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  #1  
Old 21-Jun-2009, 04:08 PM
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Glyn Glyn is offline
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another starting problem!!

just as i decide i will keep the 749s it is doing its best to pee me off
just replaced another fuel pump relay and solved 1 problem in order to develope another. i dont know if i've done something when in amongst the electrics.
went out for a ride after fixing relay and after a good ride we stop for petrol. when i try to start the bike the engine does about a quarter turn then stops (sounds like it is starting as normal but just stops after a second or 2) , after a few attempts it starts normally. same thing happens after we stop for tea and cake and after we stop for a pint. since then it has started normally, problem seems to have gone away. i still want to know what it is incase it comes back when i'm 100 miles from home!!
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Old 21-Jun-2009, 04:26 PM
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Hi glyn, how old is the fuel filter?
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Old 21-Jun-2009, 04:27 PM
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hi mark
fuel filter done at 6,000 miles just clicked on to 10,000
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Old 21-Jun-2009, 04:28 PM
KeefyB KeefyB is offline
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When you said it stopped,had it been firing?Could be the filter,or a faulty battery,or battery connection.Both are notorious for failing.

Last edited by KeefyB : 21-Jun-2009 at 04:33 PM.
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Old 21-Jun-2009, 04:39 PM
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the bike starts to turn over when i press the button but only for a second then just stops. did this on average five or six times before it turned over normally
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Old 21-Jun-2009, 04:53 PM
KeefyB KeefyB is offline
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Hmm,.....I'm thinking battery or battery connections.
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Old 21-Jun-2009, 05:04 PM
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once it starts to turn the engine over propally the battery sounds strong enough??
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Old 21-Jun-2009, 05:06 PM
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of to the garadge with the voltmeter then
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Old 22-Jun-2009, 07:13 AM
KeefyB KeefyB is offline
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The battery needs at least 12.7v to turn over the engine and power up the injection system.Sometimes you can get 12+v on the multimeter but the battery wont have enough ooomph to do the job.
If you are sure the battery is good,have a look at the starter solenoid.Make sure the connections are good,clean and tight.
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Old 22-Jun-2009, 09:37 AM
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DSC Member Monty Monty is offline
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Quote:
Originally Posted by KeefyB
The battery needs at least 12.7v to turn over the engine and power up the injection system.Sometimes you can get 12+v on the multimeter but the battery wont have enough ooomph to do the job.
If you are sure the battery is good,have a look at the starter solenoid.Make sure the connections are good,clean and tight.

Also suspect the fuel relay-even if you have just changed it. My ST4S was notorious for eating fuel relays-when Jo and I went to Italy in 2003 we visited the Ducati dealer in every major town we stopped at to buy a new one. When we got back home JHP chopped the small relay out and replaced it with a big beefy unit from a 888-never had the problem since-still carry a spare under the seat though.................

John


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