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Old 11-14-2007, 04:46 PM   #1
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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
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Old 11-14-2007, 06:39 PM   #2
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go check out RB's website

http://www.rbproducts.com/mainEn.php...ght%20glowplug
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Old 11-14-2007, 07:17 PM   #3
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cool... thanks... that was one of the sites i looked at..... I think there way another one......too... anyone else....
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Old 11-15-2007, 07:44 AM   #4
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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.


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Last edited by BlackFlame; 11-15-2007 at 01:43 PM.
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Old 11-15-2007, 10:50 AM   #5
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I have learned when in doubt, change it...........
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Old 11-15-2007, 10:58 AM   #6
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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?
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Old 11-15-2007, 01:47 PM   #7
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Quote:
Originally Posted by joe of loath View Post
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.


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Old 11-27-2007, 03:30 PM   #8
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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...
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Old 11-27-2007, 04:14 PM   #9
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Quote:
Originally Posted by BlackFlame View Post
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.


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Why would you need to hold the plug with a pair of pliers? I've been checking plugs for years with out them.
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Old 12-02-2007, 05:14 AM   #10
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Quote:
Originally Posted by satoch View Post
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
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Old 12-02-2007, 10:21 AM   #11
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Quote:
Originally Posted by tkhoo View Post
Just for safety
Safty..........Dumb and dangerous is the way i roll
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