flak monkey
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| posted on 19/5/06 at 11:49 AM |
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Seized DCOE idle adjustment screw
Any tips for unseizing a stuck idle adjustment screw on DCOEs? Only one is stuck, the other 3 are fine...
Usual spray with penetrating fluid and leave to stand trick? Or is there a better way with these?
TIA
David
Sera
http://www.motosera.com
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rpsmith
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| posted on 19/5/06 at 11:53 AM |
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Try giving it a couple of blows with a hammer, it usually releases the thread
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rpsmith
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| posted on 19/5/06 at 11:55 AM |
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Look on Pumaracing website under "Tool Use Techniques"
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flak monkey
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| posted on 19/5/06 at 01:04 PM |
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Cheers 
This might have to wait until i get home... I dont want to whack it too hard as its only into the die cast body of the carb! 
Sera
http://www.motosera.com
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02GF74
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| posted on 19/5/06 at 01:29 PM |
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I'll look it up on the book; worst case I seem to recall is you drill then pick out the threads, not want you want to hear I guess.
A little bit of heat should help - maybe put in oven so it is heated up evenly to avoid distortion? (I'll check book on that idea too)
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flak monkey
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| posted on 19/5/06 at 03:18 PM |
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Which book have you got? I only have the haynes weber book and its as helpful as ever 
Oh and it seems the starter circuits are jammed as well...doh! Though I have heard this isnt a problem as they arent really needed anyway?
Cheers,
David
Sera
http://www.motosera.com
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DarrenW
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| posted on 19/5/06 at 03:21 PM |
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What is that avatar all about????? trying to show that Goths do take showers and shave armpits?????
Do you shave yours!!!
Bring back the bondaged nympho!
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flak monkey
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| posted on 19/5/06 at 04:33 PM |
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Better?  
Sera
http://www.motosera.com
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britishtrident
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| posted on 19/5/06 at 08:56 PM |
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Heat soak it in boiling water -- body is alloy expands more than the screw.
Failling that try soaking it in coke or Pepsi for 24 hours -- works with stuck BMW diesel injectors.
[Edited on 19/5/06 by britishtrident]
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02GF74
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| posted on 20/5/06 at 08:51 AM |
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right - you mena the idle mixture screw - the one to set idle speed is in the steel cam an not in teh body of the carb?
book is speedpro.
summary:
it says these screwsnever need to be adjusted.
but the thread is fine and easily damaged.
if cannot undo, grind the head off (hm, sounds easy that!  )
then usually the screw itself is loose I can concur ith this wehn reoving bolt for FWH)
I'd get a scriber and clean/scrape around the screw head edge so that penetrating fluid can get it - in my experience it is the screw head
expanding due to rust that prevents it being undone.
Have you mullered the slot yet? You should be able to recut it with a dremel tool.
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Macbeast
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| posted on 20/5/06 at 09:15 AM |
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Flak
Glad you've changed back, I missed the old avatar.
I could have looked for your old posts but that would have been really pervy, no ?
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britishtrident
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| posted on 20/5/06 at 09:51 AM |
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quote:
Originally posted by 02GF74
snip snip
it says these screwsnever need to be adjusted.
snip snip
Titter yea not !
Just try getting a road car on 40s to idle properly with them badly set. On a competition car they don't matter that much but on a road car that
has to idle at a reasonable RPM that won't frighten the horses they are needed.
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flak monkey
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| posted on 20/5/06 at 12:05 PM |
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Yes ye olde avatar returns once again due to several requests...perves the lot of ya
Pic shows offending mixture screw circled in red. Its been soaking in pentrating oil for about 24 hours now cant budge it with a screw driver.
Coke sounds a good idea. Might help those stuck chokes too... could be messy though
Got 3 of the 4 cold start plungers out. One still stuck at the moment.
I'm getting there! Patience is a virtue, only I dont have any!
 
Rescued attachment Offending item.jpg
Sera
http://www.motosera.com
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