Question about Triumph Spitfire

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My mk 4 spit is turning over and firing with the ignition key open but shuts off as soon as I let the key go. Any ideas?

Fired up first time in the spring, did a 10 mile run. Next weekend turns over but won't fire up so went through each thing - changed the sparks, the leads, the diff cap, the rotor arm, the points and the coil......still no life in the old girl. So I am now looking at an ignition issue but where to start?..

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I'm thinking it's the switch itself since it does fire in the 'start' position. The contacts in 'run' position may have become worn, hence no current supply to ignition.. This is not unusual if the ignition key is combined with several others, placing extra weight on the mechanisim. This happens with air cooled Porsche 911's and older liquid cooled VW's..

Posted on Oct 03, 2015


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Posted on Jan 02, 2017

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SOURCE: changed coil ignition module cap and rotor a week ago, now doing same thing again, it'll turn over all day long has fire but won't start like it has no fire.

Could be a bad cam or crank sensor possible fuel related

Posted on Apr 07, 2015

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