From: rertman@ix.netcom.com
Date: Tue Aug 05 2003 - 07:24:16 PDT
Tony:
Sometjning's very strange. When you crank the engine, the battery
voltage should drop a lot more than 1.8 V. Stop by your local auto
parts store and get one of those handy amp meters that you clip
onto the positive battery cable and see hoe much current the starter is
pulling while you crank the engine. The meter couples and measures
magnetically, so it won't damage your cable. I'm not a MUTT expert, but
I think the battery voltage should drop about 10 volts during engine
cranking.
And I agree that the ignition system shouldn't be so finicky that it
stops working at 23 V. I trust you did all the obvious stuff and
checked for spark and fuel while cranking?
Good luck,
Dick
"Antonio Regazzoni (Home)" wrote:
>
> Hi list,
>
> I think I'm having the same problem as Rich Sherman. I have a M151A2 with two good batteries. They are not charged 100% but I can measure 12.6 V on both of them. This makes 25.2 V total. When I crank the engine I can measure 23.4 V. The engine doesn't start !
>
> I cannot believe that the ignition system is so sensitive that with 23.4 V doesn't give enough sparks to start the engine. I'm thinking that the problem could be in a big voltage drop between the batteries and the ignition coil, or a bad coil or capacitor.
>
> I will measure the input voltage at the coil and check all the electrical connections from the battery to the ignition system.
>
> Any comments ?
>
> Thanks,
>
> Antonio Regazzoni,
> 1944 MB
> 1974 M151A2
> 1975 Pinzgauer
>
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