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Running ON & ON
https://ausmini.com/forums/viewtopic.php?f=5&t=20754
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Author:  fwom moke [ Mon Jul 03, 2006 10:24 am ]
Post subject:  Running ON & ON

Have fitted a nissan pulsar dizzy d4r85 to my 1275.
I am getting a lot of run on. eg turn the key off but it doesnt want to shut down!
Whats my problem?

Author:  awdmoke [ Mon Jul 03, 2006 11:04 am ]
Post subject: 

Was it doing this before? If so, then your engine needs de-coking
(the carbon build gets hot & ignites the fuel).

If it started straight after you swapped dizzys, then you must have connected the coil +ve to battery +ve. It should be connected to a +ve "ignition" supply, i.e. the wire to the original coil that was only live when the ignition was on.

Author:  Lillee [ Mon Jul 03, 2006 1:02 pm ]
Post subject: 

It happens on mine too, I just stall it in 1st. When you get used to it, you can do it quite easily :wink:

Author:  Maxi23 [ Mon Jul 03, 2006 1:08 pm ]
Post subject: 

I changed the route of my fuel line from behind extractors to over the carbie....no more dieseling (running-on).

Author:  pristic [ Mon Jul 03, 2006 3:34 pm ]
Post subject: 

Does everyone with a Pulsar dizzy get this run-on ??? No way... I doubt it.

There must be some way to fix it.
Darn I wish I remember, my old mans 1979 Falcon did it, until we... argh, cant remember!

Peter.

Author:  awdmoke [ Mon Jul 03, 2006 3:50 pm ]
Post subject: 

I have one & it's never given a problem.

Have you blocked the vacuum advance line when you swapped dizzys? :?

Author:  drmini in aust [ Mon Jul 03, 2006 4:38 pm ]
Post subject: 

No fault of the Pulsar dizzy, when off, it's off.... :lol:
I have 2 running Pulsars. One is 10.7:1, runs on all the time, even on 98 unleaded.
The other is 9.4:1, never runs on, even on 95 unleaded...

There is an `anti-run on' valve available in UK, but why bother. Just stall it, as Chong said. 8)

Author:  TK [ Mon Jul 03, 2006 4:54 pm ]
Post subject: 

anti run on valves are available of HX-HZ Holdens too.

Author:  9YaTaH [ Mon Jul 03, 2006 5:31 pm ]
Post subject:  Ahhhh

TK wrote:
anti run on valves are available of HX-HZ Holdens too.


As a former HX owner, they would be Lemon scented ones :lol:

Author:  fwom moke [ Mon Jul 03, 2006 5:39 pm ]
Post subject: 

No i havnt blocked the vac advance line.
Vac advance is connected to the dizzy.

Author:  fwom moke [ Mon Jul 03, 2006 5:40 pm ]
Post subject: 

Engine has just been rebuilt so doesnt need de coking!

Author:  awdmoke [ Mon Jul 03, 2006 5:46 pm ]
Post subject: 

This wasn't happening before the Pulsar dizzy, right?

Sometimes you can get more run on if their is a vacuum leak.
Pull the tube off the manifold end & block with your thumb.
See if it makes a difference :idea:

Author:  fwom moke [ Mon Jul 03, 2006 5:51 pm ]
Post subject: 

And no coil + is connected through ignition and not straight to battery.
Am i timing it correctly?
My procedure is this.
- i Disconnect vac advance from dizzy and block off with screwdriver
- Using a strobe I run the engine up to 4000+ and align the new timing mark with the first pointer eg 0.
(the new timing mark is 24mm from the original mark measured in a clockwise direction on the pulley)
Just tried sucking the vac line to the diaphram it pulls the plate around inside the dizzy but wont hold the vac pressure, seems like i might have a leak in the vac advance diaphram.
The running on occurs even with the vac line blocked off with the screwdriver!

Author:  simon k [ Wed Jul 05, 2006 10:30 pm ]
Post subject: 

has anyone asked what sort of fuel you are using? if you're using shitty fuel, retard the timing

Author:  TheMiniMan [ Wed Jul 05, 2006 10:47 pm ]
Post subject: 

You most probly have it idling way too high,,,back that down & also maybe drop the ign advance back a tad too

both will help

Matt

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