my 08 ninja 250r wont run after it was tipped over

[boyd19043]

my bike fell over on me when i was pushing it up the driveway and now it wont run. It ran for a min and stalled on me and hasnt ran since. ive cleaned the carbs and changed the spark plugs still nothing. itll try to run off of starting fluid. any tips on what i should do?

[jkv45]

Could be a couple things.

Either it flooded when it tipped over, or the floatbowls drained and there's not enough fuel.

Try cranking it without choke and opening the throttle - 1/4, 1/2, full - for 5 seconds each.

If it doesn't start after that, try adding full choke for 5 seconds of cranking, then back it off to 1/2. If no go, open the throttle 1/16 to 1/8 and try.

You may need to charge the battery after all of that if it doesn't light up.

[boyd19043]

thanks ive tried it but no go i have it hook up to a car battery

[jkv45]

Originally Posted by boyd19043

thanks ive tried it but no go i have it hook up to a car battery

You tried all that and it still won't fire?

Open the gas cap and try. Then open the floatbowl drains and catch what comes out. Did it look ok? Where they both the same amount? Did gas come out?

[boyd19043]

idk thanks, im going to look it over again tomorrow. it looks like my oil has some coolant in it.

[dcj13]

Verify you have spark at the plugs.

[jkv45]

Originally Posted by boyd19043

idk thanks, im going to look it over again tomorrow. it looks like my oil has some coolant in it.

Why do you think there's coolant in the oil?

If that's the case, the coolant overflow bottle should be low. The oil would be milky-colored (maybe some green color if that's the color of the coolant) and the oil level might rise.

The exhaust could show more vapor than normal and it would have the unusual smell of heated coolant.

[boyd19043]

it has spark, and the oil is milky looking.

[dcj13]

You don't want coolant in the oil, of course, but that shouldn't keep it from starting.

With respect to starting: have you tried a shot of starting fluid (diethyl ether)?

[jkv45]

Originally Posted by boyd19043

it has spark, and the oil is milky looking.

You can get milky-looking oil from condensation forming in the engine. It can take a while (like 30 minutes) of riding to clear the window, and it may form again as it cools if the conditions are right - not much you can do about it except extend your short trips and minimize idling.

Check your coolant overflow. If there's any amount of coolant leaking into the oil the level will be dropping.

You could try a shot of Starter Fluid as dcj recommended. It doesn't take much. I've had engines that refused to start normally start right up with a shot even though they ran just fine days before and after (no carb issues).

[Foxrider64]

You say you cleaned the carbs. This was after the issue of not starting began?

When you reassembled them is it possible one of the vacuum hoses got crossed? Have you verified that you have fuel getting in to the carb bowls? Each bowl has a drain screw. Loosen the screw and see if fuel comes out. If there is fuel in the bowls I would suggest pulling the plugs and trying to start the bike without them. Obviously it won't start, but if there is excess fuel in the cylinders it will blow it out. Put the plugs back in and try again.

If there is not fuel in the bowls, take the carbs apart and clean them again and set the float heights as per the manual. Using an air compressor, blow through all the passages and jets. Ensure the vacuum hoses are routed properly and try again.

[feernando]

maybe its flooded

[spooph]

I assume it's turning over/cranking, but won't fire?

Which side did it fall on? Any way to post a video?