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Tech Talk Technical Discussion About The Nissan 240SX and Nissan Z Cars


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Old 02-18-2008, 11:53 PM   #1
onesicklambo
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SR20det-Ground strap on back- SPARKING!

So my car wasnt starting for some odd reason... but while looking in the engine bay during cranking I noticed a spark! On the back of the block, on the head theres a factory small braided stainless wire bolted on, and a connector at the other end. Its kinda by where all the coil packs ground. I had my friend hold it to ground while I cranked it...and it burnt him and started smoking. WTF! that much power from a ground/....
So is the head not grounded correctly? If i attach it to ground i am afraid it will start smoking again. My block is gorunded with 4gauge wire from the starter bolt right to frame..with a good ground. Should I reground the head??? anytone had this problem? Do I have a short?
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Old 02-19-2008, 12:00 AM   #2
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LMAO i cant help it but you burnt your buddy hahahahaha lol


ok yes you should ground the head but ground it properly and make if you ground the wiring shave a little paint off where you are grounding it so that its grounded right.

o yea check your grounding to your starter. sometimes its loose cause mine happens to be like that sometimes so i check it often enough. and reground it.
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Old 02-19-2008, 06:33 PM   #3
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add more grounds, and check all the grounds you already have
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Old 02-19-2008, 10:05 PM   #4
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bad connections make sparks, and make heat

fix yo grounds son!

also make sure the plastic alternator grommet isn't cracked/broken. it's the little piece of plastic that separates the charge stud from the alternator housing (which is grounded to your motor by all the bracketry etc.) jiggle your charge wire.

and i concur with add more grounds. from the battery to the chassis and chassis to motor.

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Old 02-20-2008, 12:02 AM   #5
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Yeah foreal.
Check your battery terminals too, and start ohming shit out. Grounds like that don't just spark up for no reason
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Old 02-20-2008, 12:11 AM   #6
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LOL. You burnt your buddy because

1. your other grounds are bad

2. There was prob. just as much current going through the ground as the power wire.
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