Weird coil issue

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dudload
Minor Fan
Posts: 417
Joined: Tue Sep 01, 2015 10:37 am
Location: East London
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Weird coil issue

Post by dudload »

Evening all!

I thought I'd buy a coil to have as a spare in case the current one goes pop at some point. All run well on current coil with an electronic distributor.

However, when attaching the new (made in Brazil) Bosch blue coil, the car won't start. Put the old one back on and bingo, it starts on the key.

Looking at dizzy doctor website it seems to suggest a 'sports' coil is required, so I thought the Bosch would actually be a better match. Readings of the coil below. Current coil is quite a bit higher at around 6 across +/- and 10k from top to +be.

I'm thinking maybe the old coil has +/- the wrong way round on the body, so I'm connecting the new one up the wrong way? (I believe electronic dizzys only work the right way round), but don't want to blow it by trying. Any thoughts or way to check what's going on?
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20200626_183346.jpg (1.79 MiB) Viewed 819 times
dudload
Minor Fan
Posts: 417
Joined: Tue Sep 01, 2015 10:37 am
Location: East London
MMOC Member: Yes

Re: Weird coil issue

Post by dudload »

I've checked the accuspark instruction diagram and all is wired up ok, so almost as though the resistances aren't right for the dizzy!?
oliver90owner
Minor Legend
Posts: 1655
Joined: Thu May 12, 2016 6:33 am
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Re: Weird coil issue

Post by oliver90owner »

My thoughts are all ‘contact the supplier’.
dudload
Minor Fan
Posts: 417
Joined: Tue Sep 01, 2015 10:37 am
Location: East London
MMOC Member: Yes

Re: Weird coil issue

Post by dudload »

Haha, what's strange is I tried another coil with the same resistances and if didn't work too. I bought the Bosch as thought the other high performance one was a dud. Will probably contact accuspark to see what they think!
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