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Author Topic: starter motor amps  (Read 1561 times)

Offline dubslug

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starter motor amps
« on: 16 January 2010, 16:00 »
hey guys, does anyone know what kinda amps the starter motor should be drawing on start up??
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Offline jezza16v

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Re: starter motor amps
« Reply #1 on: 16 January 2010, 21:16 »
Depends on whether starting from cold or warm but 300-450A intantaneous would be about right, perhaps 200 once turning over.
« Last Edit: 16 January 2010, 21:32 by jezza16v »
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Offline dubslug

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Re: starter motor amps
« Reply #2 on: 16 January 2010, 21:26 »
was cold..... mine was pulling anywhere from 3.1 to 6.2
guessing that would be 310 - 620 amps???
what happens is starter spins stops as if dead battery then fires up
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Offline jezza16v

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Re: starter motor amps
« Reply #3 on: 16 January 2010, 21:34 »
Which engine do you have?
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Offline dubslug

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Re: starter motor amps
« Reply #4 on: 16 January 2010, 21:38 »
i have a 2l 2e block....
running mk2 diesel starter motor
std gearbox
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Offline mattneck(Beavis)

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Re: starter motor amps
« Reply #5 on: 16 January 2010, 21:46 »
lazy battery, possible worn starter bush in the bellhousing..
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Offline dubslug

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Re: starter motor amps
« Reply #6 on: 16 January 2010, 21:50 »
battery is brand new, have tried 2nd second hand ones too...
can starter bush be repaired???
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Offline jezza16v

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Re: starter motor amps
« Reply #7 on: 16 January 2010, 22:22 »
A diesel starter may pull a bit more current as its designed to turn something with 20:1 compression ratio, but sounds like you may have a bad connection on the back of the starter, a bad earth down behind the battery or on the gearbox or possibly your timing is way too advanced and the engine is firing too early almost stopping the engine from turning over........... :undecided:
I would check the electrical connections and earths first then look at ignition timing.
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Offline dubslug

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Re: starter motor amps
« Reply #8 on: 16 January 2010, 22:27 »
this seems to have happened since the bad weather....
its been fine for abt a year starting wise, timing hasnt been touched, although i did play with air flow mass sensor...
both connections on starter motor have been checked, all earths cleaned up etc

its confusing me as it doesnt always happen
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Offline jezza16v

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Re: starter motor amps
« Reply #9 on: 16 January 2010, 22:31 »
What fuel injection system?
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