Jump to content


Photo
- - - - -

Starts When Key Turned, Release The Key Cuts Out ...


  • Please log in to reply
11 replies to this topic

#1 Tripyrenees

Tripyrenees

    Mini Mad

  • Members
  • PipPipPipPip
  • 177 posts

Posted 08 November 2019 - 01:00 PM

Hello again, 

 

Again, and again xD ! 

 

My mini is starting to get the better of me, after filling up by mistake with 98 petrol, then fuel pipe filling up with crude from the tank, and sticky dashpot piston, i have yet another issue and one that i can't or to tired to figure out .... 

 

The mini starts fine when i turn the key, as long as the key is forced round (the starter motor engaged) it revs up fine, as soon as i release the key the engine cuts out. 

 

Any ideas ? 

 

Thanks in advance for any help :) 



#2 MiniMadRacer

MiniMadRacer

    Mini Mad

  • Noobies
  • PipPipPipPip
  • 143 posts
  • Location: Essex

Posted 08 November 2019 - 02:20 PM

What year / model is the mini



#3 Tripyrenees

Tripyrenees

    Mini Mad

  • Members
  • PipPipPipPip
  • 177 posts

Posted 08 November 2019 - 03:39 PM

It's a 25th edition but with a 1275 from a 1992 probably (previous owner thought it was still a 1000 xD) , HIF 38 carb 



#4 Ethel

Ethel

    ..is NOT a girl!

  • TMF Team
  • PipPipPipPipPipPipPipPipPipPipPip
  • 23,038 posts
  • Local Club: none

Posted 08 November 2019 - 05:37 PM

The obvious cause, if it has ballasted ignition, is that there's no ballasted supply. It'll start on the ballast bypass which the solenoid connects as it connects the motor.

 

See if the coil's live with just the ignition turned on. It's dark so you'll see the sparks  :D



#5 hunterg30

hunterg30

    Speeding Along Now

  • Members
  • PipPipPipPipPip
  • 305 posts

Posted 08 November 2019 - 05:49 PM

Sounds like it's the switch , check the plug on the end of it , might have come loose

#6 Dusky

Dusky

    Up Into Fourth

  • Members
  • PipPipPipPipPipPipPipPipPip
  • 4,954 posts
  • Location: Belgium

Posted 08 November 2019 - 06:57 PM

Whats wrong with 98?

#7 floormanager

floormanager

    Mini Mad

  • Members
  • PipPipPipPip
  • 157 posts
  • Location: Haywards Heath, West Sussex
  • Local Club: Mini Club Sussex

Posted 08 November 2019 - 08:10 PM

Ditto for the ballast wire (pink coloured).  There will be two wires in the same connector going into the + on the coil, a pink and a yellow and white I believe.  The pink wire has about a 3 ohm resistance.  It probably has a break somewhere. An article is here

http://waynesminipro...ng-ballast.html



#8 cal844

cal844

    Crazy About Mini's

  • Members
  • PipPipPipPipPipPipPipPipPipPip
  • 6,840 posts
  • Location: Ballingry, Fife
  • Local Club: TFMOC

Posted 08 November 2019 - 08:17 PM

Check for volts at the coil end of the ballast wire (Pink/white) wire, any lower than 9 and you have problems.

Ideally youd remove the ballast wire altogether and replace with standard wire and a 12v coil.

#9 Tripyrenees

Tripyrenees

    Mini Mad

  • Members
  • PipPipPipPip
  • 177 posts

Posted 08 November 2019 - 09:07 PM

Thanks for all the ideas, i went out and wiggled all the cables (off and back on) from solenoid to starter motor and coil, but the booster on and it started perfect ! i'll do the proper tests tomorrow with the volt meter when the 'sun' is up :) 

Must have been a duff cable, with go through them all, i didn't see a pink and white though, must have faded over the years or been changed out already 

 

Thanks again :) 



#10 GraemeC

GraemeC

    Crazy About Mini's

  • TMF+ Member
  • PipPipPipPipPipPipPipPipPipPip
  • 5,295 posts
  • Location: Carnforth

Posted 08 November 2019 - 09:16 PM

Not pink and white.

One is pink, the other is white & yellow

#11 cal844

cal844

    Crazy About Mini's

  • Members
  • PipPipPipPipPipPipPipPipPipPip
  • 6,840 posts
  • Location: Ballingry, Fife
  • Local Club: TFMOC

Posted 08 November 2019 - 09:54 PM

Not pink and white.

One is pink, the other is white & yellow

Actually they are white& pink and white & yellow. Quoted from my 1989 mayfair and the 69to88 haynes

If it's a ballast resistor to live ot will be a white and pink wire with a white and yellow to the starter solenoid

Edited by cal844, 08 November 2019 - 09:57 PM.


#12 Ethel

Ethel

    ..is NOT a girl!

  • TMF Team
  • PipPipPipPipPipPipPipPipPipPipPip
  • 23,038 posts
  • Local Club: none

Posted 09 November 2019 - 01:17 AM

The pink and white is the most likely culprit. If it isn't on the coil +ve it might be on the solenoid terminal that is also connected to the coil.




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users

Mini Spares