My 510 won't stay running....

[MYDAILYROUTINE]

Ok, First off, it's been a very long day. I got an L20 in my 72 510. Got it started tonight, however, I have to hold the key in the start position for it to stay running. If I let go it dies. I pulled the ignition switch with key and all from my 620 thinking it was the switch but it still does the same thing. Any ideas would be appreciated, I know it's something stupid that I overlooked. Thanks everyone. :D

[banzai510(hainz)]

put the org switch back in.

 

now look at the blk/wht wire that goes to the ballest resisitor ,see if its hooked up or the ballast resisitor is broken

Simple fix

see if connections are tight

 

in START the Blk/blu wire gets 12volts

in ON position te Blk/wht wireshould get 12volts.

 

ck fuse

 

since you swapped the swtich I assume its not a bad connection there

[Guest 510kamikazifreak]

Points?

Bad Ballast resistor

[ripetomatoes]

any misfiring when it runs, or stuttering? how long do you have to crank before it starts?

[MicroMachinery]

If you are having to hold the switch in the start position(and your car is in fact running, not just cranking), you should be hearing an awful noise; this will be your starter colliding with the flywheel as it runs. If you don't hear that, then something's wrong w/ how you wired the starter up.

 

I'd investigate the wiring near the starter, or anywhere else wires were unhooked and hooked back up during the swap. Chances are that the ignition switch wasn't tampered with during the install... but only you know for sure.

[MYDAILYROUTINE]

Just got home from work. Going to start checking everything that has been mentioned. Thanks guys.Will keep ratsuners updated.

[datzenmike]

put the org switch back in.

 

now look at the blk/wht wire that goes to the ballest resisitor ,see if its hooked up or the ballast resisitor is broken

Simple fix

see if connections are tight

 

in START the Blk/blu wire gets 12volts

in ON position te Blk/wht wireshould get 12volts.

 

ck fuse

 

since you swapped the swtich I assume its not a bad connection there

 

The above.

 

You are only getting power to the coil while cranking. When the key returns to the RUN (or on) position power should be going through the ballast resistor to the coil.

[banzai510(hainz)]

forgeot toadd this just remove the starter wire so the starter does not engage

put a volt meter on the wires.(remove the wire where to connect and just put the volt meter on there)

 

If your a Idiot and might forget where the wires go,take a digital camera out there.

do one wire at a time

[MYDAILYROUTINE]

Woo hoo! It runs! Stupid ballast resistor...... Rebuilding the carb now. Thanks everyone for the help. It's guys like you who make Ratsun great. :cool: