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Old 14 January 2013, 07:14   #1
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Glow Plugs

Does anybody know what glow plugs I need to buy for my Mercruiser 1.7 Diesel engine?

Thank you in anticipation
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Old 14 January 2013, 08:56   #2
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vauxhall astra cdti just take an old one to a good auto shop or injection specialist they will match them up
I assume you have them out to test them anyway?
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Old 14 January 2013, 09:01   #3
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Not yet.....haven't located them yet.....and it rubbish weather.
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Old 14 January 2013, 09:12   #4
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you dont need to remove them to test you can disconnect the wire from the top then flash the top of the thread with a wire from the positive on the battery if you get a spark the plugs ok if you get nothing the plugs knackered

theres no inbetweens there either good or knackered
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Old 14 January 2013, 15:21   #5
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Not sure that the Vauxhall ones fit, there are two types fitted on the Mercruiser one is for Sterndrive applications one for inboard versions. Not sure what the difference is. They are not cheap! Retail price is 99.33 plus vat each we have 4 in stock at the min. You get 10% off that price.
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Old 14 January 2013, 16:03   #6
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if you x referance the nos off your old ones they will fit I think they are bosch which are very easy to x referance from a decent outlet

you should get a full set for the price of one oe one & some change

dont be frightened to change just one faulty one there not like spark plugs!

they only work for a few seconds at start up some stay on a few seconds longer to give better idling after start up maybe thats why there is a differance between the inboard & outboard

I rebuilt one of these engines and they are the astra engine with a different pump fitted all gaskets bearings seals etc fit
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Old 14 January 2013, 17:27   #7
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Genuine Bosch or NGK glow plugs cost about 10-15 from my local motor factors.
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Old 15 January 2013, 10:40   #8
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Cheers guys....off to motor factors
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Old 17 January 2013, 05:24   #9
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Still having trouble!!!!!

Can I ask you to look at these pics and point out where the glow plugs are, if indeed, there are any......

Any advice would be grateful
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Old 17 January 2013, 06:09   #10
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Looking at your pictures, I can't see any obvious Glowplugs, unless they are the items you can just see beneath the injectors that appear to be connected by a tube? First glance it looks like a spill rail, but could be a bridging cable connecting glowplugs?. Normally you would have a heavy feed wire providing the current for them, can't see that either. Some diesels have a heater element in the inlet tract, but I can't see that either.
I am not familiar with this engine so am unable to offer any other advice.
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