Can you flood a fuel injected bike?

craigs23 · Mr Muscle Joined: 08 Jun 2005 Karma :

I tend to think it's not possible, but I'm attempting to get to the source of my recent R6 starting problem.

Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Hi

Yes you can flood a fuel injected engine. Normal way it happens is opening the throttle while cranking it over. Especially with the pretty crude fuel injection systems primarily mapped off throttle position used on many bikes.

All the best

Keith
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craigs23 · Mr Muscle Joined: 08 Jun 2005 Karma :

Hmmmm, so my recent problem https://www.bikechatforums.com/viewtopic.php?p=1674394#1674394 doesn't seem to be a likely flooding?

Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Hi

Not sure. You say the starter cranked over, but did the engine?

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

craigs23 · Mr Muscle Joined: 08 Jun 2005 Karma :

I'm guessing it did, as the oil light went out (as normal) when I pushed the starter. Just trying to find out why it didn't start....

Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Hi

Most Yamahas use an oil level warning light rather than an oil pressure warning light. And as far as I have seen these illuminate while the engine is off and then go out when you press the starter button (ie, rather than when the engine is running). Had Yamahas that are not turning over in the slightest and the warning light goes out as soon as you press the button.

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

craigs23 · Mr Muscle Joined: 08 Jun 2005 Karma :

Hmmm, similar light on the R6 dash I think.

Any ideas to the likely cause?

Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Hi

If not cranking over at all then possibly something simple like the starter relay or side stand cutoff switch.

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

craigs23 · Mr Muscle Joined: 08 Jun 2005 Karma :

If the starter relay is one of the small items under the saddle (similar in looks to an indicator relay), I did note that it lightly 'clicked' in to operation (as normal, I presume?) each time the bike was switched on and off (barely audibly over the whine of the fuel injection system, etc).

I checked the sidestand switch today, seemed to be functioning as it should....

What I don't understand is to why the bike's now working as normally as it ever should. There was no loud bang of unburnt fuel when it started, it fast idled as normal and returned to its usual smooth idle once warmed up.

Confused

Noxious89123 · World Chat Champion Joined: 10 Jun 2007 Karma :

Damp electrics??
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~~'06 Honda CBR125RW-6~~ ~ ~~'00 Honda CBR600F-Y~~ ~ ~~'07 Honda CBR600RR-7~~ ~ Bikeless Sad

~~'53 Ford Ka 1.3~~ ~ ~~'03 Vauxhall Astra SRi 1.8~~ ~ ~~'52 Vauxhall Astra SRi 2.2~~ ~ '53 Vauxhall Astra GSi

NSR-Rulez · World Chat Champion Joined: 12 Sep 2005 Karma :

Well you learn something new everyday i didnt think you could flood one, but i didnt know if you could or not.

craig your bikes are kept inside arent they? which would put damp electrics out i would have thought.
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Past: 1985 Suzuki GS 125 + 2002 Honda NSR 125 R-2 + Ford Fusion
Present: Honda CBR 600 RR-5 + Suzuki SV650S-K4 + Mitsubishi FTO GPX

Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Pete. · Super Spammer Joined: 22 Aug 2006 Karma :

craigs23 · Mr Muscle Joined: 08 Jun 2005 Karma :

Hmmm. Odd. Bike seems fine now, maybe it did, somehow, flood. It was very similar symptons.

I added a bit of injector cleaner to the tank, just in case that was the problem. Because, at the moment, given the coincidence of the previous night's fill up, it's the only thing I can think of (not sure how long the bike was sitting in the showroom).

wikiwiki · Scooby Slapper Joined: 17 Jan 2007 Karma :

I had a yamaha, once, Rolling Eyes

Didn't amuse me at all after one long ride it decided not to turn over on the return journey, push started it and off it went.

Then the next day electric starter was o.k, then next day didn't work.

I hate intermittent faults Evil or Very Mad

I took a morning to have a look only to find the starter motor feed from the relay, corroded (was right behind the front wheel so it could catch all the water and crap) but more of a problem, loose, My guess is it wasn't very tight to start with and the long run made it rattle off.

There was a click from the relay but no starter motor turning.

If your bike has, for no reason just cured itself and these were your symptoms, check the starter motor feed.

craigs23 · Mr Muscle Joined: 08 Jun 2005 Karma :

As I mentioned earlier, the starter motor seemed to be working fine throughout. The bike just didn't seem to fire (I was going to check the plugs after my last couple of attempts to bump start the bike, but didn't need to in the end).

I'm just concerned that the bike failed to start through some unknown reason. If or when it'll happen again isn't something I'm looking forward to. I'm going to look into breakdown recovery services, just in case.

If it continues to do it, I think the bike's still under warranty (which I don't fancy invalidating) so I'll get the garage to take a look at it. Or I'll consider exchanging it for something more reliable.