Rotax 912 running ruff during mag drop....?

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martyntaylor
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Joined: Sun Nov 15, 2015 7:30 pm

Rotax 912 running ruff during mag drop....?

Post by martyntaylor »

Hello people

I have a rans s6 at little gransden near Cambridge which runs ruff during a mag drop which leads me to think I have an ignition problem on one of the spark plug. Which could be the ignition packs or the coils.

How do I go about getting this diagnosed and repaired


Thanks martyn

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Leesr
Posts: 48
Joined: Thu Sep 25, 2008 12:04 pm

Re: Rotax 912 running ruff during mag drop....?

Post by Leesr »

Dough sparking plug? Cheap and easy to eliminate. Then move on to other sources if that doesn't fix it.
Rob Lees
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John Price
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Joined: Mon Jan 07, 2008 7:27 pm
Location: Eynsford

Re: Rotax 912 running ruff during mag drop....?

Post by John Price »

Then try the spark plug cap, then the HT lead connections at either end. Sometimes they work loose.

Then go for carb balance and idle.

These are all easy to do prior to getting on to the complex stuff.

John.
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Kevin Dilks
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Joined: Tue Apr 07, 2009 6:21 am
Location: leicestershire

Re: Rotax 912 running ruff during mag drop....?

Post by Kevin Dilks »

At what RPM are you doing the mag check ?

If at 4000 then , like some has said go for a plug but more like a plug cap as the resistor inside cracks, test by removing the cap and checking with a meter anything over 5.2K ohm and its a bin job.

cheers
Kevin
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