Will a weak battery cause starting problems

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pat55
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Will a weak battery cause starting problems

Postby pat55 » Mon Feb 24, 2020 3:58 pm

I'm having starting problems on my ym2210, I checked the fuel side and it seams ok, I tested my battery and Altenator only get 4.6 volts. Although it is cranking the motor , Is the battery a likely cause for not starting ?

Aaron
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Re: Will a weak battery cause starting problems

Postby Aaron » Mon Feb 24, 2020 5:49 pm

4.6 volts is too low to crank the engine over so I suspect something else is wrong there. Where/how are you testing to get that number?

To answer your question, yes, a low battery can cause an engine to not start. Diesel require compression (around 400-500psi) to ignite the diesel & start. All piston rings will leak air. The slower the engine spins- the more time there is for the air to bleed out of the cylinders and not build compression.

PatrickHanna
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Re: Will a weak battery cause starting problems

Postby PatrickHanna » Tue Feb 25, 2020 7:30 am

Your battery could be fully charged and good and still be tough to start, especially if it is cold, if the battery is too small. I had a lot of problems with starting in the cold even with a fully charged battery. I measured the area that the battery sits and then I went and bought the biggest battery that would fit in there and I haven't had an issue since.

pat55
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Re: Will a weak battery cause starting problems

Postby pat55 » Tue Feb 25, 2020 2:50 pm

Aaron -I was testing right at the battery and the altenater- both read 4.6 V
Sounds like it's not cranking fast enough and maybe losing air/compression like you said.
I'm going to try a new battery and get back to you
Thanks

winston
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Re: Will a weak battery cause starting problems

Postby winston » Tue Feb 25, 2020 6:36 pm

Hard for me to believe you could get it to turn over with 4.6v.

pat55
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Re: Will a weak battery cause starting problems

Postby pat55 » Sun Mar 01, 2020 11:06 am

I replaced the battery and it is running now.

winston
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Re: Will a weak battery cause starting problems

Postby winston » Mon Mar 02, 2020 6:42 am

pat55 wrote:I replaced the battery and it is running now.


Good deal!


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