Ausmini
It is currently Tue Jul 22, 2025 2:13 am

All times are UTC + 10 hours




Post new topic Reply to topic  [ 24 posts ]  Go to page Previous  1, 2
Author Message
 Post subject:
PostPosted: Thu Dec 06, 2012 10:36 am 
Offline
religious status
religious status
User avatar

Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39755
Location: near Baulkham Hills, NSW
Also check the points gap, they do weird things when way too close!
When my S ones got too close it would idle OK, ran like a dog to 4000, then pulled like a train to 7500. :?

I fixed that problem soon after by binning the Lucas dizzy and fitting a Pulsar electronic one. 8)

_________________
DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:


Top
 Profile  
 
 Post subject:
PostPosted: Thu Dec 06, 2012 11:26 am 
Offline
This space for rent
User avatar

Joined: Thu Feb 08, 2007 12:40 pm
Posts: 5455
Location: Melbourne
simsy98 wrote:
65deluxe wrote:
are you using the choke when cold? too lean?


I do use it however it doesnt seem to need it. It will usually start without it however may take one or two goes. But with choke it will start up almost every time. Could this possibly mean it is too lean? or still look at the condensers and dizzy caps.


It's worth noting that a Mini is supposed to need the choke when starting if its mixture is set correctly. Once the temp needle starts to move however you should be able to run smoothly without any choke at all throughout the rev range.

If you need the choke out at all when warm to make reasonable power, then your mixture is too lean which means you've probably got the wrong needle in your carb.

_________________
Simon

The adventures of an owner builder in the Tallarook Ranges

Image


Top
 Profile  
 
 Post subject:
PostPosted: Thu Dec 06, 2012 11:56 am 
Offline
848cc
848cc
User avatar

Joined: Wed Jul 11, 2012 2:08 pm
Posts: 144
Location: Caulfield, Victoria, Australia
TheMiniMan wrote:

does it cough & splutter to the point where it`s undrivable?

as in... can you drive along the freeway ok? can you go up hills ok?

or does it just carry-on so much that you can`t actually drive the car anywhere?

because there are quite a few things which can cause what you`re describing,,, just need a bit more detail to nail it for you over the net

Could be -->

lean mixture on acceleration which could simply be not enough oil or too thin dash-pot oil

not rich enough mixture needle or not strong enough spring

Not enough ign coil reserve

condensor crook (like Tony-convertablemini suggested),,, even a loosly mounted condensor (screw not tight enough) or a distributor earth strap not hooked up inside the dizzy to the mounting of the condensor or body of dizzy will do it

or a little bit of water in your carby float bowl can cause similar symtoms

& there are many many more reasons for these sorts of symptoms,,, so let us know if the car is at least drivable & whether or not there is good power hi in the revs because this will eliminate a few things straight away... like if it revs well (once it`s up in the revs) with good power there... then i`d eliminate both condensor & coil as culprits because if it were any one of these two then it wouldn`t rev well at all & it would probably want to actually stop running if you kept your foot into the throttle

if you can baby the revs up & get it reving & it goes hard then,,, well then i`d be looking at en-richening the mixture on the acceleration section but adding oil into your dash-pot,,, adding maybe thicker oil,,, or swapping the srping out for a stronger one or simply en-richening the mixture nut a bit if it`s not too bad

if it were an intermittant problem,,, like it does it only now & then & not all the time then i`d maybe look at water in the float bowl or condensor loose or even a loose power wire on your solenoid (The one that goes to the ign switch)

ok??? more info please??? yeah???


ok so i did a few tests. I need to start it with the choke otherwise it doesnt start. I tried reducing the choke slowly but the motors rpms would slow down to a point where it would stop. It took about 4-5mins before i could have no choke. Also when the choke is on than it revs correctly. Doesnt struggle to go through it quickly. However with no choke what so ever. If i tap the accelerator it the rpms will drop and almost stop. If i feather it i am able to get past this and the top end revs work perfectly. It just seems to be that initial point of acceleration which doesnt want to work. Does this mean my mixture is to lean?

If i continued as it is now the car is un-driveable. It just doesnt seem to have enough power and carries on to much. Should i tried en-richening the mixture not just a bit to see if it fixes the problem?

Thanks for the help. You guys are life savers!

_________________
1978 Leyland Clubman S


Top
 Profile  
 
 Post subject:
PostPosted: Thu Dec 06, 2012 4:28 pm 
Offline
848cc
848cc
User avatar

Joined: Wed Jul 11, 2012 2:08 pm
Posts: 144
Location: Caulfield, Victoria, Australia
bigjobs wrote:
I had exactly what you described. I put a tank of 98RON in and a full bottle of Wynns fuel system cleaner. This was a cheap fix for me. Now I idle at the lights and take off full tilt with no worries.

edit: your problem as described, only happened to me when I was getting up to operating temps. Once I was at operating temp the problem would go away.


Did this today seems to have fixed it. Not sure if its because the motor was warm though. Ill check it when I get home tonight and hopefully it's all good otherwise ill be checking all the other suggestions. Thanks for the help guys

_________________
1978 Leyland Clubman S


Top
 Profile  
 
 Post subject:
PostPosted: Thu Dec 06, 2012 7:47 pm 
Offline
848cc
848cc
User avatar

Joined: Wed Jul 11, 2012 2:08 pm
Posts: 144
Location: Caulfield, Victoria, Australia
seems as though it hasnt actually fixed it. Now onto the condenser and dash pot oil?

_________________
1978 Leyland Clubman S


Top
 Profile  
 
 Post subject:
PostPosted: Thu Dec 06, 2012 7:50 pm 
Offline
Causing or creating vexation

Joined: Wed Jul 21, 2004 10:32 pm
Posts: 19124
One thing at a time. Make too many changes at once and you won't know what fixed it or what made it worse.


Top
 Profile  
 
 Post subject:
PostPosted: Thu Dec 06, 2012 8:18 pm 
Offline
848cc
848cc

Joined: Sat Sep 08, 2007 7:28 pm
Posts: 231
Can you post a video clip?


Top
 Profile  
 
 Post subject:
PostPosted: Fri Dec 07, 2012 7:10 pm 
Offline
848cc
848cc

Joined: Sun Oct 21, 2012 4:06 pm
Posts: 17
Location: Sydney
are you leaving the choke on until it is warm before you turn it off? I think you're pushing it in too early.


Top
 Profile  
 
 Post subject:
PostPosted: Sat Dec 15, 2012 7:51 pm 
Offline
848cc
848cc
User avatar

Joined: Wed Jul 11, 2012 2:08 pm
Posts: 144
Location: Caulfield, Victoria, Australia
Thanks for all the help. Sorry about the late response however i have managed to fix the problem. I mounted the condenser in a more secure location, made the mixture slightly richer and am leaving the choke on slightly longer now and it seems to be running perfectly. Thanks all for the help. Glad one of the problems is resolved.

_________________
1978 Leyland Clubman S


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 24 posts ]  Go to page Previous  1, 2

All times are UTC + 10 hours


Who is online

Users browsing this forum: No registered users and 92 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  

© 2016 Ausmini. All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.