Ignition cut out

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Rev Light
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Ignition cut out

Post by Rev Light » Mon Jul 08, 2019 10:29 pm

Driving home from the Wiltshire Noggin tonight in my SE5a, when my car stutters and backfires. Big cloud of smoke, etc. Then she runs, then again stops. I can see the Rev counter drop to nothing when this occurs, so it is definitely the low tension circuit being affected, She runs again for a few minutes then does it again. All the way home from Devises to Swindon. But I make it home......Just.

Don't think my Kenlow fan is working either. But that is secondary. Although it might have some bearing on the fault.

So tomorrow I will be looking for the short/open on my low tension circuit....And a jolly good look around elsewhere. Looks like I will be going to France in the Dacia....Yay......

Laters...

Steve


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Ignition cut out

Post by scimjim » Mon Jul 08, 2019 10:45 pm

Did you pop the bonnet when you got home? Easier to see wayward sparks in the dark.


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Ignition cut out

Post by midscotscim » Mon Jul 08, 2019 10:57 pm

Same thing happened to my 5a some years ago now. Fuse contacts were dirty causing the fuse holder contacts to get hot and melting the fuse box. As the plastic softens the fuse contacts move and lose contact with the fuse. Make sure all the fuses are clean and that the contacts are gripping the fuse not just lying next to them.

Regards, Mark.


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Ignition cut out

Post by Rev Light » Tue Jul 09, 2019 5:40 am

Alas, the car was pushed into the driveway having died 50 yards from home and coasting the rest of the way.

I will look at it tonight for anything obvious. I have an Acuspark(?) ignition trigger, so no points to worry about.

Cheers

Steve.


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Ignition cut out

Post by philhoward » Tue Jul 09, 2019 6:30 am

Rev Light wrote:
Tue Jul 09, 2019 5:40 am
I will look at it tonight for anything obvious. I have an Acuspark(?) ignition trigger, so no points to worry about.

Cheers

Steve.
Just the possibility of a failing Accuspark :mrgreen: :w

I’m going to play devils advocate here - do you think the cutting out may have coincided with when the fan would have come in? Just wondering if they share a common feed or earth?


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Ignition cut out

Post by willholderogri » Tue Jul 09, 2019 7:43 am

Steve
that's what mine did when the acuspark started playing up
will


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Ignition cut out

Post by Rev Light » Tue Jul 09, 2019 8:54 am

The car came with an Accuspark and it has been very reliable over the last 4 years or so... since I have owned the car.

However I will do a visual check tonight and see if there is anything obvious before I start thinking about changing the Accuspark.

Cheers

Steve


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Ignition cut out

Post by willholderogri » Tue Jul 09, 2019 10:22 am

Mine was great but the heat seemed to affect it


1962 mini, bedford CA , KR200. morris 1000, mini pickup.several escorts,ford grandad.ford cortina X2 ,astra, SE5A x 2 ,ford focus.

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Ignition cut out

Post by Rev Light » Tue Jul 09, 2019 10:32 am

Last night the symptoms started before the engine was fully warmed up. So not so sure. Also I had driven it to work earlier in the day and all was well. Still think I have a short somewhere.


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Roger Pennington
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Ignition cut out

Post by Roger Pennington » Tue Jul 09, 2019 11:21 am

Rev Light wrote:
Tue Jul 09, 2019 10:32 am
Last night the symptoms started before the engine was fully warmed up. So not so sure. Also I had driven it to work earlier in the day and all was well. Still think I have a short somewhere.
If you think that's the case, then it would be worth carrying a length of wire with a couple of mini crocodile clips on each end, and hot-wiring the coil next time it happens, if the problem goes away, you've confirmed the diagnosis.


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Ignition cut out

Post by willholderogri » Tue Jul 09, 2019 12:06 pm

Roger Pennington wrote:
Tue Jul 09, 2019 11:21 am
If you think that's the case, then it would be worth carrying a length of wire with a couple of mini crocodile clips on each end, and hot-wiring the coil next time it happens, if the problem goes away, you've confirmed the diagnosis.
I agree that way you don't waste money chasing the problem


1962 mini, bedford CA , KR200. morris 1000, mini pickup.several escorts,ford grandad.ford cortina X2 ,astra, SE5A x 2 ,ford focus.

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Ignition cut out

Post by Rev Light » Tue Jul 09, 2019 8:22 pm

So, I had a quick gander at the Scimitar tonight. Nothing obviously wrong. I squeezed a spade connecter from the coil to the Acuspark a little tighter. The I pulled the distributer cap off and had a look inside. dirty and worn, as one would expect, but also one of the contacts had what can only be described as a build up of metal on it. S I reached for my spare....Only to find it did not have a centre contact..Doh! So I cleaned up the original, filing down the contact, and put it back together. I then started the car up to see what would happen. I Got a belt of one of the HT leads. So turned her off and replaced all the leads, from a set I purchased at Curborough, last year. I then restarted the car and ran her up to temp. The fan came in eventually and all seems well, sort of?

I will order another Dizzy cap, plus another as a spare tomorrow.

But I do not think I am out the woods yet.

Had limited time tonight, but I will take here for a run tomorrow evening and see how she goes.

Fingers crossed.

Steve


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Ignition cut out

Post by Rev Light » Wed Jul 10, 2019 8:09 pm

So I took her out tonight and got her properly hot. Fault no longer apparent, apparently.......


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Ignition cut out

Post by Rev Light » Sun Jul 14, 2019 9:56 pm

Well, that did not last long.

I ran the car out several time this weekend without issue, but on the way back from taking my daughter to work this evening, the ignition fault returned. Not enough to break down, but enough to know the problem is still there.

I am going to put in the new ignition switch that I got from Mark last year tomorrow night and a new Accuspark Stealth with coil for ballast ignition is on order.

On the plus side I finally have a cigarette lighter. Not that I smoke, but now at least I can run a satnav or use an electric tire pump......Small victories....

Steve


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Ignition cut out

Post by willholderogri » Tue Jul 16, 2019 7:46 am

Make sure you only do one thing at a time or you will never know what caused it.


1962 mini, bedford CA , KR200. morris 1000, mini pickup.several escorts,ford grandad.ford cortina X2 ,astra, SE5A x 2 ,ford focus.

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