Finally got my first 510

[dieseldog49]

battery is already in the trunk so I would prefer to not replace the cables, if it were the alternator wouldn't the car not want to run at all?

[q-tip]

It will run off of the battery until there isn't enough voltage to power the ignition. Get a multimeter, of a voltmeter and see how much voltage there is when the car is running, if its less than 13 there is probly something wrong with the alternator

[graveltrapp]

Looks like in your pile of parts you have a spare filler neck and a alternator. Nice score on the the new rig.

[dieseldog49]

I must have mis-stated the problem, the car runs fine when bump started even though the battery is completely dead, so my assumtion is that the alternator is fine since the engine is clearly not running off the battery.

[q-tip]

Then your battery could be needing replaced, perhaps the water level is low in it?

[dieseldog49]

Ok battery is good, charged it over night and its fine. Pulled the alternator gonna get it tested. Anyone have a wiring diagram handy for a L20B (Yes I am going to search for it as well, but it cant hurt to ask :) )

[banzai510(hainz)]

put a volt meter acress the battery teminals while its running and tell us the voltage when running then turn on the lights and rev to 2k rpms and tells us.

 

Is there a different wireing for a l20 and a L16??????????? No the car wiring stays the same.

 

Page 181 in the Haynes Manual is the elelrtrical drawings. You have a Haynes Manual?

[izzo]

DD,

http://community.ratsun.net/topic/54639-mitchel-datsun-info-all-datsun-62-82/

 

Go there, download the rar file. Extract it, find wiring diagrams for all the datsuns!

 

[genkiracing]

Just saw this. Congrats man, and welcome. ^_^

[dieseldog49]

Ok, finally had some time to work on the 510, I did as you said and at idle I was getting 12.42 fromt he battery, at higher revs it was the same, so I went to the alternator and checked there. Same voltage so I figured the Alt was the problem, swapped it for another and it didn't change anything. I took the battery and the Alternator in and they both test out fine. Not sure where to go from here.

[banzai510(hainz)]

If by chance you have a spare volt reg lying around? I always do .

 

If anything ck the fuse box area reseat the plugs there.

I think you would get 12 volt on one of the pins of the T connector when key is ON.

 

Another guy on here had a bad wire under the tape by the volt reg I think. But I guess this would be ez to OHM out using a meter if the wire was bad.

 

Im only guessing now.

 

I had a 521 where the connection was bad in back of the instrument panel. I reseat the plug and then it charged up fine after that. I asusme the 12volts looped thru the instrument panel then went to energize the alternator. But it would pop a fuse when it did this. Im not sure it this would be the same for a 510 instrument wiring.

 

 

I assume your ignition light comes ON.

[dieseldog49]

Ok I was just out there and I noticed that my whole dash has stopped working, fuel gauge, blinkers, everythign. All of which was working fine before.

[banzai510(hainz)]

like I said ck fuses and clean connections or reseat connectors.

 

replace fuse if looks good but old. they break at the ends inside

[dieseldog49]

Ok gonna go buy some new fuses, also could you tell me what this is?

 

[q-tip]

Looks like a condenser for points ignition

[dieseldog49]

It was on my alternator.