Batteries-how strong?
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Senior User
Joined: Mar 2004
Posts: 115
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From: Georgetown Tx
Batteries-how strong?
I think I am getting air in my fuel. (i've got a return line kit to put on)
Checked all my glow plugs- they measure ok- glow plug controller stays on for 6 secs, 83 degrees in Tx.
I have only been getting it to start by pressing and holding the pedal all the way down and cranking for 10secs.
This symptom has been getting worse (I am putting the return kit on NOW)
But today it would not fire at all...
Notice that cranking is a bit slower. But it fired with an ether shot.
Batteries measure 12.71 and 12.73 volts...
I dont know the age of the batteries, one is for sure fairly new (looking).
I searched the forum before writing...
How fast does the motor have to spin/how strong do the batteries have to be?
I know this is a subjective question, but.... thanks to dave and festus for the help. Jery
Learning Diesel is Like Learning a new language! boy am I slo
Checked all my glow plugs- they measure ok- glow plug controller stays on for 6 secs, 83 degrees in Tx.
I have only been getting it to start by pressing and holding the pedal all the way down and cranking for 10secs.
This symptom has been getting worse (I am putting the return kit on NOW)
But today it would not fire at all...
Notice that cranking is a bit slower. But it fired with an ether shot.
Batteries measure 12.71 and 12.73 volts...
I dont know the age of the batteries, one is for sure fairly new (looking).
I searched the forum before writing...
How fast does the motor have to spin/how strong do the batteries have to be?
I know this is a subjective question, but.... thanks to dave and festus for the help. Jery
Learning Diesel is Like Learning a new language! boy am I slo
Lead Driver
Joined: Mar 2006
Posts: 5,104
Likes: 1,517
From: western SD
If you can count the revs when the engine is cranking it is to slow. Check all battery cable connections both pos. and neg. they need to be clean and tight on both ends of the battery cables.Extended cranking can burn the starter up, 20 seconds max cranking with 2 minutes cool down before cranking again.
Methanoholic
Joined: Mar 2009
Posts: 6,442
Likes: 8
From: Maine (NorCal Native)
Generally Diesels take between 100 and 200 RPM to start reliably, faster the better. (to a point)
As already stated, using a volt meter to test battery voltage is very misleading, they can have full voltage yet be junk!
They MUST be tested under load to determine the condition ...
A DIY method that give a better clue, is to test the voltage with everything drawing power ... Lights, Blowers, Starter ... More items on the better.
-Enjoy
fh : )_~
As already stated, using a volt meter to test battery voltage is very misleading, they can have full voltage yet be junk!
They MUST be tested under load to determine the condition ...
A DIY method that give a better clue, is to test the voltage with everything drawing power ... Lights, Blowers, Starter ... More items on the better.
-Enjoy
fh : )_~
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