Question about GAS Motorcycles

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Kodiak atv 700 wont start, has good spark, gas to carb, worked fine till I parked in garage, thereafter it will not fire a shot although it turns over; any suggestions ?

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  • Contributor
  • 47 Answers

Try changing the gasoline. It will go bad if it sets for a while. I once bought a motorcycle for $75 because the guy couldn't get it to start. I changed the gas and it started right up.

Posted on Feb 19, 2016

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Posted on Jan 02, 2017

  • 60 Answers

SOURCE: Magna 750 carb bowl blocked

sorry but you're going in. the float needle sound like they are plugged. the best way to go is to pull the carbs and clean them out. Don't adjust anything! Then I would recomend installing an inline fuel filter

Posted on Jun 21, 2009

ollie reece
  • 1167 Answers

SOURCE: I have a 2004 Husqvarna SMR450 always been very

you have too much fuel going into to cylinder if backfiring on carb there are 2 screws one for idle and one for mixture the mixture screw is the one you want turn this in 1/2 off turns or more if doesnt help this picture will help buddye738b4f.jpg

Posted on Sep 08, 2009

  • 9 Answers

SOURCE: i have a 110cc chinesse built atv. i got gas in

These engines are based on the awesome Honda design. Unfortunately, they do not have the same quality. If you verify there is fuel getting to the cylinder and there is also spark, you need to verify compression. One of the tendencies of these engines is the valves will actually tighten as they wear in. This can cause the valves to open prematurely which causes all kinds of starting issues. Check you compression and run a leak-down check to see what the compression portion of your engine looks like.

If you need to adjust your valves, do this with the engine cold and spark plug out.

  • Remove the valve caps (I believe these are 17mm and they are located on top and bottom of the cylinder head.) There may be a little oil come out of the lower (exhaust) cap.
  • Remove the left side cover. This is left side if you are riding the bike. This is the stator side and there should be no oil in this part of the engine. This will also allow you to turn the engine and align the piston with top dead center.
  • Rotate the engine counter clockwise until the alignment marks, sometimes indicated by a "T" are aligned with the mark on the case. If both valves are closed, you should be at top dead center. If they are not, make one more rotation.
  • Use a feeler guage to check clearance between top of valve and rocker arm.
  • I believe you will need to use a 10mm wrench to loosen the adjuster lock on the rocker arm. Once loosened, the adjuster will screw up or down as needed.
  • If needed, adjust the intake valve to:.05-.09mm and the exhaust valve to: .11-.15mm.
  • Once adjusted reverse the process.
If your valves are good to go and you are still having this problem. Remove the flywheel and verify the alignment key has not sheared on the crankshaft. The ignition timing on these Chinese engines is not adjustable, but can be off significantly if this key is sheared. I hope this is somewhat helpful.

Posted on Nov 09, 2009

  • 1584 Answers

SOURCE: My 2003 yamaha wolverine wont start. I cleaned the

Have you checked the choke operation?? Must have choke to start.

Posted on Dec 20, 2009

  • 9 Answers

SOURCE: 2006 Yamaha grizzly(60 hours) . Was working fine

Did you check spark before or after the spark plugs? Replace the plugs (or at least check their gaps). Also remember, you need three things for ignition: air, fuel, spark. You've been checking fuel and spark, but not mention of decent air flow. Is your air filter plugged?

Posted on Aug 23, 2010

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1 Answer

Kodiak wont start


Run a compression test (3-5 seconds) , with throttle closed, then repeat with throttle open. Should be around 100 psi closed and 125+ with it open. This will give you more direction.

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1999 Yamaha Kodiak 400 4X4


Is it a fat blue spark, Is it good fuel, have you done any recent work that might have cause this problem. If you have a small bottle that you can put a little bit of fuel into. Remove the spark plug put the fuel into the spark plug hole. install the plug back into the hole, make sure not to spill any fuel , if so clean a dry the fuel. Try to start, if it fires and runs for a bit it is a fuel issue. Just because you have fuel to the carb doesn't mean there aren't problems with the carb. There should be a drain screw on the bottom of the float bowl. remove it , is the clean fuel coming out. this is a good place to start.

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My Mitsubushi Space Star Car won't Start. What can I try?


spark plugs are deep in the head yet you should get all the the old fuel out first, stale fuel wont ignite and will also clogg fuel filter. you need a mix of atleast 70% new fuel even then its not good for the injecters. If its a manual gearbox a tow start is a quick fix although no go for auto's. cant be much wrong if car was fine when parked, plugs-fuel-filter and possibly fuel pump for sure. If that doesnt fix take plug out put in lead and crank engine to be sure you have spark even just put any plug you know works in lead leaving your plugs in engine just to check for spark y turning over engine looking for spark on plug good spark will be blue but any spark is good.

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1 Answer

No gas to spark plug on atv


carb float/needle sticking opening the carb drain will provide evidence if fuel is reaching fuel bowl, if fuel is present then i would suspect the carb is gummed up and it will need to be cleaned ( all jets/passages ) another area could be that the gas cap vent/line is plugged not allowing fuel to flow by gravity feed.

Jan 08, 2012 | Polaris ATV

1 Answer

My 2002 polaris trailblazer wont start it has fire


If you have oil and gas and it will fire then try a new plug. A bad plug when removed will appear to be fine but under compression can fail.

Also try a splash of good gas in the throat of the carb or intake (if fuel injected) with a new spark plug. My bet is it fires just fine.

If this is a fuel injector type engine you could have a bad injector control unit or a clogged injector.

If it fires with gas in the intake manifold then suspect carb or injector system. (which ever applies)

Thanks for using FixYa!

Kelly

Feb 19, 2010 | Polaris ATV

3 Answers

1998 Polaris 250 Trail blazer will not start


Your carb's jets are clogged or the shut off valve on the gas tank is clogged (old gas evaporates and leaves a varnish like substance that will close up the small openings in the carb or the valve). Try some carb cleaner first (no guarantees here). Usually it requires removing the carb and soaking it in cleaner and maybe even opening up the jets and fuel lines with a fine wire from a wire brush or welders torch tip cleaning tool. If you don't know how, then take it to a small engine repair shop. They will know what to do.

Jul 06, 2009 | Polaris ATV

1 Answer

I have a 2001 polaris trailblazer and it wont fire.


Did you change your spark plug? Just because you have good spark does not mean the plug is firing under compression or the porcelain is not cracked.

Mar 24, 2009 | Polaris ATV

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