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Another running problem, https://www.ausmini.com/forums/viewtopic.php?f=2&t=51243 |
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Author: | Bubbacluby [ Sun Mar 15, 2009 9:12 pm ] |
Post subject: | Another running problem, |
Hi all one of our cars has a running problem. When driving along at constant speed around town there feels like there is a slight jerk and go jerk and go jerk and go. The running sounds ok (not noticably missing or backfiring), it is ok on the uptake and the deceleration (was blubbering on deceleration but fixed that). (car is a non-worked 1ltr with single 1 1/4 su and straight through hotdog exhaust, no extractors) It is slight but enough to notice and be a bit annoying. would it be too big a gap in the points ( as they weren't set when replaced ![]() thanks for the replies in advance Brenton |
Author: | sitnlo62 [ Sun Mar 15, 2009 9:28 pm ] |
Post subject: | |
First Two things I would check would be. Spark Plugs and high tention Leads, Dave |
Author: | Kennomini [ Sun Mar 15, 2009 9:31 pm ] |
Post subject: | |
^^^^^^What he said, get new onesif their old-ish. |
Author: | TheMiniMan [ Sun Mar 15, 2009 10:05 pm ] |
Post subject: | |
I`ll bet that you have the 29D type distributor ,,, ??? with the vac advance hooked up,,,??? & the base plate is badly worn causing the points to open more, open less,, open more, open less etc etc etc as the vac advance mech pulls on the points plate it cocks it, (retards & advances the ign timing) as the revs fall, releasing the plate back down effectivly making a smaller points gap, hence revs raise once again (advances the ign timing) ,,, & so on & so forth Just a wild guess tho ![]() ![]() But if you`d like to test my theory,,, remove the vac advance,,, Plug the hole in the carb,,, (don`t worry about plugging the hole in the dissy,,, no need to for the time being) set the points gap to where it`s supposed to be (Approx 15thou) --- (making sure they`re in good condition while you`re there obviously) & then set the ign timing to the correct position (maybe about 5 or 7 deg BTDC) & then go for a run If i`m right then because the vac advance mech isn`t "acting" upon the worn dist base plate,,, so it shouldn`t surge Then remove your carby plug from the vac advance port,,, re-attach the vac advance hose & go for another run,,, if it surges like you have described again,,, then you need to either fix the dist base plate or get a new-er (or another) good distributor ![]() easy-peasy |
Author: | TheMiniMan [ Mon Mar 16, 2009 7:42 pm ] |
Post subject: | |
Sooooo,,,, any news about the running??? |
Author: | Bubbacluby [ Mon Mar 16, 2009 9:41 pm ] |
Post subject: | |
isnt the 29D dissy a coopers/Gt dissy without the advance (i think thats the number on my Gt one) No the vaccum advance on dads car isnt connected. My brother had a fiddle with it, he said something about a wire in the dizzy not touching properly, he also adjusted the points distance as well. they may have cleaned the plugs aswell. Dad took it to work waiting for him to come home to find out the verdict about how its running Thanks for the help Matt and others, Its always appreciated When i find out how it went will give another update Brenton |
Author: | carter [ Tue Mar 17, 2009 8:16 am ] |
Post subject: | |
hi fallas im bubba clubbys dad still having problems with this mini Iv cleaned and checked plugs and points fiddled with the points yet at low revs she still jerks around GOT ANY OTHER IDEAS FALLAS im almost ready to pull out whats left of my hair thanks |
Author: | Wombat [ Tue Mar 17, 2009 8:29 am ] |
Post subject: | |
I'd still follow Matt's advice and try a new distributor |
Author: | Bubbacluby [ Tue Mar 17, 2009 6:33 pm ] |
Post subject: | |
Dizzy was changed to a late clubman type and dad is now running much better. Thanks heaps for all your help Brenton |
Author: | sgc [ Tue Mar 17, 2009 6:52 pm ] |
Post subject: | |
Bubbacluby wrote: Dizzy was changed to a late clubman type and dad is now running much better.
But what about the car, is it running better? |
Author: | Bubbacluby [ Tue Mar 17, 2009 8:56 pm ] |
Post subject: | |
sgc wrote: Bubbacluby wrote: Dizzy was changed to a late clubman type and dad is now running much better. But what about the car, is it running better? hmmm haha opps yeah i meant to say dad says it is running much better |
Author: | DTrain [ Tue Mar 17, 2009 10:57 pm ] |
Post subject: | |
hahah the old fella now idles smooth ![]() |
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