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Mike
 Post subject: Damaged plug
PostPosted: Tue Dec 04, 2007 7:06 am 
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Have a look at the plug I pulled out of my #2 cylinder. The plugs are approx 2 years (but only 5000miles) old, the type is NGK BP6ES.
I had a look at them approx 9 months ago (yeah too long I know but the car was running well) and they were fine afaik.

To me this seems like moisture damage causing rust and crumbling ???because of water in the cylinder??? Any other suggestions?

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sgc
 Post subject:
PostPosted: Tue Dec 04, 2007 8:14 am 
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Yoinks! :shock:

Perhaps you have a small head gasket leak.. any other signs? Milk under the oil cap or in the radiator?

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The adventures of an owner builder in the Tallarook Ranges

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Blokeinamoke
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PostPosted: Tue Dec 04, 2007 8:48 am 
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can also be bad fuel and rust can also be galvanic or sacrificial effect caused by breakdown in the insulator - any cracks in insulator?
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Mike
 Post subject:
PostPosted: Tue Dec 04, 2007 9:01 am 
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Blokeinamoke wrote:
can also be bad fuel and rust can also be galvanic or sacrificial effect caused by breakdown in the insulator - any cracks in insulator?


No evidence of damage to the insulator.
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Blokeinamoke
 Post subject:
PostPosted: Tue Dec 04, 2007 9:25 am 
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then I think water would be cause. Are all the plugs like that?
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gibovski
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PostPosted: Tue Dec 04, 2007 9:33 am 
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So if a spark plug with a damaged insulator can result in sacrificial electrolysis perhaps I should mount some broken spark plugs in the front floor pans to save the floor. :lol:
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gibovski
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PostPosted: Tue Dec 04, 2007 9:36 am 
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So if a spark plug with a damaged insulator can result in sacrificial electrolysis perhaps I should mount some broken spark plugs in the front floor pans to save the floor. :lol:
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Blokeinamoke
 Post subject:
PostPosted: Tue Dec 04, 2007 9:38 am 
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gibovski wrote:
So if a spark plug with a damaged insulator can result in sacrificial electrolysis perhaps I should mount some broken spark plugs in the front floor pans to save the floor. :lol:


or make it worse
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Mike
 Post subject:
PostPosted: Tue Dec 04, 2007 9:41 am 
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Blokeinamoke wrote:
then I think water would be cause. Are all the plugs like that?


Nope, just that one. Head off time methinks.
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