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Irregular spark

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Stuwey

Post subject: Re: Irregular spark

Posted: Wed Aug 23, 2017 4:20 pm

1275cc

Joined: Wed Mar 30, 2005 8:54 pm
Posts: 2010
Location: Greenhill, SA

zulu_warrior1976 wrote:

Still backfires like a mofo.

Too lean?

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Cheap, Fast, Reliable. Choose two.

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Minicooper4me

Post subject: Re: Irregular spark

Posted: Wed Aug 23, 2017 6:03 pm

998cc

Joined: Sat Nov 23, 2013 7:20 pm
Posts: 645
Location: Victoria

Is it misfiring sitting at idle or driving along.

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zulu_warrior1976

Post subject: Re: Irregular spark

Posted: Wed Aug 23, 2017 6:07 pm

998cc

Joined: Fri Jan 28, 2011 1:19 pm
Posts: 533
Location: Adelaide

whiteysi8876 wrote:

replace the condenser in the distributor

And the chocolates go to whiteysi8876. The condenser was the solution.

Thanks guys.

Z

Sent from my iPhone using Tapatalk

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Zulu...

1967 mini Cooper S

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drmini in aust

Post subject: Re: Irregular spark

Posted: Wed Aug 23, 2017 10:33 pm

religious status

Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39754
Location: near Baulkham Hills, NSW

Some well known brands of condensers now are rubbish.
It makes more sense than ever to bin it and the points, and fit an electronic module. Less spark scatter, and the timing stays set.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:

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Wakka

Post subject: Re: Irregular spark

Posted: Wed Aug 23, 2017 11:15 pm

848cc

Joined: Wed Jan 01, 2014 8:41 pm
Posts: 51
Location: Brisbane - West

Why am I not surprised? We had exactly the same problem in the 2015 Pork Pie Charity Run - a new condenser broke down after 2 days of hard driving, and the replacement after only one day. The third (Repco supplied) unit went the distance, and a 'spare' Repco unit was needed for another car having the same problems.

So... as drmini says...move to electronic components, at the very least.

We ran the 2017 Pork Pie Charity Run on an electronic distributor (from a Mini Metro) and it did not miss a beat over 5000km of hard driving.

_________________
'66 Mk 1 Cooper S,
'69 Mk 2 Cooper S,
'81 Leyland Mini (in New Zealand),
'78 Clubman 'Special' (track car)

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zulu_warrior1976

Post subject: Re: Irregular spark

Posted: Sat Aug 26, 2017 6:49 pm

998cc

Joined: Fri Jan 28, 2011 1:19 pm
Posts: 533
Location: Adelaide

Mini now has a balanced resistor, new condenser, new rotor, new leads, new plugs and new dizzy cap. Started like a dream but ran like a turd. Solution... was running too lean at low revs. After an SU tweak now it's back to car heaven. Just can't help but smile when I drive it!

Sent from my iPhone using Tapatalk

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Zulu...

1967 mini Cooper S

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zulu_warrior1976

Post subject: Re: Irregular spark

Posted: Sat Aug 26, 2017 6:51 pm

998cc

Joined: Fri Jan 28, 2011 1:19 pm
Posts: 533
Location: Adelaide

Electronic ignition will be on the next project... [FACE WITH STUCK-OUT TONGUE AND WINKING EYE]

Sent from my iPhone using Tapatalk

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Zulu...

1967 mini Cooper S

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