Loud bang

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hooperman
Posts: 39
Joined: Tue Sep 22, 2009 6:59 pm
Location: Kent

Loud bang

Post by hooperman »

1999 R1100S.
Pressed the starter on Monday morning. Engine turned over but did not start. Tried several more times. Then the starter stuck in the dis-engaged position. Put the battery on charge. Went to work on the Bantam. when I got home took the starter off and freed it. Put it back. Motor turned over but did not start. Then there was a loud bang! The plugs spark. I can smell petrol on the plugs. It doesn't even fire. Was the loud bang the ignition timing thing? :(
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South_Oz
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Post by South_Oz »

Was it a mechanical loud bang or an exhaust loud bang? If it was mechanical it could have been lots of things. If it was an exhaust bang I would check for spark and check your Hall Effect Censor (HES).

Dave
99 R11s Pov. Spec.
92 RGV250 Race Spec. Australian Land Speed Record Holder MPS/G 250 131 MPH http://www.dlra.org.au/index.htm
85 RZ250 Yamaha Std.
85 RZ250 Yamaha Spares.
84 RZ250 Yamaha Banshee 350 top end.
84 RZ250 Yamaha Rebuilding for sale.
hooperman
Posts: 39
Joined: Tue Sep 22, 2009 6:59 pm
Location: Kent

R1100S BANG

Post by hooperman »

So how can I check that sensor?
hooperman
Posts: 39
Joined: Tue Sep 22, 2009 6:59 pm
Location: Kent

R1100S BANG

Post by hooperman »

Sorry, the bang was not mechanical - and it still turns over without any unusual noises.
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South_Oz
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Post by South_Oz »

Im no expert on these things but ive read about them failing.

http://www.advrider.com/forums/showthread.php?t=688232

http://www.ebbo.org/2av54.php

Dave
99 R11s Pov. Spec.
92 RGV250 Race Spec. Australian Land Speed Record Holder MPS/G 250 131 MPH http://www.dlra.org.au/index.htm
85 RZ250 Yamaha Std.
85 RZ250 Yamaha Spares.
84 RZ250 Yamaha Banshee 350 top end.
84 RZ250 Yamaha Rebuilding for sale.
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Dai wiskers
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Location: Caerphilly

Post by Dai wiskers »

Hall sensor check put bike on centre stand remove plugs put back into plug caps ignition on put bike into gear turn engine by back wheel if sensor good you will get spark and fuel pump will prime with every turn of the motor

Where are you someone may be close and be able to help

Fill in user C,P, then we will know where you are if you just say in a reply we will forget!

If sensor U,S, it will still prime when you turn on ignition and spark once but that will be it

Hall sensor usually fails after a wet run or after being left to warm up for too long [left ticking over for ten minutes will often cook the wireing]

Not often Hall sensor that fails usually wireing to the sensors

Hope this helps Dai
My bike shines when it rains!!!!!!!!!!!!!!!!!

Dyslexic Dai


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hooperman
Posts: 39
Joined: Tue Sep 22, 2009 6:59 pm
Location: Kent

R1100S BANG

Post by hooperman »

Thanks Dai. I will try that tonight if possible. I am in Dartford.
hooperman
Posts: 39
Joined: Tue Sep 22, 2009 6:59 pm
Location: Kent

Loud bang R1100S

Post by hooperman »

User CP?
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Al
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Post by Al »

He means on your profile page, just fill in a bit more info in the location bit.

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Dai wiskers
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Post by Dai wiskers »

Al wrote:He means on your profile page, just fill in a bit more info in the location bit.

Al.
That's the bit thanks Al
My bike shines when it rains!!!!!!!!!!!!!!!!!

Dyslexic Dai


Steptoe
http://www.gsshop.biz/


Dan Cata
http://boxer-upgrades.webs.com/


Lennie
http://www.boxer-performance.com/index.html
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Vince
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Post by Vince »

It's not unheard off for excess fuel to ignite and blow the throttle body off the inlet stub. Take a look at them as well.
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