Ferrari Mailing List: Re: Very rusted plug connector

[Michael James (cavallino_rapante]

If you're trying Ford parts in your Ferrari as a temporary experiment to determine root-cause analysis, that's great.  However, your car's electrical system was not designed for those extenders/wires.  A specific Ohm-range is required between coil and spark-plug, and the factory wires and plug extenders were designed to meet a certain Ohm-rating, depending on model-year.  There was a cut-off somewhere, as the plug extenders changed (not just in color from black to red).  The cheap, aftermarket plug extenders are known to MELT, resulting in a molten puddle of plastic goo at the bottom of the spark plug well - you do NOT want this! 

 

Yes, water can get-into the spark plug well and corrode the extenders, causing misfire and/or complete failure - even with the caps in-place.  Not exactly a precision fit, then take into consideration thermal expansion of dissimilar materials.

 

M

 

From: Michel Savard <mysavard [at] videotron.ca>
To: Michael <Cavallino_Rapante [at] yahoo.com>
Cc: The FerrariList <ferrari [at] ferrarilist.com>
Sent: Monday, July 9, 2012 4:58 PM
Subject: [Ferrari] Very rusted plug connector

1981 308 GTSi: Remember my totally broken connector (connecting plug wire to plug extension) from yesterday ? Well, I looked at another today, #3 front of engine, the connector was TOTALLY rusted and broken in 2. Anymore rust and it would have been desintegrating by itself.

How can it rust ? It's well hidding, no water can get in there. I don't understand.

I guess electricity wasn't not going through by much.

 

I fixed it by taking the connectors from the a spare set of plug wires from my 2000 Ford Focus and test drove again. Much much better, not perfect. Still a little backfire now and then, but much smaller. I'll check the 4 back connectors tomorrow.

I still have that bling bling sound. Got to go to the muffler shop to have it checked.

 

Michael Savard

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