Questions and Answers If you have general RC questions or answers discuss it here.

Jammed Carburator

Reply

Old 11-29-2005, 05:01 PM
  #1  
Mchwind Chimes
Senior Member
Thread Starter
My Feedback: (1)
 
Mchwind Chimes's Avatar
 
Join Date: Aug 2005
Location: Hollywood, FL
Posts: 188
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Jammed Carburator

The plane i have was used once, but the guy who had it i guess did nt put flid in the carb before storing it, what should i do to get that loose?
Mchwind Chimes is offline  
Reply With Quote
Old 11-29-2005, 05:39 PM
  #2  
delman
Senior Member
 
Join Date: Apr 2003
Location: Flower Mound, TX
Posts: 643
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Jammed Carburator

You can try heat or soaking it in fuel - should free it up.
delman is offline  
Reply With Quote
Old 11-29-2005, 05:42 PM
  #3  
red head
 
Join Date: Feb 2005
Location: Zephyrhills, FL
Posts: 2,096
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Jammed Carburator

Spray some WD 40 in the carb and let it set overnight, that should do it. ENJOY !!! RED
red head is offline  
Reply With Quote
Old 11-29-2005, 10:11 PM
  #4  
2slow2matter
Senior Member
My Feedback: (1)
 
Join Date: Aug 2004
Location: Springtown, TX
Posts: 2,424
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Jammed Carburator

Make sure you chase the WD 40 out of the engine with lots of after run oil as WD 40 attracts moisture--which will make your bearings rust, and you'll have even more problems..
2slow2matter is offline  
Reply With Quote
Old 11-29-2005, 10:59 PM
  #5  
Broken
Senior Member
 
Broken's Avatar
 
Join Date: Sep 2002
Location: Herriman, UT
Posts: 818
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Jammed Carburator

--WD-- Stands for water displacer. I have trouble understanding how it could attract water???

WD-40 history
http://www.wd40.com/AboutUs/our_history.html
Broken is offline  
Reply With Quote
Old 11-30-2005, 09:59 AM
  #6  
2slow2matter
Senior Member
My Feedback: (1)
 
Join Date: Aug 2004
Location: Springtown, TX
Posts: 2,424
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Jammed Carburator

Spray it on something and leave it outside for a while. You'll see how "WELL" it displaces water. Just going from experience here.
2slow2matter is offline  
Reply With Quote
Old 11-30-2005, 10:22 AM
  #7  
kdheath
Senior Member
 
Join Date: Nov 2002
Location: Rochester, MN
Posts: 1,270
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Jammed Carburator

No, never, ever, ever, leave WD-40 in an engine. The stuff is a disaster. The best oil we've found for engine preservation is air tool oil. It's made to protect pneumatic grinders and such from the moisture in compressed air lines. A many-year supply is about $5, less at Harbor Freight.
kdheath is offline  
Reply With Quote
Old 11-30-2005, 12:51 PM
  #8  
piper_chuck
My Feedback: (12)
 
piper_chuck's Avatar
 
Join Date: Jun 2004
Location: Columbia, SC
Posts: 8,039
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Jammed Carburator

ORIGINAL: 2slow2matter

Spray it on something and leave it outside for a while. You'll see how "WELL" it displaces water. Just going from experience here.
The same will happen with lots of lubricants, but that doesn't mean it attracts water. It's not designed to be a permanent protectant against weather.
piper_chuck is offline  
Reply With Quote
Old 11-30-2005, 12:52 PM
  #9  
piper_chuck
My Feedback: (12)
 
piper_chuck's Avatar
 
Join Date: Jun 2004
Location: Columbia, SC
Posts: 8,039
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Jammed Carburator

ORIGINAL: kdheath

No, never, ever, ever, leave WD-40 in an engine. The stuff is a disaster.
Really? You should tell that to the boat racing people. It's been used to flush engines at the end of the day for years.
piper_chuck is offline  
Reply With Quote
Old 11-30-2005, 12:57 PM
  #10  
piper_chuck
My Feedback: (12)
 
piper_chuck's Avatar
 
Join Date: Jun 2004
Location: Columbia, SC
Posts: 8,039
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Jammed Carburator

Oh, and back to the original question, I've unstuck several old carbs by heating them to about 300 degrees. This softens the gum enough to let the barrel rotate. Once it's moving, even a little, pouring in some alcohol (Isopropyl, denatured, or bacardi 151 ) and keep moving it. The alcohol dissolves the gummed up oil. Note that you also should remove the needle and clean the spray bar. I've tried WD-40, but have found that it doesn't remove the gum and the carb ends up sticking again.
piper_chuck is offline  
Reply With Quote
Old 11-30-2005, 12:59 PM
  #11  
Rodney
Senior Member
 
Join Date: Dec 2001
Location: FL
Posts: 7,769
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Jammed Carburator

WD 40 is probably one of the worst things you can leave in your engine. Usually heat will free the carb up, just direct your heat gun on it for a bit and then GENTLY try to work it back and fourth. It will usually free up, if not soak it overnight in some fresh fuel or kerosene and try again. Once free, use any good air tool oil, ATF, Rislone or any after run oil (usually overpriced in my estimation) to keep it free. Again, don't leave WD40 in the engine, it's okay to use it but immediately displace it with one of the suggested oils.
Rodney is offline  
Reply With Quote
Old 11-30-2005, 02:02 PM
  #12  
britbrat
Senior Member
 
Join Date: Jun 2004
Location: Deep River, ON, CANADA
Posts: 3,299
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Jammed Carburator


ORIGINAL: piper_chuck

ORIGINAL: kdheath

No, never, ever, ever, leave WD-40 in an engine. The stuff is a disaster.
Really? You should tell that to the boat racing people. It's been used to flush engines at the end of the day for years.
It may be used to flush water out of the engines, but it is a really lousy lubricant. It is almost entirely a high vapour pressure solvent with a very light lube. It has near zero film strength.

However, in the case of stuck components, the solvent carrier will help get the lube into tight places & free things up. Once free, a normal lube should be applied.
britbrat is offline  
Reply With Quote
Old 12-01-2005, 06:21 PM
  #13  
Mchwind Chimes
Senior Member
Thread Starter
My Feedback: (1)
 
Mchwind Chimes's Avatar
 
Join Date: Aug 2005
Location: Hollywood, FL
Posts: 188
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Jammed Carburator

i think heat is the way to go right? how should i head it other then heat gun?
Mchwind Chimes is offline  
Reply With Quote
Old 12-01-2005, 06:32 PM
  #14  
britbrat
Senior Member
 
Join Date: Jun 2004
Location: Deep River, ON, CANADA
Posts: 3,299
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Jammed Carburator

Before you get carried away with the heat gun, is it a twin-needle carb, or an air bleed type? The reason for asking is that twin needle carbs will have an elastomer O-ring on the low-speed needle, as well as one on the high-speed needle. Somehow you will have to remove the needles to prevent destruction of the O-rings.

Hmmm ---- but then of course, you can't get it appart. []

Stick the sucker in the oven & bake it @350 for 10 or 15 min. [&:]
britbrat is offline  
Reply With Quote
Old 12-02-2005, 06:43 AM
  #15  
Mchwind Chimes
Senior Member
Thread Starter
My Feedback: (1)
 
Mchwind Chimes's Avatar
 
Join Date: Aug 2005
Location: Hollywood, FL
Posts: 188
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Jammed Carburator

ok cool that sounds fine.
Mchwind Chimes is offline  
Reply With Quote
Old 12-02-2005, 06:45 AM
  #16  
Mchwind Chimes
Senior Member
Thread Starter
My Feedback: (1)
 
Mchwind Chimes's Avatar
 
Join Date: Aug 2005
Location: Hollywood, FL
Posts: 188
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Jammed Carburator

how easy is it to get the carb out? (2screws?)
Mchwind Chimes is offline  
Reply With Quote
Old 12-02-2005, 07:43 AM
  #17  
britbrat
Senior Member
 
Join Date: Jun 2004
Location: Deep River, ON, CANADA
Posts: 3,299
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Jammed Carburator

2 screws suggests an air-bleed carb & possibly made by OS or Thunder Tiger. However, to give you the help that you really need, we have to know what kind of engine it is. Somewhere on the casting will be that information, or at least some of the information. Look for something that tells you the name of the manufacturer (OS, or OS Max, for example) & also the engine type, or displacement (46 LA, for example). A pic would really help.
britbrat is offline  
Reply With Quote
Old 12-02-2005, 02:19 PM
  #18  
Mchwind Chimes
Senior Member
Thread Starter
My Feedback: (1)
 
Mchwind Chimes's Avatar
 
Join Date: Aug 2005
Location: Hollywood, FL
Posts: 188
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Jammed Carburator

it is an mds .40
Mchwind Chimes is offline  
Reply With Quote
Old 12-02-2005, 05:26 PM
  #19  
britbrat
Senior Member
 
Join Date: Jun 2004
Location: Deep River, ON, CANADA
Posts: 3,299
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Jammed Carburator

Gawd help ya son.
britbrat is offline  
Reply With Quote
Old 12-02-2005, 11:34 PM
  #20  
Mchwind Chimes
Senior Member
Thread Starter
My Feedback: (1)
 
Mchwind Chimes's Avatar
 
Join Date: Aug 2005
Location: Hollywood, FL
Posts: 188
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Jammed Carburator

why you say that man.lol
Mchwind Chimes is offline  
Reply With Quote
Old 12-05-2005, 06:41 PM
  #21  
JollyPopper
My Feedback: (6)
 
JollyPopper's Avatar
 
Join Date: Oct 2002
Location: Mountain Home, AR
Posts: 2,682
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Jammed Carburator

I was not aware that the WD in WD40 stood for water displacement, but I am here to swear that near the end of my working life, I became associated with an automobile detail shop. By that time, most engines had lost distributors, but of the few that came into the detail shop, about 99% of them would not start after being sprayed with a high pressure washer. The guys would pop the cap off, spray a couple blasts of WD40 inside it, pop it back on, and the car would start---EVERY time. Never failed. I still don't believe it. This was in a dealership, so we don't know what happened to the cars in the long term, but it got cars started that had flooded caps. I swear. Don't bad mouth me 'til you try it. It works............
JollyPopper is offline  
Reply With Quote
Old 12-07-2005, 02:44 AM
  #22  
BigWes
Member
 
BigWes's Avatar
 
Join Date: Nov 2005
Location: Opp, AL
Posts: 65
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Jammed Carburator

Wow! I can actually help here a little maybe. WD 40 is a no-no in my opinion. It is a good penetrant for the most part but it is NOT a good lube. WD-40 has a light-weight acidic compound which allows it to break down light corrosion. Imagine if you will putting acid on rust. It will dissolve the rust first thereby breaking it free. Many penetrants work by using acidic or base compounds. And they work good for what they do. BUT, acidic compounds strip the metal surfaces of lubricants-protectants and leave them vulnerable to moisture evasion which inturn allows corrosion--or rust to come back. So, I would say use break free or WD-40(if you must) on the carb and as soon as you get it free then lube it with a light weight oil. I really like break-free, 3-in-1 oil, any mil-spec CLP, and my favorite is a product called corrosionX which does have a base component which will nuetrelize any acidic reactions. Look, if you were to use WD-40 on a real aircraft the first indications would be it worked great. Let it set for a while and the stuff will gum-up. That is a fact. As far as using it on a distributor of an automobile anyone who knows anything will tell you that petroluem base products do NOT conduct electricity. So if you were to take 10W-30W motor oil under pressure and spray it into that distributer cap it would have the same effect as the WD-40. Just much more messy. Don't get me wrong, WD-40 is good for squeeky hinges and bicycle chains, not model planes Or real planes for that matter. I had the almost the same thing happen with me and a model engine. I had my OS 40 LA in storage and the carb barrel was stuck when I finally pulled the plane down a year and a half later. I was ill about it but really it was my own fault. I just put a few drops of fuel on top of the barrel and let it sit. As it would dry out I would put more fuel on it. I worked it loose over a period of time with no harm done. I did spray some corrosionX on it though as I new it would penetrate far deeper than fuel would. After I got the barrel mobil I took the carb apart and cleaned the barrel with green scotchbrite taking care not to be too rough with it. Anyway, now the carb works great. The OS 40 LA is still a gutless piece of crap but the carb works great though

But I agree with everyone else here about the WD-40. It is a good product you can get at any grocery store at 1 AM but the need you are addressing is a little out of its capabilities unless you want to do serious follow-ups with other products. Don't rely on it for glow engine work.

Wes
BigWes is offline  
Reply With Quote
Old 12-07-2005, 06:47 AM
  #23  
Mchwind Chimes
Senior Member
Thread Starter
My Feedback: (1)
 
Mchwind Chimes's Avatar
 
Join Date: Aug 2005
Location: Hollywood, FL
Posts: 188
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Jammed Carburator

Thanks a lot you guys, you have been good help.
Mchwind Chimes is offline  
Reply With Quote
Old 12-07-2005, 10:49 AM
  #24  
jessiej
Senior Member
 
Join Date: Jul 2003
Location: no city, AL
Posts: 2,613
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Jammed Carburator

I have used WD-40 for a variety of ourpodes for many years. Good at "water displacement, pretty good solvent and penetrant. Terrible preservative, and short lived as a lubricant. I have a rather expensive reloading press that had been stored after being liberaly sprayed with WD-40. Never again.

A number of excellent after run oils have been mentioned in this thread.

Sometimes mentioned is the venerable household oil Three -In- One. Perhaps the formulation has changed from time to time, but I recently disassembled a few fishing reels which had been oiled with that product several years ago. The oil had congealed into a gummy substance.

jess
jessiej is offline  
Reply With Quote
Old 12-07-2005, 03:29 PM
  #25  
mscic-RCU
Senior Member
My Feedback: (6)
 
mscic-RCU's Avatar
 
Join Date: Mar 2002
Location: New London, OH
Posts: 1,237
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Jammed Carburator

Take carb off of engine, soak in fuel. Problem solved.
mscic-RCU is offline  
Reply With Quote

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service