Weird evening

[Mario_Kempes]

Went to ride my 2005 Hornet home after work and it wouldn't start. The started wasn't making it fire up and it seemed as if petrol wasn't getting to the carb. I checked the line and it wasn't pinched or anything. Neither was the vacuum hose. It seemed weird as it's never given me a minutes trouble and started straight away, as usual, this morning.

So I give up and call the tow truck to take me home with the intention of giving it a going over on saturday.

Couldn't resist messing around and went back out to the garage just now there. Same story again yet when I tried to start it without using the gas it seemed to be trying to fire up yet as soon as I opened the throttle a bit it cut out.

Again with the starter and no gas and it fired up. Was barely idling for about a minute and then steadied and is now back to normal.

Any guesses? It can't have been flooded could it? It wouldn't start from the get go and I always gave it a couple of minutes before trying again.

[Nobby the Bastard]

If it has valve shims, I'd say that the valves are sticking open slightly, stopping it from running when cold, but as the engine warms up, the head expands more than the vlaves, opening up the clearances and aloowing it to run properly.
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trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Triumph Sprint ST 1050

[Fizzer Thou]

[Mario_Kempes]

It was parked facing uphill all day. I'm wondering if that has maybe had the float thing in the carbs at a funny angle. It felt like it was starved of fuel.

[Nobby the Bastard]

[davebike]

Probably just cold and flooded
But worth a good look over
Air filter and plugs
Plenty oil and not too old or dirty
Check there is coolant in the overflow tank

If all Ok then consider checking Valve clearances yes it has Shims
but not that lightly to be the problem


Dave
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Dave
NC750Xdct + others at work !
davebike1@gmail.com

[c_dug]

If it was perfect before and is perfect again now then I would go with your gut and assume it was a fuel issue. It is unlikely to be an issue with the shims because those sort of things tend to happen over time rather than suddenly in-between rides and because those sort of things don't suddenly start working again with no sign that anything was ever up.
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I am a bellend, I am a man of constant sorrow, I am a gummy bear, I am a rock.

[Nobby the Bastard]

[wilz1234]

Probably just water or dirt in the tank, I too doubt that valve clearances would suddenly be a problem, then suddenly stop being a problem
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RS50 - ZXR400 - ZXR 400 - ZX7R - Bandit 600 - NTV 650

[Nobby the Bastard]

What we need to know from Mario_Kempes is how it behaved today.
____________________
trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Triumph Sprint ST 1050

[Alpha-9]

[Nobby the Bastard]

[Alpha-9]

Oh yeah, gaps will reduce, thus making less space
I am spacker brained

sounds like idle fuel mix balancing?
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Fzr-600 1999

[Nobby the Bastard]

Think in terms of everything working fine when parked, and then not working when he tries to start it a little while later.

Nothing has been touched and once pursuaded to start, the bike runs fine.

It's either one of those transient things that never recur or...

The suggestion that the floats is a good one. The spark plugs being passed theiir sell-by date is a good possibility.

If the problem continues, and the other two are discounted, and the bike runs and starts fine (up to 2-3 hours after last run) but is a fucker to start when cold with a sudden burst into life, I'll go with the shims...
____________________
trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Triumph Sprint ST 1050

[temeluchus]

When were the spark plugs last replaced?
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Some shite cruiser. Now with guns and FREEDOM!

[Mario_Kempes]

Well, I've been out and about on it all weekend without it missing a beat.

Didn't trust it enough to take it to work on Friday but went to the garage on saturday morning and it fired up straight away.

It's definitely a bit weird.

I changed the filters, oil and plugs about 6 weeks ago.

[Mario_Kempes]

So much for the parked-on-a-slope-float-bowl-stuck-at-angle idea; the bastard did it again this evening!

It started after a good minute holding the started and not touching the gas. Was really rough at first but I just left it and eventually it was fine.

It was cold today but nowhere near UK levels. About 4º at the coldest.

I've never had a single problem with i before this week. New plugs etc.

Can't figure it out.

[Rogerborg]

Never hurts to give the battery a good charge.

Unless it explodes, then it might hurt quite a bit.
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Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike

[Nobby the Bastard]

I refer you back to my previous answer.
____________________
trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Triumph Sprint ST 1050