lifting it to seal) letting the fuel to flow, if it stops thn for sure the float needs adjusting, if it doesnt stop the flow thn the pin is not sealing,you may have to replace the float pin.
Hope this helps!.


Knight (Yamaha seca XJ750R 1981)

Posted on Apr 17, 2009

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:

2 Answers

86 Honda CBX750F,Would a inline glass fuel filter solve my flooding problem?


the shut off valves for the float bowl are probably stuck-or not seating properly --remove the carbueretors and remove the float bowls ( the bottom covers ) - the valves are over the floats, near the pivot point -remove the pins that hold the floats - and remove the floats - the valves may be attached to the floats with a small klip --inspect and clean the valve and the valve seat

Nov 29, 2013 | 1985 Honda CBX

1 Answer

Flooding


A) I didn't know Yamaha makes a Desktop PC.

B) So far, I don't know of any desktop computers that use an internal combustion engine, and use a fossil fuel to run it.
Hope not because this is going against the grand scheme of things, lol!

C) Fresh top end, and a carburetor fuel induction system; plus flooding out?

1) Float level is set too high.
Readjust level. Worked fine before top end job?
Maybe it got bumped.......umm, like dropped.

Carb was rebuilt too? Float level is not correct.

2) The tip of the float needle is Neoprene. As such it can be damaged from a fall.
It can also be deformed from having too much pressure applied to it, when installing.

3) Float needle seat has come loose from carb main body.

4) Float needle seat is damaged. Tightened too tight, etc.

5) Junk in fuel tank has made it's way into between float needle, and float needle seat.

6) Float needle hair spring clip, was not properly installed on float.
(If used)

7) Carb was Not rebuilt, has sat while top end was done. This took some time, like weeks, months, to get too.
All the cr@ppy additives in the gasoline, has collected in the float bowl; and causing float needle to not set correctly in float needle seat.

Regards,
joecoolvette

(Now watch. You'll come back with a voice like Stimpy, and state;

"joecoolvette, you stink-ing idio-t!
I was referring to my Yamaha desktop computer. It's spraying gas out of the carburator. You have no idea of what you're doing.

Signed, Stimpy)

Mar 26, 2013 | Computers & Internet

1 Answer

I rebuilt the zama carb but it will not run for more than 30 or 40 seconds what did i do wrong


There are plenty of things you may have inadvertently done wrong, start first by checking fuel to the carb, replace the fuel filter in the tank, check the fuek hose up to the carb for signs of leaks, if all ok, re check the carb, on the pump side it is very importent the diaphram goes against the carb body followed by the gasket and the cover, this is because there will be two small flaps on the diaphram that act as non return valves, so must be against the carb body, there will also be a filter under the diaphram, this should be replaced, on the metering side of the carb it is very importent that the gasket goes against the carb body followed by the diaphram and cover, this is because the gasket is used as a spacer if not there the diaphram will be too close to the metering lever and it will flood, under the diaphram will be the metering lever, needle and spring, make sure this all moves smoothly, the metering lever should be level with the sides of the carb body, there will also be core plugs pressed into the base of the carb, these will be covering the jet holes, dirt can accumalate under these, however you need to pearce the plugs to remove them, and replace with new.

Aug 22, 2011 | Homelite Garden

1 Answer

Recently bought 2005 Hyosung GV250. Front cylinder seems to be flooding badly, fuel sprays from exhaust!!! Have checked and cleaned carb and replaced plugs. Still not working


the float is still not seating to stop fuel into the cyl also if the peacock is dirty or bad it will let fuel leak when off the tanks are famous for rust which puts juck into the needle with the float not letting it seat it only takes a micro grain to not let it seat i would clean the carb again start with carb cleaner first running it hard spraying to see if it clears , i had the same issue and played with it and it cleared up though now i need a screw that broke where the needle from the rubber pump goes which isnt sold as a part looks like homemade modification action or $400 to $600 for a new carb

Aug 16, 2011 | Hyosung GV 250 Aquila Motorcycles

1 Answer

Replaced diaphram fuel valve and carbs ..cannot open fuel valve all the way without flooding engine. Excess fuel poars from carb assembly. Could there be some sort of problem with the vacuum system that...


I would say the problem is in your carbys, with the float levels, or a sticky needle and seat. If you open the fuel valve, fuel will flow into the carbys, ans shut off once the correct level is reached. I think the problem is in your carbys, not the fuel valve. I would remove the carbys, take the bowel off the bottom, and check the needle and seat, and float levels. It is not recomended to change the float levels from standard.

Apr 27, 2010 | 1993 kawasaki VN 750 Vulcan

2 Answers

Kawasaki GT750 Fuel dumping


Sounds like the float valve is stuck in the carby and allowing fuel to keep flowing.

Give the carby bowl a light tap with some wood to free up the float valve. You may have to pull the carby off and have a look if that doesn't help. Fuel cannot bypass the float valve in normal operation.

Jul 25, 2009 | kawasaki GT 750 Motorcycles

1 Answer

Yammy rd 200 1978 inconsistent running


check the neddle valve seats under the float bowls,may find that theseats are not sealing,to test,take the carbs off the bike,remove the bowls ,compress the floats untill they are all the way up(simulates full bowl of fuel)then blow through the fuel inlet pipe,you should not be able to hear air passing throgh the valve if you can replace the valve seat and the needle valve,sorry cant remember point settings,long time ago since i worked on one of these

Jun 30, 2009 | 1978 Yamaha RD 250

1 Answer

Rebuilt carb which was setting idle for years,now the engine runs for 4-5 minutes and then floods thru valve cover vent tube. 5.5 hp b&s tiller


I would recheck the float to be sure it is move smoothly and easily in the bowl. if it doesn't, it can allow fuel to overfill the bowl and cause the problem you are having. After that the needle and seat are the next thing to check. hope this helps.

May 15, 2009 | Garden

2 Answers

Virago cyl flooding xv700 1984


let me tell you how i check to see if the float and needle valve is working properley in a carb. take the carb off git a hand pump off a out board motor. hose and all take the ends off put the suction end in a can of gas and the outlit end to the gas inlit on the carb. squeez liteley on the bulb that should let you no if the carb is leaking some ware. if not then you no for sure that the problem is some were else.goodluck davidbaxley.

Apr 17, 2009 | 1988 Yamaha XV 535 Virago DX

1 Answer

Toyota 22r carb leaks and floods


sounds like trash between needle valve and seat try tapping on side of float bowl, if not take off air horn ( top ) remove float clean needle valve and seat and bowl keep a eye out for trash

Mar 31, 2009 | 1984 Toyota Pickup Deluxe

Not finding what you are looking for?
1988 Yamaha XV 535 Virago DX Logo

331 people viewed this question

Ask a Question

Usually answered in minutes!

Top Yamaha Experts

dhnguyen

Level 2 Expert

281 Answers

Steve Sweetleaf
Steve Sweetleaf

Level 3 Expert

1144 Answers

Tony

Level 3 Expert

2600 Answers

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

Answer questions

Manuals & User Guides

Loading...