Glow Plug Life?
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Senior User
Joined: Jul 2006
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From: Wisconsin
Glow Plug Life?
Is there an average life in years or miles that a glow plug lasts? I will be changing injector o-rings and while I'm in there I'm considering changing the glow plugs as preventative maintenance if they're nearing their life span. They've been in there about 4 years. What you all think?
Posting Guru
Joined: Nov 2007
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From: West Texas
My originals were still working fine at 15 years and 300000 miles. I only did them because I had the injectors out too. The wiring harness goes bad more often than the plugs do. I would just test them with a test light while the valve cover is off and only do them is you find bad ones.
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Senior User
Joined: Jul 2006
Posts: 320
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From: Wisconsin
Wow thats a lot of years and a lot of miles. I plan on tearin the engine down in a couple years for a buildup anyways, so at that point I'd surely change them. Just wanna make sure they ain't known to go bad in 5 years under normal circumstances.
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