Today's Message Index:
----------------------
1. 11:17 AM - Stuck Spark Plug (Alexander, Don)
2. 12:32 PM - Re: Stuck Spark Plug (BPA)
3. 12:33 PM - Re: Stuck Spark Plug (scott bilinski)
4. 12:57 PM - Re: Stuck Spark Plug (Ed Chmielewski)
5. 01:02 PM - Re: Stuck Spark Plug (longg@pjm.com)
6. 06:11 PM - Re: Stuck Spark Plug (Daniel Tappan)
7. 06:43 PM - Re: Stuck Spark Plug (Archie)
8. 10:16 PM - Re: Stuck Spark Plug (Tedd McHenry)
Message 1
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| Subject: | Stuck Spark Plug |
--> Engines-List message posted by: "Alexander, Don" <Don.Alexander@astenjohnson.com>
Listers,
I had to take a break from my airplane project recently in order to sell
my now-deceased step father's truck. (93 Toyota 4 cyl. 133k miles) It
hasn't had much done to it in the way of p.m. other than oil changes
along the way. It had a stutter which I traced to a bad ignition wire
which was fixed with a new set of plug wires. I figured that as long as
I was taking the time to change the wires, I might as well change the
plugs. Three of the four came out with no problem. The fourth backed
out about a quarter of a turn and wouldn't move any further. I am using
a 8" ratchet handle and am putting quite a bit of force on it. I have
heard that with too much force, you can shear off a plug...that would
not be good. I have applied some penetrating oil, but so far, no luck.
Would an impact wrench be a bad solution?
PS- The plugs that I am putting back in are getting thread lube on them
:-)
Thanks
Do not archive
Tinman
RV-8 Finishing Kit
Message 2
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| Subject: | Stuck Spark Plug |
--> Engines-List message posted by: "BPA" <BPA@BPAENGINES.COM>
And that's the problem with spark plug #4. More than likely it has
galled the threads. I see a Heli-Coil repair coming! :(
Allen Barrett
-----Original Message-----
From: owner-engines-list-server@matronics.com
[mailto:owner-engines-list-server@matronics.com] On Behalf Of Alexander,
Don
Sent: Monday, January 16, 2006 1:16 PM
Subject: Engines-List: Stuck Spark Plug
--> Engines-List message posted by: "Alexander, Don"
<Don.Alexander@astenjohnson.com>
Listers,
I had to take a break from my airplane project recently in order to sell
my now-deceased step father's truck. (93 Toyota 4 cyl. 133k miles) It
hasn't had much done to it in the way of p.m. other than oil changes
along the way. It had a stutter which I traced to a bad ignition wire
which was fixed with a new set of plug wires. I figured that as long as
I was taking the time to change the wires, I might as well change the
plugs. Three of the four came out with no problem. The fourth backed
out about a quarter of a turn and wouldn't move any further. I am using
a 8" ratchet handle and am putting quite a bit of force on it. I have
heard that with too much force, you can shear off a plug...that would
not be good. I have applied some penetrating oil, but so far, no luck.
Would an impact wrench be a bad solution?
PS- The plugs that I am putting back in are getting thread lube on them
:-)
Thanks
Do not archive
Tinman
RV-8 Finishing Kit
Message 3
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| Subject: | Re: Stuck Spark Plug |
--> Engines-List message posted by: scott bilinski <rv8a2001@yahoo.com>
I had this happen once. If what happened to me is happening to you, its too late,
the threads are already galled and the more the spark plug is removed the more
the threads are taken with it.
"Alexander, Don" <Don.Alexander@astenjohnson.com> wrote: --> Engines-List message
posted by: "Alexander, Don"
Listers,
I had to take a break from my airplane project recently in order to sell
my now-deceased step father's truck. (93 Toyota 4 cyl. 133k miles) It
hasn't had much done to it in the way of p.m. other than oil changes
along the way. It had a stutter which I traced to a bad ignition wire
which was fixed with a new set of plug wires. I figured that as long as
I was taking the time to change the wires, I might as well change the
plugs. Three of the four came out with no problem. The fourth backed
out about a quarter of a turn and wouldn't move any further. I am using
a 8" ratchet handle and am putting quite a bit of force on it. I have
heard that with too much force, you can shear off a plug...that would
not be good. I have applied some penetrating oil, but so far, no luck.
Would an impact wrench be a bad solution?
PS- The plugs that I am putting back in are getting thread lube on them
:-)
Thanks
Do not archive
Tinman
RV-8 Finishing Kit
Scott Bilinski
RV-8a
cell 858-395-5094
---------------------------------
Photo Books. You design it and well bind it!
Message 4
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| Subject: | Re: Stuck Spark Plug |
--> Engines-List message posted by: "Ed Chmielewski" <edchmiel@mindspring.com>
Hi Don,
Sounds like it may be binding due to corrosion. Try som 'PB
Blaster' or other penetrant, work the plug back inward then ease it out.
The threads in the head may be deteriorating, and you may be able to salvage
the head with a Helicoil kit. Good luck!
Ed in JXN
----- Original Message -----
From: "Alexander, Don" <Don.Alexander@astenjohnson.com>
Sent: Monday, January 16, 2006 2:15 PM
Subject: Engines-List: Stuck Spark Plug
> --> Engines-List message posted by: "Alexander, Don"
> <Don.Alexander@astenjohnson.com>
>
> Listers,
> I had to take a break from my airplane project recently in order to sell
> my now-deceased step father's truck. (93 Toyota 4 cyl. 133k miles) It
> hasn't had much done to it in the way of p.m. other than oil changes
> along the way. It had a stutter which I traced to a bad ignition wire
> which was fixed with a new set of plug wires. I figured that as long as
> I was taking the time to change the wires, I might as well change the
> plugs. Three of the four came out with no problem. The fourth backed
> out about a quarter of a turn and wouldn't move any further. I am using
> a 8" ratchet handle and am putting quite a bit of force on it. I have
> heard that with too much force, you can shear off a plug...that would
> not be good. I have applied some penetrating oil, but so far, no luck.
> Would an impact wrench be a bad solution?
> PS- The plugs that I am putting back in are getting thread lube on them
> :-)
> Thanks
> Do not archive
> Tinman
> RV-8 Finishing Kit
Message 5
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| Subject: | Stuck Spark Plug |
--> Engines-List message posted by: longg@pjm.com
Get heat on that plug, lots of heat. Don't melt it, but with enough heat it will
come out. The plug is softer than the block and will heat up quickly. You are
correct, you do not want to break it off (although you will probably just break
the tip).
-----Original Message-----
From: owner-engines-list-server@matronics.com
[mailto:owner-engines-list-server@matronics.com] On Behalf Of Alexander, Don
Sent: Monday, January 16, 2006 2:16 PM
Subject: Engines-List: Stuck Spark Plug
--> Engines-List message posted by: "Alexander, Don"
--> <Don.Alexander@astenjohnson.com>
Listers,
I had to take a break from my airplane project recently in order to sell my
now-deceased step father's truck. (93 Toyota 4 cyl. 133k miles) It hasn't had
much done to it in the way of p.m. other than oil changes along the way. It had
a stutter which I traced to a bad ignition wire which was fixed with a new set
of plug wires. I figured that as long as I was taking the time to change the
wires, I might as well change the plugs. Three of the four came out with no
problem. The fourth backed out about a quarter of a turn and wouldn't move any
further. I am using a 8" ratchet handle and am putting quite a bit of force on
it. I have heard that with too much force, you can shear off a plug...that
would not be good. I have applied some penetrating oil, but so far, no luck.
Would an impact wrench be a bad solution?
PS- The plugs that I am putting back in are getting thread lube on them
:-)
Thanks
Do not archive
Tinman
RV-8 Finishing Kit
Message 6
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| Subject: | Re: Stuck Spark Plug |
--> Engines-List message posted by: Daniel Tappan <dancfi@yahoo.com>
"Hi Don
Same thing happened to me on an old Mitsubishi pick up I bought. As one of the
other posts said I used PB blaster very day for a week after driving it.I then
worked the plug in and out a little more each day. After five days I shot
it one last time and grunted with a braker bar. It came out. So did a few threads
but not enough to hurt anything. New plug went rite in.
The old Piper service manuals suggested running the engine until hot and making
a paper cone / funnel . After fitting the small end over the plug you give
it a shot of CO2 (the cold stuff in fire extingwisher) The extreme cold is supposed
to shrink the plug enough to free it up. Sounds good in theory never saw
it done thou. Good luck!
Dan
---------------------------------
Ring in the New Year with Photo Calendars. Add photos, events, holidays, whatever.
Message 7
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| Subject: | Re: Stuck Spark Plug |
--> Engines-List message posted by: "Archie" <archie97@earthlink.net>
Have used that method several times.
And yes, it does work.
If the plug rotates a bit, you can also heat the area up,
and place some wax around the threads, (keeping the plug
in the center of the free area.).
It will melt into crevices, and not evaporate.
Amazing how well this frequently works.
Archie
----- Original Message -----
From: "Daniel Tappan" <dancfi@yahoo.com>
Sent: Monday, January 16, 2006 9:10 PM
Subject: Re: Engines-List: Stuck Spark Plug
> --> Engines-List message posted by: Daniel Tappan <dancfi@yahoo.com>
>
>
> "Hi Don
> Same thing happened to me on an old Mitsubishi pick up I bought. As one
> of the other posts said I used PB blaster very day for a week after
> driving it.I then worked the plug in and out a little more each day. After
> five days I shot it one last time and grunted with a braker bar. It came
> out. So did a few threads but not enough to hurt anything. New plug went
> rite in.
> The old Piper service manuals suggested running the engine until hot and
> making a paper cone / funnel . After fitting the small end over the plug
> you give it a shot of CO2 (the cold stuff in fire extingwisher) The
> extreme cold is supposed to shrink the plug enough to free it up. Sounds
> good in theory never saw it done thou. Good luck!
>
> Dan
>
>
> ---------------------------------
> Ring in the New Year with Photo Calendars. Add photos, events, holidays,
> whatever.
>
>
>
Message 8
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| Subject: | Re: Stuck Spark Plug |
--> Engines-List message posted by: Tedd McHenry <tedd@vansairforce.org>
On automotive engines I have always used Copaslip or a similar,
high-temperature anti-sieze compound on the spark plug threads. But many years
ago someone told that that this is a bad idea on engines with air cooled
cylinder heads, due to lowering the heat transfer between the plug and the
head. I've always thought this advice had "old wives tale" written all over
it, but it has nevertheless prevented me from using anti-sieze compound on
aircraft engines. Am I worried about nothing?
---
Tedd McHenry
Surrey, BC, Canada
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