Hello! Log in or Register   |  Help  |  Donate  |  Buy Shirts See all banner ads | Advertise on TheSamba.com  
TheSamba.com
 
mayday - broke pencil off in cylinder
Page: 1, 2, 3  Next
Forum Index -> Beetle - Late Model/Super - 1968-up Share: Facebook Twitter
This topic is locked: you cannot edit posts or make replies.
Print View
Quick sort: Show newest posts on top | Show oldest posts on top View previous topic :: View next topic  
Author Message
brice
Samba Member


Joined: February 19, 2005
Posts: 211

brice is offline 

PostPosted: Mon May 24, 2010 9:15 pm    Post subject: mayday - broke pencil off in cylinder Reply with quote

This evening I performed my largest mechanical mishaps. Relaxation is a must before blindly rushing through this stuff...

Before adjusting my valves I popped out the #1 cylinder spark plug & placed a pencil in there (eraser end first) a la the John Muir book. This is a tip for finding the "top" of the cylinder to begin adjusting the valves. As I [manually] turned the engine I watched the pencil go down as the piston retreated in the cylinder. I kept turning and it began to come up as the piston began its compression phase... kept turning and "CRACK". I pulled on the pencil and it was stuck. I tried to reverse but couldn't.. and now I am left with 3/4 of the pencil. The other 1/4 is in the cylinder/pushrod/valve somewhere? My guess is the valve swalloed it... but am not sure.

Now... I know these type 1 engines are notorious for running with all kinds of junk rattling around in them... so my question is: do I need to remove the head and pushroods to find the pencil & clean up? Is it possible to just run the engine? If it's in the valve is there any way to get it out. I'm a shade tree house mechanic without any special tools & only an hour or so to work on the beetle (my driver) after work.

Thanks for your help & sympathy with my patheticness Wink !
Back to top
View user's profile Send private message Gallery Classifieds Feedback
RA 70
Samba Member


Joined: May 16, 2009
Posts: 1092
Location: Sacramento
RA 70 is offline 

PostPosted: Mon May 24, 2010 9:20 pm    Post subject: Reply with quote

I wouldnt run it with the pencil in it. Soo be creative on getting the pencil out, or have fun pulling the head.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
doc1369
Samba Member


Joined: March 31, 2010
Posts: 2859
Location: Las Vegas, NV, again
doc1369 is offline 

PostPosted: Mon May 24, 2010 9:21 pm    Post subject: Reply with quote

I use a ziptie because they don't break but still a bad idea. As for the pensil best thing is to pull the head, next best is a ziptie and a gob of grease. Ever play operation, it would help. Very Happy
_________________
Fatchicks: Daily drivers, donor cars, collectibles. What can't they do?
Back to top
View user's profile Send private message Gallery Classifieds Feedback
lupin..the..3rd
Samba Member


Joined: December 28, 2009
Posts: 1800

lupin..the..3rd is offline 

PostPosted: Mon May 24, 2010 9:24 pm    Post subject: Reply with quote

No, you cannot run it with the pencil in there. That will destroy your motor for sure. Time to pull the cylinder head and retrieve the pencil pieces.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
68IHscout
Samba Member


Joined: March 10, 2010
Posts: 3122
Location: santa ana ca
68IHscout is offline 

PostPosted: Mon May 24, 2010 9:47 pm    Post subject: Reply with quote

Ok so u got eraser end first, so doesn't that have a metal piece to keep eraser on the pencil I would try a low magnet and try to get it that way , or a small vacum hooked to a small hose enough to fit in the cilinder
Back to top
View user's profile Send private message Gallery Classifieds Feedback
doc1369
Samba Member


Joined: March 31, 2010
Posts: 2859
Location: Las Vegas, NV, again
doc1369 is offline 

PostPosted: Mon May 24, 2010 9:56 pm    Post subject: Reply with quote

Been there done that. The cyl is iron and catches the magnet way before you grab anything. pain in the butt.
_________________
Fatchicks: Daily drivers, donor cars, collectibles. What can't they do?
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Cusser
Samba Member


Joined: October 02, 2006
Posts: 33056
Location: Hot Arizona
Cusser is offline 

PostPosted: Mon May 24, 2010 9:58 pm    Post subject: Reply with quote

I also like the hose attached to a small vacuum pump to get out the piece.

And if you ever feel the need to stick something down the spark plug hole, use a plastic drinking straw.
_________________
1970 VW (owned since 1972) and 1971 VW Convertible (owned since 1976), second owner of each. The '71 now has the 1835 engine, swapped from the '70. Second owner of each. 1988 Mazda B2200 truck, 1998 Frontier, 2014 Yukon, 2004 Frontier King Cab. All manual transmission except for the Yukon. http://www.thesamba.com/vw/forum/album_page.php?pic_id=335294 http://www.thesamba.com/vw/forum/album_page.php?pic_id=335297
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Habs24x
Samba Member


Joined: June 22, 2009
Posts: 321
Location: Manassas, Va
Habs24x is offline 

PostPosted: Mon May 24, 2010 10:12 pm    Post subject: Re: mayday - broke pencil off in cylinder Reply with quote

brice wrote:
so my question is: do I need to remove the head and pushroods to find the pencil & clean up?


Sure, go ahead and run it what harm could it do?? The PO of one of mine thought it was a good idea Rolling Eyes :2gunfire:
Seriously drop the motor and pull the head. Doesn't take long vs. doing it the PO way.
Image may have been reduced in size. Click image to view fullscreen.

At about 11 o'clock you can see a folded up piece of the aluminum band that holds the eraser stuck in the head. See the little shadow?
Image may have been reduced in size. Click image to view fullscreen.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Garner
Samba Member


Joined: January 19, 2010
Posts: 128
Location: Columbia, MO
Garner is offline 

PostPosted: Mon May 24, 2010 10:19 pm    Post subject: Reply with quote

Not that it will do the work for you, but Snap-On (and I'm sure many others) sells a shielded magnet on a flexible metal rod (not a telescoping deal) for like $8. The little shield helps keep it from sticking on everything else. Has saved my bacon on a couple of things lost in intakes. Also, in a perfect world, you'd have a buddy with a flexible lighted fiber-optic camera to get a more precise bead on its whereabouts.

Short of pulling the head, you could take off the intake and likely retrieve it easier through the large-ish (compared to a spark plug hole) opening. Or, trained termites that also handle graphite. And a little robotic termite that eats the metal eraser band. But you must be able to trust the tiny robotic termite, or he could really wreak havoc on the rest of you Beetle.

Either way, you'll be pulling the intake if the head is coming off. Might get luckier there, save time, mess.
Back to top
View user's profile Send private message Classifieds Feedback
Habs24x
Samba Member


Joined: June 22, 2009
Posts: 321
Location: Manassas, Va
Habs24x is offline 

PostPosted: Mon May 24, 2010 10:35 pm    Post subject: Reply with quote

Garner, wouldn't there be a valve in the way? Wink
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Garner
Samba Member


Joined: January 19, 2010
Posts: 128
Location: Columbia, MO
Garner is offline 

PostPosted: Mon May 24, 2010 10:47 pm    Post subject: Reply with quote

Its getting late here in the Central Time Zone, but I'm guessing the valve and pencil remain strangers. I would guess that the pencil got cocked and was broken by the piston itself. I can't see how the valve would block a rescue attempt, unless (and it seems unlikely to me) that the broken bit is wedged in between a valve and its seat. And, if it was indeed the compression stroke both valves would have been closed at the time of the alleged incident. Regardless, a valve is no impediment to my highly trained robot termite minions.

I'm rethinking this. Perhaps there was a second pencil, or just one "magic pencil?" How else can you explain it?
Back to top
View user's profile Send private message Classifieds Feedback
JonF
Samba Member


Joined: December 16, 2005
Posts: 2030
Location: Oklahoma
JonF is offline 

PostPosted: Mon May 24, 2010 10:57 pm    Post subject: Reply with quote

if it is still in one piece you could bust out those really long hemostats and preform some exploratory surgery before you open her up all of the way.

take all 4 plugs out and see if you can roll the engine backwards.
_________________
68 bug 1600sp 30/31
68 baja 1600sp 010 32ndix
Back to top
View user's profile Send private message Facebook Gallery Classifieds Feedback
spotco2
Samba Member


Joined: May 09, 2006
Posts: 1161
Location: GA
spotco2 is offline 

PostPosted: Mon May 24, 2010 11:48 pm    Post subject: Reply with quote

It's up tp you if you want to pull the engine or not, but here's my thoughts anyways.

First off, a regular magnet wont work and neither will a shielded magnet. Pencils usually have an aluminum band that holds the eraser on. You will need one of those special aluminm magnets.

Second, the pics posted above really aint that bad. Sure there are some nicks in the piston and head, but they are not deep and really shouldn't case any major issues. The only thing I would worry about is the aluminum getting stuck under a valve at some point. The wood and graphite will eventually come apart and either burn out or get blown out of the cylinder.

I'd run it until you have time to tear it down.
_________________
69 Beetle

VW's are not just a car, they're an adventure!
Back to top
View user's profile Send private message Send e-mail Gallery Classifieds Feedback
raddler
Samba Member


Joined: May 19, 2010
Posts: 92

raddler is offline 

PostPosted: Mon May 24, 2010 11:55 pm    Post subject: Reply with quote

Yup I'd try the shop vac. For a plan b how about pouring some gas down the sparg plug hole and try to flood it then take a suction gun and suck the wood parts out,maybe they will float? On a second note buy your self a tdc whistle they are about twenty bucks find out tdc any cylinder buy just screwing it into the spark plug hole. Idea
Back to top
View user's profile Send private message Classifieds Feedback
sharkinfested
Samba Member


Joined: May 05, 2009
Posts: 244
Location: KY
sharkinfested is offline 

PostPosted: Tue May 25, 2010 12:04 am    Post subject: Reply with quote

I've got an idea but DON'T do it until someone else with more experience signs off on it.

Like JonF said, take out the other spark plugs and roll the engine back a bit. Then fill the cylinder with gas and the pencil should float to the top where you can grab it with tweezers and then vacuum out the gas. You might want to do an oil change afterwards in case any gas seeped into your oil.
Back to top
View user's profile Send private message Classifieds Feedback
sharkinfested
Samba Member


Joined: May 05, 2009
Posts: 244
Location: KY
sharkinfested is offline 

PostPosted: Tue May 25, 2010 12:05 am    Post subject: Reply with quote

DANG! I type too slow Smile
Back to top
View user's profile Send private message Classifieds Feedback
JonF
Samba Member


Joined: December 16, 2005
Posts: 2030
Location: Oklahoma
JonF is offline 

PostPosted: Tue May 25, 2010 1:19 am    Post subject: Reply with quote

before you go and flood your cylinder with fuel you might do a lil experiment and see if a pencil will even float in gas.

plus i dont think this will work with the valves open when you turn the engine back
_________________
68 bug 1600sp 30/31
68 baja 1600sp 010 32ndix
Back to top
View user's profile Send private message Facebook Gallery Classifieds Feedback
alexnwolf
Samba Member


Joined: July 31, 2009
Posts: 142
Location: Redondo Beach, CA
alexnwolf is offline 

PostPosted: Tue May 25, 2010 2:38 am    Post subject: Reply with quote

spotco2 wrote:
You will need one of those special aluminm magnets.


How can you pick up a non-magnetic material magnetically? o.O
Back to top
View user's profile Send private message Classifieds Feedback
djkeev
Samba Moderator


Joined: September 30, 2007
Posts: 32987
Location: Reading Pennsylvania
djkeev is offline 

PostPosted: Tue May 25, 2010 4:00 am    Post subject: Reply with quote

Go fishing.

It will take some patience but in the end this should get the bits out.....

Image may have been reduced in size. Click image to view fullscreen.


http://www1.mscdirect.com/CGI/NNSRIT?PMPXNO=1759427&PMT4NO=86292263

You know gravity has pulled the pieces to the bottom so concentrate in that area.

I have one of these hanging on my tool box. Don't use it much but when I need it, there is no substitute.

Dave
_________________
Stop Dead Photo Links how to post photos

Ghia
http://www.thesamba.com/vw/forum/viewtopic.php?t=392473

Vanagon
http://www.thesamba.com/vw/forum/viewtopic.php?p=6315537#6315537

Beetle
https://www.thesamba.com/vw/forum/viewtopic.php?t=482968&highlight=74+super+vert
Back to top
View user's profile Send private message Send e-mail Gallery Classifieds Feedback
jlex
Samba Member


Joined: January 23, 2009
Posts: 2902
Location: NW Pennsylvania
jlex is offline 

PostPosted: Tue May 25, 2010 4:30 am    Post subject: Reply with quote

I've retrieved things & have started screws in tight places using some sticky weather strip material attached to a screwdriver. If you don't have anything like that, go to the store and buy one of those mouse glue traps. They have some super sticky stuff to trap and hold the mouse. This gel-type glue is incredibly strong. Scoop off a chunk and affix it to the end of a thin dowel rod... believe me: as soon as it hits that pencil, it'll stick!
_________________
jlex.
'70 std. "Elsie"
'88 Carrera
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Display posts from previous:   
This topic is locked: you cannot edit posts or make replies.    Forum Index -> Beetle - Late Model/Super - 1968-up All times are Mountain Standard Time/Pacific Daylight Savings Time
Page: 1, 2, 3  Next
Page 1 of 3

 
Jump to:  
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 vote in polls in this forum

About | Help! | Advertise | Donate | Premium Membership | Privacy/Terms of Use | Contact Us | Site Map
Copyright © 1996-2024, Everett Barnes. All Rights Reserved.
Not affiliated with or sponsored by Volkswagen of America | Forum powered by phpBB
Links to eBay or other vendor sites may be affiliate links where the site receives compensation.