15 replies to this topic

[rik_125]

Hello all

My 1981 998cc mini will not rev over 3000 RPM, its like a limiter has been reached

I have just had my Head replaced ( done about 200 Miles Since , dissy cap, plugs etc but it willn't rev over 3000RPM

The car is drivable until you get to hill were you just loose power

Does anyone have any ideas what this could be?

It has only started to happen over the last couple of days??

Many thanks

Rik

[Jackmorton]

Have you got Oil in your dashpot ?

[rik_125]

Hello JackMorton

Thank you for your reply

Whats a Dash point?

Thanks

[maggies_minder]

dash pot, not point, its the big chamber on the carb.

[sixtyeight]

how did it run before the head/dissy/plug work?

[rik_125]

Yeah we checked that and there is Oil in there

When you get to around 3000 RPM the car feels likes it stutters

Thanks

[rik_125]

Hi Sixty Eight

It run kinda the same

I only changed the plugs dissy etc today

The head was done about 200miles ago (10 days) and run perfectly

thanks

[jaydee]

You take the whole dizzy out and refit it? And how you timed it in?
Also recheck firing order:
http://www.theminifo...howtopic=139119

[sixtyeight]

yep my bet is on dissy timing...

[rik_125]

You take the whole dizzy out and refit it? And how you timed it in?
Also recheck firing order:
http://www.theminifo...howtopic=139119

Thanks for the link

I will double check in the morning

I replaced the rectifier and rotor arm. When reconnected the HT leads i did one at a time a matched what was there

Does anyone think there could be crap in the Carb?

Also my previous head was a leaded one and this ones an unleaded?

The guy i bought the mini from last year said he had a bag of lead beads in the fuel tank ( couldn't find thies when i check the other day)
Could this be cauising issues?

Cheers

[jeebz]

my money is also on ignition timing.

[rik_125]

my money is also on ignition timing.

Thanks

Is that easy to sort out?

Ive got the LGT on saturday lol

[jaydee]

Leaded head or not will actually make no difference on running.
It could be wrong timing or too lean mixture, but you said it was running ok before touching the dizzy..

[rik_125]

Leaded head or not will actually make no difference on running.
It could be wrong timing or too lean mixture, but you said it was running ok before touching the dizzy..

No i only chnaged the Dizzy as this was suggested by my friends dad who checked the old one and said it wasn't sparking strongly

We also fiddled with the mixture and that didn;t help

Thanks

[minimender]

Throttle cable hasn't slipped has it, make sure it pulls the carb wide open when the pedal is on the floor