Question about Motorcycles

1 Answer

My gxv-620 honda engine backfires through the carb,and wont take the gas

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Motorcycles Master
  • 3,799 Answers

The usual cause of this is the ignition timing. Use a timing light and check with the engine running.

Posted on Oct 30, 2012


6 Suggested Answers

  • 2 Answers

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

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.
Good luck!

Posted on Jan 02, 2017

  • 1066 Answers

SOURCE: runs great until hot.

put some fuel cleaner in the fuel tank and replace the spark plugs.

Posted on Mar 22, 2009

  • 8 Answers

SOURCE: Engine won't start but backfires every so often,

Sounds you have a problem with the carb float and needle assembly (i.e. the float and needle are not stopping the flow of fuel into the carb even when it is full as they should).

Backfires are a symptom of too much fuel in the combustion chamber typically. Try turning your shut off valve to "off" and let it sit for a day - then try to start it with the valve still off. Ideally it will start and run for a bit - until it uses the fuel available in the carb. If not - provide more detail.

Posted on Sep 10, 2009

  • 76 Answers

SOURCE: have a honda crf100f 4cycle got spark wont start,


Posted on Jan 29, 2010

  • 12 Answers

SOURCE: my honda cbr 600 wont start and keeps backfireing

Check your plugs. If all four are sparking then your carbs are out of sync. They will need to be re-balanced.

If you are capabable in doing this job your self, you will need a screwdriver that fits your adjuster screws and a CarbTune Carb balancer.
Remove your tank and airbox.
You should see the flaps inside your carbs. These should open when you move your throttle.
Start on the outside carbs to get them balanced with the 2 centre ones.
To start, unscrew the adjusters all the way out. then screw them in until the 2 outer carbs move at the same time as the inner 2 carbs
Once this is done then adjust the centre balancer to syncronise the 2 left hand carbs to the 2 right hand carbs.
Now if you have done this correctly, all four carbs should open at the exact same time.
If you have a Carbtune balancer, remove the plugs from the top of your inlet manifold and plug in the hoses from the carbtune balancer.
Start the engine and adjust the screws until the weights inside the Carbtune balancer all read the same.
Once done, remove the balancer, replace the plugs into the inlet manifold, refit the airbox and tank and it should run so much better.

If your not 100% confident to unertake this job yourself, take the bike to your local dealer and ask to have the carbs balanced.

Posted on Mar 15, 2010

  • 2702 Answers

SOURCE: honda xbr 500 carb backfire

it could have a burnt out inlet velve or it may be the velve clearence is to tight check velve clearence first

Posted on Mar 17, 2010

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

I have a 1991 honda cr250r and it keeps fouling spark plugs and has lost power it wont rev up all it does is pop and backfire and most of the time just dies what could be wrong with it

Fouling is caused by incorrect fuel oil mixture, or too much gas (rich carb mixture, not enough air).

Pop and Backfire can be a few things. Bad ignition timing is my best guess. Also look at broken or badly sealing power valves.

Dec 24, 2015 | Honda Motorcycles

1 Answer

Choke not working on Honda GXV 160 for Muck Truck

Check the linkage on the carburator. Also loose mounting screws on the carb can cause a problem.

Oct 12, 2014 | Honda Vertical 5.5 HP OHV Engine 7/8 x...

1 Answer

750 honda maga wont start backfires water in the tank i think

if the tank is full add dry gas if not then remove all gas and add alchol and clean that way then refill with new gas . also the carb or injector will need to be purged

Mar 14, 2014 | 2007 Derbi GP1 125

1 Answer

GXV 160 Honda, spark plug very sooty, when pulling to start it fires back through carb, have reset valve clearances which were near good enough but wondered about timing or poorly seating valves

you need to do a cylinder leak down test. That will tell you if it is a valve, which one or if it is rings. Try a compression test too. 5 pulls should be 160 to 190 ish. If all that is ok check the carb to see why it is causing a rich running scenario

Jan 10, 2013 | Honda Gxv160 55hp 55 Hp 25mm Dia Lawn...

2 Answers

Engine wont start it backfires through the carb

Make sure the timing is correct. Backfiring is often caused by an engine out of time.
Good idea on the carb rebuild. It may be letting too much gas in.

Jan 15, 2012 | Cars & Trucks

Not finding what you are looking for?
Motorcycles Logo

Related Topics:

161 people viewed this question

Ask a Question

Usually answered in minutes!

Top Motorcycles Experts

Arnie Burke
Arnie Burke

Level 3 Expert

4742 Answers


Level 3 Expert

78267 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

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

Answer questions

Manuals & User Guides