Quote:No way to stop the engine? What happened?

Your mate, who had been within arms reach of the ignition so he could fire it up ran away & left you with it?
He locked the keys in the car & nobody could reach the ignition switch?
The ignition switch jammed in the ON position & wouldn't turn off?
There was a short in the ignition circuit & the ignition was permanantly ON?
Everybody was dumbstruck to the point of being imobilised?

How did it end?
Did the engine self destruct as it was reving "at the limit" & there was NO WAY you could stop it, or did the car catch fire & burn to the ground

Somehow I think there is a bit more to the story than this

Thanks for the awesome info Dodgeman and Tommo.

I have just put a kit through the carby and noticed the anti-dieseling valve has the wires pulled out. Put the carby back on and the car runs as rough as with whiteish/blue smoke puffin out (didn't have this prior to carby clean). Thinking I bought a 'lemon' at this stage. Lucky they are reasonable easy to fix. Just need the knowledge....

Cheers

lol

while i was working on my car, i had the carb off the inlet and the fuel line just hanging over the inlet
a dumb friend of mine said fire her up i want to see what happens, while me trying to convince him it wont fire up, it will just stall
i cranked the engine and ended up with a huge fire out of the inlet with the motor revs at the limit and no way to turn the engine off

u can take out the plunger
or cut it in half
then its like std
they also did it so it can run lean at idle
with out running on. ADRs

The anti dieseling device is a solenoid so it needs power to operate. It needs this power whenever the ignition id 'ON' but at no other time.

The purpose of this device is to allow a spring loaded 'needle' to plug the idle circuit whenever the engine is turned off. Even if the plugs are glowing white hot, this device cuts the flow of idle fuel to the engine & it can not 'run-on' without fuel.

It also prevents unburned hydrocarbons from entering the exhaust system, to be ejected into the atmosphere on the next startup.

If it is disconnected, the idle circuit is closed & it is necessary to increase the idle speed so that the engine can draw fuel from the transition port. This fuel is calibrated to be mixed with the idle fuel for correct mixture, but without the additional fuel from the idle port it is running lean, & therefore, badly.

I have been using a stock carb on my 1200 for years & I love it.
It is correctly sized for smooth running, great economy, & peppy performance without being over the top.

Those clever little Datsun engineers definately knew what they were doing when they designed these.

All the whoring aside
Mine has the same problem, anyone know where wound I get one from (anti-dieseling valve that is)?
I just got my ute and it was running pretty bad, had the throttle screw wound out 7 full turns and the idle right up. I'm figuring that this was done to try and compensate for the anti-dieseling valve not being connected, hoping so anyway.

Cheers

This is a new dimension of whoring : help & whoring at the same time!
But yes you have to be right about the positive to the solenoid wire.

how about we sender you somewhere?

oh your in perth, sentence served.

pretty sure it powered as block is earthed to car (so carby too)

Being a solonoid you are probably right Mik, I must have been thinking about sender units!