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Old 24 July 2006, 12:26   #1
Country: UK - England
Town: essex
Length: 5m +
Join Date: Jul 2006
Posts: 3
johnson vro 70

hi just found site and im well impressed, can anybody help with a problem on our johnson engine it will not start, we have only just got it and yesterday we started it out of the water using a hose and some earmuff things to get water through it started and ran fine we shut it down and then tried it today , no go no spark at plugs any ideas thanks

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Old 24 July 2006, 13:38   #2
Country: UK - England
Town: solent
Boat name: wilson
Make: jeanneau merryfisher
Length: 5m +
Engine: suzuki df 70hp
Join Date: May 2006
Posts: 70
did you try changing the the fuel bulb hold the key in for the choke?

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Old 24 July 2006, 13:40   #3
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Country: UK - England
Town: Salisbury/Poole
Boat name: Blue C
Make: XS 600
Length: 6m +
Engine: 125hp Opti
MMSI: 235082826/235909566
Join Date: Jan 2004
Posts: 1,439
Have you checked the kill switch? these work by cutting the ignition circuit.

Brian C
Harbour Sea School & APS Marine Centre
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Old 24 July 2006, 13:48   #4
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Country: UK - Scotland
Boat name: imposter
Make: FunYak
Length: 3m +
Engine: 2 stroke YAM 20 HP
MMSI: 235089819
Join Date: Sep 2005
Posts: 9,422
Before the intelligent people who know about engines start with their systematic and engineering based answers can I contribute from my long list of stupid things list:

Engine doesn't start checks!

(Not necessarily in this order)
Is the main battery on?
Is it charged?
Are the connections OK?
Has the engine fuse blown? (if so why?)
Is it in gear (start in gear protection stops everything)?
Is the kill cord connected?
Double check is the kill cord connected - I often keep mine on my keys (when going to from water) - forget to connect it - but a cursory glance looks like its there!
Beyond this its into faulty wiring issues. Need to test voltage at battery and engine with multimeter. Check that there is voltage going to starter/solenoid when key turned. Check voltage on primary coil etc.

Normally a killswitch shorts out the spark circuit. So I would stick the multimeter between the HT lead and the engine body - should be open circuit (high resistance). it is not uncommon for killswitches to fail.

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Old 24 July 2006, 15:23   #5
Country: UK - England
Town: essex
Length: 5m +
Join Date: Jul 2006
Posts: 3
johnson vro70

thanks for all your immiadiate help, it was the kill switch, cant thank you all enough for your knowledgable advice
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