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Battery acid through engine Bay! Help!


Guest Anonymous

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Guest Anonymous

Hiya Guys,

I just got my '02 back with a new (rebuilt) motor and after getting the beast home i inspect the engine bay & find liquid all over the place & a hissing sound, i though maybe a coolant leak but after finding none, my hands go ichy & i realise the hissing is from the battery. So i clean everything up (there goes the nice engine paint job) & test - if i give the engine a bit the battery starts to bubble. It's a new battery, and a rebuilt alternator.

Is this overcharging? and would it be the regulator not functioning or not hooked up? Will my battery be damaged from this?

Help me save my engine bay,

Thanks

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Guest Anonymous

Put a volt meter on the battery with the engine running, should read no more than 13.5

Where is the acid leaking from? From the fill caps? Even an overcharging battery sould not pour acid out and it should take a good while before it even begins to bubble....

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Guest Anonymous

Yes, the acid comes from the fill caps, it bubbles out after a couple of minutes driving, after 20 mins there was acid all over the left hand side, the fan would have blown it around i assume.

I will test the volts tonight thanks.

Is the alternator constantly charging the battery? or is it only as required?

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Guest Anonymous

You either have too much water in your battery or the battery is being overcharged. When the battery charges, it heats up considerably. This will force fluid out of the caps if it has been overfilled. Is it possible that someone added water to your battery recently?

Also, nominal charging voltage for an original 02 charging system is +14V, and it would not be unusual to see upwards of +14.5V at the battery, with the motor spinning at >1200RPM, if the battery has been somewhat discharged. Your battery will not be overcharged unless system voltage exceeds the mid- to high +14V range for an extended period of time.

First, check voltage at the battery with the motor off. A fully charged lead acid battery will read +12.6V. Then check voltage at the battery with the motor running.

Chris B.

'73 ex-Malaga

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