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#556704 - 30/01/19 08:24 AM Re: Roadster Starter Motor [Re: sospan]
Richard Wood Online   NoMood
Talk Morgan Enthusiast

Registered: 03/02/16
Posts: 1631
Loc: East Harling, Norfolk UK
Originally Posted By sospan
Definitely check the solenoid and connections, especially the earth.Years ago I had a car (not Morgan) with the same symptoms of clicking but no engagement. The motor itself was ok but the solenoid failed to engage the gear. A local auto electrical specialist cleaned and sorted it. I occasionally had to tap the solenoid (with a piece of wood )on the top of the motor to unstick it.


Yes to work efficiently the solenoid armature has to be a close fit to the soft iron core surrounding it, which provides the magnetic field to energise. A tiny amount of corrosion on the armature can cause it to partially jam giving rise to the temporary cure of tapping it with a soft hammer.
_________________________
Richard

2018 Roadster - Red/Magnolia - "Morton"
1967 Land Rover series 2a SWB
1960 Velocette Venom

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#556781 - 30/01/19 04:56 PM Re: Roadster Starter Motor [Re: John V6]
DaveW Offline
Roadster Guru
Member of the Inner Circle

Registered: 11/12/08
Posts: 17256
Loc: South Yorkshire
The most unusual problem I had with a clicking solenoid was a hairline crack in the battery positive terminal.
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DaveW
2005 Corsa Red Roadster S1
2016 Saffron Yellow (Narrow) Plus 4

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#556916 - 31/01/19 10:30 AM Re: Roadster Starter Motor [Re: John V6]
John V6 Offline

Member of the Inner Circle

Registered: 21/07/07
Posts: 13026
Loc: Suffolk
Too cold to fiddle today -2c. But I turned the car over & it started perfectly.
_________________________
JohnV6
2006 Indigo Blue Roadster S1

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#557362 - 01/02/19 09:47 PM Re: Roadster Starter Motor [Re: John V6]
milligoon Offline
Talk Morgan Addict

Registered: 20/04/14
Posts: 3018
Loc: Dorset, UK
If it's the Jag one fitted to mine then it already is a high torque type, the problem with mine was that it was over greased and the dust from the clutch gummed up the works in the solenoid.

Stripped it down cleaned it leaving the shaft grease free, put it back on and it worked a treat.
_________________________
Mark - driving
Archie the Old English Sheep Mog...........
2010 Roadster 3.0 V6 (S3) wink

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#557458 - 02/02/19 02:42 PM Re: Roadster Starter Motor [Re: John V6]
DavidR Offline
Just Getting Started

Registered: 25/04/16
Posts: 76
Loc: Hampton Hill, Middx.
I had a similar problem on a K series caterham, that didn't like to start when the engine was hot. Being a passenger on a track day with my son facing oncoming traffic at Brands following a spin, reminds you why you need a reliable starter!

It was finally tracked down to the starter not being exactly square to the flywheel and ring gear this was exaggerated when hot, effectively jamming the starter. Being tucked up under the exhaust manifold, didn't help either. A high torque replacement and some fettling of the mounting flange to square it up, solved the problem.

Not spinning also helps blush
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David
Aero S4

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#559335 - 12/02/19 11:11 AM Re: Roadster Starter Motor [Re: John V6]
John V6 Offline

Member of the Inner Circle

Registered: 21/07/07
Posts: 13026
Loc: Suffolk
Well as I had time today & it is a balmy 10c so I started the testing.
To my joy when I used a jump lead as a second earth it started. Take of the jump lead a it would only click.

The earth from the engine is hard to reach. I had to take off the air filter for access.

I cleaned up the contact areas & rebuilt it.
Will now buy a second earth lead as belt and braces.
_________________________
JohnV6
2006 Indigo Blue Roadster S1

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#559337 - 12/02/19 11:21 AM Re: Roadster Starter Motor [Re: John V6]
+8Rich Offline

Member of the Inner Circle

Registered: 15/12/09
Posts: 19475
Loc: Devonshire
That's a good one fixed John thumbs.
_________________________
Richard
1999 Indigo +8






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#559347 - 12/02/19 11:50 AM Re: Roadster Starter Motor [Re: John V6]
John V6 Offline

Member of the Inner Circle

Registered: 21/07/07
Posts: 13026
Loc: Suffolk
Yes Richard. I spent last week on holiday worrying about it.
The crazy part is the earth looked fine & was tight.
_________________________
JohnV6
2006 Indigo Blue Roadster S1

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#559358 - 12/02/19 01:23 PM Re: Roadster Starter Motor [Re: John V6]
Richard Wood Online   NoMood
Talk Morgan Enthusiast

Registered: 03/02/16
Posts: 1631
Loc: East Harling, Norfolk UK
Good result John. As the chassis is an important part of this high current circuit it may be worth checking the negative battery connection to it as well.

Ohms law dictates that a fixed resistance will create a volt drop proportional to current.
_________________________
Richard

2018 Roadster - Red/Magnolia - "Morton"
1967 Land Rover series 2a SWB
1960 Velocette Venom

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#559360 - 12/02/19 01:38 PM Re: Roadster Starter Motor [Re: John V6]
John V6 Offline

Member of the Inner Circle

Registered: 21/07/07
Posts: 13026
Loc: Suffolk
Yep, I made a mental note to self to look at all the earthing points tomorrow when I will have the time.
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JohnV6
2006 Indigo Blue Roadster S1

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