Technical help needed - again!!

[Dave_Snelson]

Hi Learned members - I have had an intermittent fault on my Windy 8800 since I bought it last August. The starboard motor (petrol / lpg) when cranked on the starter will start but when you let go of the key once the motor fires (and it does rev fire and up) the motor then stops. Clearly the ignition circuit is complete when the starter is being cranked but broken when the key is released. The other clues are that the volt meter and other associated instruments are dead when the stbd ignition is turned on and spring to life when the key is turned further to crank the motor. It does this on both gas and petrol. The port engine is unaffected.

The fault is now hard failed as there is no power to the guages unless cranked.

Any ideas please??

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[Duster]

Most probably a faulty ignition switch,either,check the switch out with a meter ,or run a temporary live feed to the main feed wire ( efectively "hot wireing" the engine) or try a replacement switch . Regards mikej



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[DavidJ]

With many ignition circuits there is a resistor in the low tension circuit to the ignition coil which is switch bypassed when the engine is cranked. The coil is designed for 7volt usage (the voltage that the battery is pulled down to when cranking) and the resistance is to reduce the 13.5 or so volts (available after cranking) down to 7 volts for normal running. The 'switch' is part of the solenoid function.
I suspect the wire running to the non coil side of the resistance because current is only getting to the coil while the solenoid is activated.
I hope this makes some sence
David

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[cliff]

Sounds like a defective ignition switch. Check the terminals at the back of the switch are tight and there are no loose wires.

Meter from ground to the IGN terminal and switch the ignition on - not cranking. Is there is power there? If not you have a duff switch. to check, put a jumper across the power feed terminal to the IGN terminal and check your voltmeter is working. then crank her over to start and release the key to IGN pos. If engine continues to run you have isolated the problem -To stop the engine cut the jumper lead.

The fact you do not show any voltage when the key is in the IGN position but reads when cranking would indicate either a duff switch or a mixup in the wiring at the back of the switch rather than a problem with the ballast resistor / coil.



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[Nat]

Sounds like Ballast resistor to me. but check ign switch anyhow.

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[Dave_Snelson]

Thank you all - nm

nm

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[Col]

Yup. Ballast res. You will find it at the back near distributor. You can bypass it with a bit of HD wire to prove fault (just don't leave it like it)

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[itsonlymoney]

Re: Thank you all - nm

Dave
Hope you dont mind but I parked on your club car park yesterday for my lunch, enroute to site meeting Barmouth ish. The sign said a fiver for parking but I wasnt technically parked just stopped. Not sure which boat was yours but I suspect the one with a red hull and a tonneau cover int. middle of the channel. Club looks very nice by the way.
Regards - Ian

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[Dave_Snelson]

Re: Thank you all - nm

No problem Ian - we don't really collect the fiver anyway!! My boat is further down the channel by about 100M and is a cream hull with grey striping.

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[pistonbroke]

Re: Thank you all - nm

Yep, sounds like ballast resistor to me. Used to be a problem on XJ's and Sherpa vans as well!!

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[itsonlymoney]

Re: Thank you all - nm

Oh
Not the one I thought then.
Ian

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