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06 October 2007, 13:49
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#1
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Member
Country: UK - England
Town: Cowes, Isle of Wight
Boat name: TiLT 2
Make: Avon Adventure 620
Length: 6m +
Engine: Optimax 135
MMSI: 235032203
Join Date: Sep 2005
Posts: 1,641
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Optimax 135, starting with a flat battery
Is there any inherent reason why an Optimax cannot be started with jump leads or a powerpack, or is it something we are doing wrong?
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06 October 2007, 14:59
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#2
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Member
Country: UK - Wales
Town: Southampton
Boat name: DynaMoHumm/ SRV/deja
Make: Avon8.4, 5.4 & 4.777
Length: 8m +
Engine: Cat3126 Yam 90 &70
MMSI: 42
Join Date: Dec 2003
Posts: 6,562
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is it spinning but not firing
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Here it comes again, I don't stand a chance
Soul possession, Got me in a trance
Pullin' me back to you - Deja Voodoo
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06 October 2007, 15:01
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#3
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Member
Country: UK - Wales
Town: Southampton
Boat name: DynaMoHumm/ SRV/deja
Make: Avon8.4, 5.4 & 4.777
Length: 8m +
Engine: Cat3126 Yam 90 &70
MMSI: 42
Join Date: Dec 2003
Posts: 6,562
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I'm hitting the road soon but if you have a problem after 1615 ring 07886920181 and ask the Nasty lady that answers if you can talk to me!
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Here it comes again, I don't stand a chance
Soul possession, Got me in a trance
Pullin' me back to you - Deja Voodoo
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06 October 2007, 15:12
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#4
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Member
Country: UK - England
Town: Cowes, Isle of Wight
Boat name: TiLT 2
Make: Avon Adventure 620
Length: 6m +
Engine: Optimax 135
MMSI: 235032203
Join Date: Sep 2005
Posts: 1,641
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Quote:
Originally Posted by Rogue Wave
is it spinning but not firing
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It did spin, albeit slowly, a couple of times. But its making a clicking noise mostly.
Sorry to be vague but I am crap at engines etc.
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06 October 2007, 15:16
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#5
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Member
Country: UK - England
Town: Bucks
Boat name: Blue & Ding Dong
Make: Ribeye,SR4 & Bombard
Length: 6m +
Engine: 115,50 & 15Hp Yams
Join Date: Feb 2004
Posts: 3,252
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They are very power hungry to start & need to pull a lot of amps to start, I had to replace my batteries when I bought mine!
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06 October 2007, 15:48
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#6
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Member
Country: Other
Town: San Carlos, Mexico
Boat name: INDE
Make: LOMAC 730
Length: 7m +
Engine: 200 Merc.
MMSI: Please press 1
Join Date: May 2006
Posts: 1,688
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Remove the old battery. If the plates are shorted internally then it will pull the voltage down. Try again with a known good battery, maybe the one from your car.
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Running around like a head with it's chicken cut off.
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06 October 2007, 17:19
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#7
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Member
Country: UK - Scotland
Town: Glasgow
Make: humber
Length: 6m +
Engine: optimax 150
Join Date: May 2007
Posts: 70
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They need the full 1000 CCA to open the injectors so the battery you are jumping from will need that plus good cables and connectors.
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06 October 2007, 21:53
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#8
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Member
Country: UK - Wales
Town: swansea
Boat name: Too Blue
Make: BLANK
Length: 8m +
Engine: Suzuki DT225
Join Date: Mar 2004
Posts: 12,791
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Quote:
Originally Posted by Limey Linda
Remove the old battery. If the plates are shorted internally then it will pull the voltage down. Try again with a known good battery, maybe the one from your car.
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Good point.
Even with a massive jumper battery you still won't get it to start if there is a short inside the main one. I know - almost melted my HD jumper leads as well.....
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06 October 2007, 22:15
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#9
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Member
Country: UK - Wales
Town: West Wales
Make: Vipermax 5.8, SR4.7
Length: 5m +
Engine: 150 Opti, F50EFi
Join Date: Sep 2005
Posts: 6,299
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Quote:
Originally Posted by iainmartins
They need the full 1000 CCA to open the injectors so the battery you are jumping from will need that plus good cables and connectors.
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800 CCA 
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06 October 2007, 22:27
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#10
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Member
Country: UK - Scotland
Town: Glasgow
Make: humber
Length: 6m +
Engine: optimax 150
Join Date: May 2007
Posts: 70
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Ok what I meant was 1000 MCA 
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08 October 2007, 16:03
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#11
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Member
Country: USA
Town: Oakland CA
Length: 3m +
Join Date: Feb 2005
Posts: 6,653
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Quote:
Originally Posted by Limey Linda
Remove the old battery. If the plates are shorted internally then it will pull the voltage down. Try again with a known good battery, maybe the one from your car.
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Note: Do NOT try to switch the cables back to the original battery once it starts (i.e. while the motor is running.) The alternator circuit does not like being run without a load, and you'll risk blowing the alternator's rectifier components.
Verify the battery is the problem, then replace if needed. Shut the motor down whenever disconnecting batteries.
jky
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08 October 2007, 16:37
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#12
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Member
Country: UK - England
Town: Cowes, Isle of Wight
Boat name: TiLT 2
Make: Avon Adventure 620
Length: 6m +
Engine: Optimax 135
MMSI: 235032203
Join Date: Sep 2005
Posts: 1,641
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Update
Thanks All, for the responses.
Update: after putting a battery charger on the battery overnight, the outboard fired up, first go.
Upshot: the Mercury is NOT HAPPY unless its battery is fully charged. We tried with jump leads and a booster pack, with no luck.
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