Question about 2008 Honda CB 1000R

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Battery turns engine over, but doesn't fire... sparks and plug. o.k. then floods carburetor and plug

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  • Honda Master
  • 2,050 Answers

Sounds like a float sticking in your carburator, this will allow it to keep accepting fuel, overflowing the bowl.

Posted on Jul 14, 2009

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Posted on Jan 02, 2017

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I have a 79 New Yorker with a 318 it has a hard time starting we just replaced air filter,fuel filter and lines plugs, Roter and cap it floods real easy


The old chryslers are very touchy. It sounds like the float is stuck on the carburetor flooding the engine or it is stuck closed not allowing enough gas to get into the cylinders. Pull a spark plug and see or smell if there is gas on it.If so is there spark? You have solid state ignition I believe. Pull a spark plug wire off of a plug and hold with insulated pliers and see if you are getting spark to the plugs. The engine needs air, fuel and spark to run. Check firing order for the wires 1,8,4,3,6,5,7,2 is the firing order. That should get you started. Let me know if you need more troubleshooting.

May 11, 2017 | Cars & Trucks

3 Answers

Why won't it start?


it is flooding . turn off the choke and remove the plug
dry the plug and pull the rope about 10 times to blow all excess fuel ot of the system
refit plug and try it again

May 02, 2015 | Garden

1 Answer

Took out the chain tensioner and oiled it reinstalled it and turned the motor backwards two turns but fired up the bike with plugs removed now with plugs now installed and connected bike wont fire!!!


Hi, Terry and the usual suspects are:
1. Fuel tank empty.
2. Fuel supply valve/petcock turned off.
3. Fouled spark plugs.
4. Engine flooded as a result of overuse of the enricher.
5. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched.
6. Fuel valve/petcock or filter clogged.
7. Fuel line to carburetor or throttle body pinched or kinked.
8. Carburetor float stuck.
9. Fuel injectors clogged.
10. Severely discharged or damaged battery, you need 12.5 volts or better and be able to pass a load test if necessary.
11. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
12. Loose or corroded wire connection at the coil, battery or plug between ignition sensor and CDI box.
Spark plug cables in bad condition and shorting check for leakage in the dark, cable connections loose, or connected to the wrong cylinders.
13. Ignition timing incorrect due to a faulty MAP, CKP, O2, TPS, sensors.
14. Faulty neutral, clutch lever, or kickstand safety switch.
15. Faulty fuel pump or fuse or relay.
16. Faulty CDI box.
17. A stuck bent or burnt valve.
18. Tip over sensor needs a reset.
19. Check for engine trouble codes.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
Yamaha Diversion won start
Scooter Troubleshooting Scooter won start All about Scooters
Yamaha 95 XJ900S Service Manual
OEM parts for Yamaha
Yamaha Diversion 900 Owner Manual

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Mar 25, 2014 | Yamaha XJ 900 S Diversion Motorcycles

1 Answer

2003 Suzuki Grand Vitara won't start engine


what engine, state engine size and country.
there can only be 3 ways, to fail.
bad engine (low compresssion, us the $20 tool at WOT and see over 170psi.
Bad spark
bad fueling.
just because spark coils (COPS?) work on other car , dont mean much.
what counts is your car , its a system.
the cops, have fast 5mS pulse when firing, you using a scope to see that?
Im so curious, why not to the time old test, use a real spark plug
attached to the COP end, spark plug shell grounded to engine metal
and crank, is spark good x4? or x6 if V6 (engine NOT STATED)
is it? then spark is good, leaving fueling.
do not touch the spark plug cranking, it can hit 100,000 volts.
I use a ground strap on the spark plug casing, hands free, or you can be hurt bad, by the spark or when you jump and cut arm backing off
on cars that flood, is it flooding?
I found my engine compression good, then found all 4 sparks fire good.
so i pull the fuel pump relay. killing fueling.
i then use "test fuel" to start engine (again, text book tests)
I use the new CRC brand of test fuel with top end oiling.
i spray it in the plenum, and it starts.
if the spark plugs are bad, (part oftune it up)
it may not start if flooded,
use WOT at the throttle (cuts fuel) and start any flooded engine.
if the spark tips are black and stink of raw fuel (wet with fuel)
that means flooding.
pull the fuel pump relay ,test fuel runs for 3 seconds. each time.
3 second spray max. each time.
if that works out, then find reason for flooding if flooding.
if not flooding, you find dry sparks.
then trouble shoot no fuel.
fuel pressure not near 30 PS?
fuel pressure too high say, 60, it will flood for ever.
there are only 3 tests.
and 4 counting wet /dry sparks.
the tests done, will put you on the correct path every time.
no guessing, no swapping parts to other cars.

May 28, 2013 | 2003 Suzuki Grand Vitara

1 Answer

2006 Yamaha Vino 125 scooter turns but doesn't start


Hi, Anonymous and the usual suspects are:
1. Fuel tank empty.
2. Fuel supply valve/petcock turned off.
3. Fouled spark plugs.
4. Engine flooded as a result of overuse of the enricher.
5. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched.
6. Fuel valve/petcock or filter clogged.
7. Fuel line to the carburetor or throttle body pinched or kinked.
8. Carburetor float stuck.
9. Fuel injectors clogged.
10. Severely discharged or damaged battery you need 12.5 volts or better and be able to pass a load test if necessary.
11. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
12. Loose or corroded wire connection at the coil, battery or plug between ignition sensor and CDI box.
Spark plug cables in bad condition and shorting check for leakage in the dark, cable connections loose, or connected to the wrong cylinders.
13. Ignition timing incorrect due to a faulty MAP, CKP, O2, TPS, sensors.
14. Faulty neutral, clutch lever, or kickstand safety switch.
15. Faulty fuel pump or fuse or relay.
16. Faulty CDI box.
17. A stuck bent or burnt valve.
18. Tip over sensor needs a reset.
19. Check for engine trouble codes.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
Scooter Troubleshooting Scooter won start All about Scooters
Scooter won start
Yamaha YJ125S Service Manual
OEM parts for Yamaha
Yamaha VINO 125 Owner Manual

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e


Oct 03, 2012 | 2006 Yamaha Vino 125

1 Answer

Turn key to start and nothing happens. All lights are on, battery good. Doesn't turn over---nothing. Switch or starter or some kind of relay??? HELP!!!


For 1999 Buick LeSabre - but you took #1 off the list, so here's the whole "failure to start" list:

Priority Action Part Type Cause
1 Inspect Battery Battery Discharged or Faulty.
2 Inspect Battery Cable Corroded, Broken, Shorted or Poorly Connected Battery Cable.
3 Inspect Distributor Cap Distributor Cap Cracked or Burned.
3 Inspect Fuel Filter Clogged or Dirty Fuel Filter.
5 Inspect Ignition Coil Faulty Ignition Coil.
6 Inspect Wireset Worn, Damaged or Faulty Spark Plug Wire(s).
7 Inspect Spark Plug Incorrectly Gapped or Fouled Spark Plug(s).
8 Inspect Starter Starter Motor Faulty.
9 Inspect Fuel Pump Low Fuel Pressure.
10 Inspect Starter Relay Faulty Starter Starter Relay
11 Inspect Fuel Pump Relay Faulty Fuel Pump Relay.
12 Inspect Fuel Injector Pressure Regulator Faulty Fuel Injector Pressure Regulator.
13 Inspect Ignition Switch Improperly Connected or Faulty Ignition Switch.
14 Inspect Starter Motor Faulty Starter Motor
15 Inspect Fuel Injector Dirty or Worn Fuel Injectors.
16 Inspect Fuel Pump Strainer Clogged or Dirty Fuel Pump Strainer
17 Inspect Engine Control Computer Incorrect Operating Information Being Delivered and Sent From The EEC.
18 Inspect Fuel Tank Fuel Tank Empty.
19 Inspect Carburetor Carburetor Flooded or Faulty Choke.
20 Inspect Distributor Rotor Distributor Rotor broken, burned contacts, or loose
21 Inspect Distributor Worn, Loose, or Incorrectly Installed Distributor.

Sep 12, 2011 | 1999 Buick LeSabre

1 Answer

I had this saw tuned up a few years ago and put it away. I added new fuel (40 to 1 mix) took out the spark plug and checked the gap.025 and didn't even have to clean it. I set the choke to full, made sure...


I don't know the plug number. Off the shelf chain saw plug from small engine repair shop will replace existing plug.

First of all, are you getting spark?
Take out plug. Put spark wire on plug. Hole plug by spark wire. Touch metal threads of spark plug to metal part of engine block. Metal to metal. Pull cord. Look for spark between metals. If there is no spark, then spark coil is bad.

Look at exhaust port. Is there anything that would stop the exhaust from escaping?

Can you get to fuel line running into carburetor? See if gas makes it all the way to the carburetor.

Can you get to the air filter? Is it dirty? Can you spray WD-40 directly into carburetor. A saw that has good exhaust, spark and compression will fire on WD-40.

If your engine can fire on WD-40, but will not stay running, then carburetor is suspect. Maybe gum out will work. Try to keep the engine going on WD-40 and see if that opens the carburetor.

If you can keep engine going on WD-40, that takes both hands ... use your third hand to move choke and throttle levers and see if the engine can start on its own.

Upvote if this information helps. Thanks for the feedback.

Oct 15, 2010 | McCulloch Garden

1 Answer

Bought unit new last summer. Used it once last summer and once this year. It started fine both times. Today, it will not crank. I have replaced the spark plug, checked the air filter (it is clean), gas...


Unable to crank? Do you mean unable to start?

If you leave gasoline inside tank over long period of time, that will 'gum-up' and ruin carburetor.
To prevent problem, put additive in gasoline or empty gas from tank:: under gas tank should be a hex bolt that holds up gas filter > loosen bolt and drain gas.

Starting the engine:
Take off air filter and spray WD-40 directly into carburetor.
Start engine, engine should fire on the WD-40 accelerant.
If engine fires but does not keep running, try spraying WD-40 into carburetor continuously to see if you can keep engine going.
If engine stops each time after it no longer gets WD-40, then carburetor is bad or gasoline not getting to carburetor or gasoline is bad.
Try fresh gasoline.
Do not turn small engine on side or upside down or oil will get into carburetor.

Check gas supply: Go to gas filter under gas tank. Pull loose rubber hose that connects to carburetor and see if gas comes out rubber hose.
If gas is flowing to carburetor, then carburetor is gummed up.
Small engine repair might suggest 'gum out' or have other suggestions ... but you may need a new carburetor

If engine will not fire on WD-40
If engine will not fire on WD-40 at all, then spark coil may be bad or exhaust port is clogged
Check screen that covers exhaust >> is it covered with carbon and dirt or can air pass through it easily?
Check spark
Remove spark plug
Put spark wire back on spark plug
Hold spark plug by rubber spark cap so hands don't touch metal part of spark plug
Touch spark plug threads against hole where spark plug was removed >>> metal to metal so it conducts electricity
Pull start cord and look for sparking between spark plug threads and metal of engine (don't look at the spark gap ... look where metal meets metal
If you have no spark, the spark coil is bad >> time for estimate from small engine repair shop or get your part number and order replacement

Oct 13, 2010 | Craftsman Garden

1 Answer

Stihl st410 , after first pull it fires then turn...


Remove the carburetor and open the lower chamber--check the condition of the diaphragm and fuel metering valve--either of which can cause flooding. The diaphragm should be flexible and not cracked or have holes in it. The metering valve point should be in good condition. Go to: http://www.drystacked.com for a 12 page article on Walbro brand carburetor theory and troubleshooting. This information applies to nearly all saws even with other brands of carburetor. When you have the carburetor installed, remove the spark plug, open the throttle fully, choke and ignition switch off, then pull the engine through to expel the excess fuel from the engine. Reinstall the plug and attempt to start normally. Hope this helps!

May 17, 2010 | Garden

1 Answer

Engine floods,gas dripping out of carburetor,any idea what is causing this? Zama carburetor.


Obviously fuel is flowing but not being ignited. Check spark plug and replace with a new one, then check for spark using a spark testing tool if still having problems. You need three things to get it to fire: fuel flow, spark, and compression... Hopefully the motor still has good compression, but check for spark problems first.

Mar 16, 2009 | Mantis 2-Cycle Tiller

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