glow plugs??? - SailNet Community
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post #1 of 5 Old 12-29-2012 Thread Starter
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glow plugs???

Can you check glow plugs,,, Pull them and put power to them???

westerbeke w 21 has 3, do you replace just the ones that are bad, or for 40 bucks each just bite the bullet and change them all,,,, thanks,,, Kevin
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post #2 of 5 Old 12-29-2012
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Re: glow plugs???

An ohm meter should show if they are open. However, they may not be operating at their peak and for $40 each you are doing about the best you can. Compared with the overall cost of running a boat it doesn't sound too bad.

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post #3 of 5 Old 12-29-2012 Thread Starter
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Re: glow plugs???

thats the same thing i was thinking,,, but just checking options....
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post #4 of 5 Old 12-30-2012
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Re: glow plugs???

If one or more of your glow plugs has failed by now it is probably well worth replacing them all if you want your engine to be able start reliably. The other older plugs will likely fail soon anyway so why not replace them all?

The Westerbeke price of $45 per plug does not sound that bad, although still quite inflated.
A little story.
I helped a friend with a Universal engine research the cost of new glow plugs for their 3 cylinder engine. All the marine diesel places (Torreson specifically) wanted > $80 per plug which seemed ridiculously high priced. I was able to cross reference the Universal engine he had to the Kubota engine block that was used and found the same glow plugs available on a tractor/farm equipment website for < $9 per plug.

I believe that Westerbeke engines are based on a Mitsubishi engine block if you care to try to find a better price then $45 per plug.

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post #5 of 5 Old 12-30-2012
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Re: glow plugs???

Hey,

Glow plugs are very simple and usually last a long time. If the plugs pass the resistance check, but are not operating, the problem is usually electrical. As a real quick check, run 12V directly from the battery to the glow plug. Be sure to use a thick wire, like 4 gauge or so. You can use an alligator clip on the battery and the glow plug tip. Be careful because the wire can get HOT. If the glow plug works when connected directly to the battery the problem is the connection.

Barry
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Barry Lenoble
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Mt. Sinai, NY

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