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starting mystery.


mishmosh
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I have a Mk4 1300 with a simonbbc ignition. standard twin 1 1/4 su  carbs.  Until I recently, it was an excellent starter , taking a quick spin of the starter and little choke. Now it needs a full battery  a good few spins and full choke.  I have changed the Plugs, checked the leads, checked the jets are seating.  Now  I did have it tuned at Donington but it didnt need much  really.

 

ideas?

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Think I would check the feeds from the ign switch to coil are live when you are cranking it up

 

is this would have been a ballasted coil,?. Did you give the simon unit a 12v feed ??

 

as cold weather drops battery volts and ups the stater load ,

 

it could be with a ballast lower voltage than it likes

 

pete

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a cheap meter i guess,   

 

so no ballast that eliminates any old balls going on ,  this may be a death nell of the simon unit , some love em  some hate em !

 

Ive come across a couple of duff ones in my years but never fitted any 

 

if you pull a plug lead do you get a good spark jump to earth

 

whos rotor , black with a rivet or red one ??

 

Pete

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rotor is standard BBC.  good clean spark.   I am starting to think its time to do a compression test. Yrs ago when I first bought it, It had a sticky valve. The AA would regularly towstart me. It fired instantly then.  I am  on a leaded head and have done over 40k on it. Maybe, its time.....

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