Go Back  R/C Tech Forums > General Forums > Nitro Off-Road
how to read and know when to change glow plug >

how to read and know when to change glow plug

how to read and know when to change glow plug

Old 11-14-2007, 04:46 PM
  #1  
Tech Master
Thread Starter
iTrader: (17)
 
SteveJa's Avatar
 
Join Date: Aug 2005
Location: Omaha
Posts: 1,100
Trader Rating: 17 (100%+)
Default how to read and know when to change glow plug

there was a post some time back that said how to read a glow plug, and it said how you should change it (cold, medium, hot) with weather changes, cold, hot, humid, not humid.... can someone help me out ??


Thanks
SteveJa is offline  
Old 11-14-2007, 06:39 PM
  #2  
Tech Fanatic
iTrader: (52)
 
Join Date: Apr 2006
Location: socal
Posts: 858
Trader Rating: 52 (98%+)
Default

go check out RB's website

http://www.rbproducts.com/mainEn.php...ght%20glowplug
straightaway is offline  
Old 11-14-2007, 07:17 PM
  #3  
Tech Master
Thread Starter
iTrader: (17)
 
SteveJa's Avatar
 
Join Date: Aug 2005
Location: Omaha
Posts: 1,100
Trader Rating: 17 (100%+)
Default

cool... thanks... that was one of the sites i looked at..... I think there way another one......too... anyone else....
SteveJa is offline  
Old 11-15-2007, 07:44 AM
  #4  
Tech Rookie
 
BlackFlame's Avatar
 
Join Date: Aug 2007
Location: Charlotte, NC
Posts: 10
Default

Honestly, I don't think anyone really knows. For every manufacturer that says "hotter day, colder plug" there is one telling you "don't change your plug based on air temp."

There are just too many varibles that are involved in getting accurate temperature readings from an engine to actually test this.


RC glow plugs

Last edited by BlackFlame; 11-15-2007 at 01:43 PM.
BlackFlame is offline  
Old 11-15-2007, 10:50 AM
  #5  
Tech Master
 
RACING MASON's Avatar
 
Join Date: Aug 2007
Location: Lake Havasu City Az
Posts: 1,395
Default

I have learned when in doubt, change it...........
RACING MASON is offline  
Old 11-15-2007, 10:58 AM
  #6  
Tech Elite
iTrader: (1)
 
joe of loath's Avatar
 
Join Date: Mar 2007
Location: Bristol, England, United Kingdom
Posts: 4,857
Trader Rating: 1 (100%+)
Default

quick question not really warranting its own thread: i THINK the glow plug in my firestorm is duff, as it wasn't starting (one tank through and it worked, stopped, had lunch, another tank in, and it didnt start) so would an OS A3 be a good replacement for the stock HPI R5? or is it too cold/hot?
joe of loath is offline  
Old 11-15-2007, 01:47 PM
  #7  
Tech Rookie
 
BlackFlame's Avatar
 
Join Date: Aug 2007
Location: Charlotte, NC
Posts: 10
Default

Originally Posted by joe of loath
quick question not really warranting its own thread: i THINK the glow plug in my firestorm is duff, as it wasn't starting (one tank through and it worked, stopped, had lunch, another tank in, and it didnt start) so would an OS A3 be a good replacement for the stock HPI R5? or is it too cold/hot?
Just a quick tip......pull the glow plug out and hold it in your ignitor with a pair of pliers. If it glows bright, then it is still good.

Oh yeah, make sure your ignitor isn't dead either.

As far as a replacement for your HPI R5, the equivilent OS plug would be the
R5 (Coldest) or even the A5 (Med Cool). Your HPI R5 was a cold plug and the A3 is a hot plug.


RC glow plugs
BlackFlame is offline  
Old 11-27-2007, 03:30 PM
  #8  
Tech Adept
 
DR ZAIRUS's Avatar
 
Join Date: Oct 2007
Location: Valencia (Spain)
Posts: 201
Default

I've heard something like this:

look at your plug after a run:

-If the coil is blackened and the case is wet, it means your motor setting is too ritch or your plug is too cold.

-If the coil is gray and the case is dry, you are too lean or plug too hot.

-If the coil is sunken or broken, you need more combustion chamber room: add a shim.

-If the coil is silvery and the case is dry or slightly humid, you are running ok.

I'm not 100% sure this is all correct, so tell me what you think...
DR ZAIRUS is offline  
Old 11-27-2007, 04:14 PM
  #9  
Tech Fanatic
 
Join Date: May 2005
Location: Lincoln Park-Chicago
Posts: 881
Default

Originally Posted by BlackFlame
Just a quick tip......pull the glow plug out and hold it in your ignitor with a pair of pliers. If it glows bright, then it is still good.

Oh yeah, make sure your ignitor isn't dead either.

As far as a replacement for your HPI R5, the equivilent OS plug would be the
R5 (Coldest) or even the A5 (Med Cool). Your HPI R5 was a cold plug and the A3 is a hot plug.


RC glow plugs
Why would you need to hold the plug with a pair of pliers? I've been checking plugs for years with out them.
satoch is offline  
Old 12-02-2007, 05:14 AM
  #10  
Tech Elite
iTrader: (45)
 
tkhoo's Avatar
 
Join Date: Jun 2003
Location: Somewhere in Penang Island, Malaysia
Posts: 3,495
Trader Rating: 45 (98%+)
Default

Originally Posted by satoch
Why would you need to hold the plug with a pair of pliers? I've been checking plugs for years with out them.
Just for safety
tkhoo is offline  
Old 12-02-2007, 10:21 AM
  #11  
Tech Elite
iTrader: (2)
 
rltanner's Avatar
 
Join Date: Aug 2007
Location: Lake Havasu City,AZ
Posts: 2,681
Trader Rating: 2 (100%+)
Default

Originally Posted by tkhoo
Just for safety
Safty..........Dumb and dangerous is the way i roll
rltanner is offline  

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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
Trackbacks are On
Pingbacks are On
Refbacks are Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.