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 earthing problems (currently 1,344 views) |
| Gareth Thomas |
| Posted on: November 27th, 2005, 11:35:03 |
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Baby Member
Location: burton on trent
Posts: 41
Reputation: 0 (tot: ) |
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hi all, quick question
is it just me or does everyone have real difficulties with earthing thier marcos's???
my battery seems to drain, and she's really sluggish to start.
help and/or advice would be greatly appreciated. |
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| Neil KilBane |
| Posted on: November 27th, 2005, 16:37:29 |
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Maximum Member2
just a little fine tuning left to do.
Location: Newtown Forbes, Ireland
Posts: 1,416
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Hi Gareth,
I am at this stage in the electrics at the moment, and have been advised to run the earth cable directly to the engine block first and from there to the negative side of the loom. |
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| Gareth Thomas |
| Posted on: November 27th, 2005, 17:50:17 |
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Baby Member
Location: burton on trent
Posts: 41
Reputation: 0 (tot: ) |
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| i have a good earth strap on the block which goes directly back to the battery but still she doesn't seem to be very happy. |
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| Neil KilBane |
| Posted on: November 27th, 2005, 19:57:33 |
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Maximum Member2
just a little fine tuning left to do.
Location: Newtown Forbes, Ireland
Posts: 1,416
Reputation: 0 (tot: ) |
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Elaborate on the "really sluggish to start" end of things.
If the battery is being drained, then there must be something drawing current from the battery, try removing all the fuses and see if it still drains the battery, this way you can eliminate each different circut. |
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| Gareth Thomas |
| Posted on: November 27th, 2005, 21:45:28 |
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Baby Member
Location: burton on trent
Posts: 41
Reputation: 0 (tot: ) |
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"really sluggish to start"
sometimes she turns over really slow then for no reason the starter motor will speed up and she'll fire, strange i know, tried changing the starter motor and the battery but to no avail, and the battery drains so slowly it's not noticable unless left for a few days. |
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| admin |
| Posted on: November 28th, 2005, 12:22:29 |
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 Administrator
Location: Maidenhead, UK
Posts: 2,377
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Gareth, it may well be worth cleaning the battery terminals and connectors with steel wool or abrasive paper, and possibly the connections between the battery cables and terminals if they are the screw-on types. You can use a voltmeter (or multimeter) to find out where the biggest voltage drop is around the circuit while you are trying to start the engine. Make sure all the other terminals are tight and the starter motor is tightly screwed together and bolted to the flywheel housing.
I had a bad starting problem with the Jem and cleaning up the battery terminals did the trick after I'd tried just about everything else. |
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| Gareth Thomas |
| Posted on: November 28th, 2005, 12:26:47 |
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Baby Member
Location: burton on trent
Posts: 41
Reputation: 0 (tot: ) |
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| lolo as per usual it sounds like it's always the last thing to try that fixes the problem lol yes i'll try that, hopefully get it sorted. but definately some good ideas to be going on with. thanks alot. |
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| Allan Brown |
| Posted on: November 28th, 2005, 13:09:07 |
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Administrator
Location: Billingshurst, UK
Posts: 452
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Have you got a battery cut off key?
Sometimes the terminals inside that can get dirty and cause some voltage to be dropped across that. You will only notice it when you try and draw a large current through it i.e. trying to start it. Try bypassing the cut off key. |
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| Gareth Thomas |
| Posted on: November 28th, 2005, 13:55:50 |
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Baby Member
Location: burton on trent
Posts: 41
Reputation: 0 (tot: ) |
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| no i've not got a key on that, but i am getting a drop in battery power, when starting, using lights at night (even at high revs the battery charge gauge does not look to healthy), so obviously i must have some grubby terminals somewhere, thanks |
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| admin |
| Posted on: November 29th, 2005, 12:00:56 |
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Administrator
Location: Maidenhead, UK
Posts: 2,377
Reputation: 1 (tot: 1) |
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| The one voltage I didn't check when going round the circuit was that between the battery post and the battery terminal. I did have a pair of those snap-on terminals with plastic covers but I decided to ditch them because the cable connections weren't very good and the biggest drawback is that you can't put jumper leads on them. Unfortunately the only other set I could find were aluminium terminals which are prone to oxidation. Brass ones are much better. |
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Mini Marcos Forum > General Boards > Mini Marcos > earthing problems
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