Arcing coilpack..
07-02-2010, 02:04 AM
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Arcing coilpack.. Hey guys-
I've got an arcing coil pack and I'm wondering what the best way to sort this issue out is..
It doesn't look like it's arcing from the spark plug boot - more like it's arcing directly underneath the coil pack itself..
Anyone have any suggestions?
Thanks
Jeff
I've got an arcing coil pack and I'm wondering what the best way to sort this issue out is..
It doesn't look like it's arcing from the spark plug boot - more like it's arcing directly underneath the coil pack itself..
Anyone have any suggestions?
Thanks
Jeff
07-02-2010, 10:58 AM
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Stock coils.. I don't remember if I ever removed it from the bracket or not.. Pretty sure when I did the swap I left them all attached to the bracket..
07-02-2010, 08:37 PM
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07-03-2010, 06:03 PM
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I dont remember which side is which.. If the drivers side are cylinders 1,3,5,7 and pax side are 2,4,6 and 8, The arc was on cylinder 6.. I checked the plug wires and #2 was loose... Started it up and it runs fine.. Arcing is gone...
07-06-2010, 01:54 PM
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LOL.. no less than the rest of us I guess...
All I know is the car was running rough and I threw a code (don't remember the code off the top of my head) so I went to AutoZone to get the alternator checked.. We noticed the arcing coilpack.. Some suggested checking the wires...
So I checked all the wires- #2 was loose.. Reseated it and the arcing quit..
Pocket is most likely right, in the wire checking I closed a fissure in the bad pack.. So far it's running fine..
When/if it starts running rough again, I'll change out the pack...
All I know is the car was running rough and I threw a code (don't remember the code off the top of my head) so I went to AutoZone to get the alternator checked.. We noticed the arcing coilpack.. Some suggested checking the wires...
So I checked all the wires- #2 was loose.. Reseated it and the arcing quit..
Pocket is most likely right, in the wire checking I closed a fissure in the bad pack.. So far it's running fine..
When/if it starts running rough again, I'll change out the pack...
07-14-2010, 08:53 AM
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Looks like Pocket was right, the pack is arcing again.. I'm going to replace.. My question is - should I seek out another stock pack or can I just upgrade these as they fail?
If I run 7 stock packs and 1 MSD pack, am I asking for issues or is "a pack a pack?"
If I run 7 stock packs and 1 MSD pack, am I asking for issues or is "a pack a pack?"
07-14-2010, 09:38 AM
#17
If going new, do them all
If replacing with the same style, buy a used set of 7-8 and replace as they die
For a mostly stock/mild engine you wont notice any change from mixing/matching coils, but the higher power engines will pick up quite an imbalance from the different in spark quality and dwell. Read over some coil comparison threads. I recall one where a guy picked up 30hp peak from switching his worn out LS1 coils for the external ground truck coils
If replacing with the same style, buy a used set of 7-8 and replace as they die
For a mostly stock/mild engine you wont notice any change from mixing/matching coils, but the higher power engines will pick up quite an imbalance from the different in spark quality and dwell. Read over some coil comparison threads. I recall one where a guy picked up 30hp peak from switching his worn out LS1 coils for the external ground truck coils
07-14-2010, 10:41 AM
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Yeh, I'd like to do them all but don't have the $800 MSD wants for them..
My car is a heads/cam car..
Any idea what the truck coils run and are they a direct bolt on?
My car is a heads/cam car..
Any idea what the truck coils run and are they a direct bolt on?
07-14-2010, 04:05 PM
#19
Truck coils are a nice upgrade if you're running a turbo or supercharger, but fitment requires some tweaking of the fuel rail inlet.
I would just measure resistance of your 7 non-arcing coils and replace any outliers along w/ the bad one. I found 7 of my 8 coils were within ~0.2 Ohms of each other, while one was over 2 Ohms different. It got swapped with a Delco coil and life has been good since then.
Last edited by crainholio; 07-14-2010 at 04:17 PM.
07-14-2010, 06:49 PM
#20
Truck coils mount higher on the valve cover and interfere with the fuel feed line. A slight bend clears them
If you've got billet rails this is a non-issue
99-03 trucks got the good coils. They're easy to spot because there is a heat sink built into the outside of the body. LS2 coils (narrow body) are slightly less powerful, but still a good upgrade to your stockers. Be sure you get the bracket with whatever coils you use
If you've got billet rails this is a non-issue
99-03 trucks got the good coils. They're easy to spot because there is a heat sink built into the outside of the body. LS2 coils (narrow body) are slightly less powerful, but still a good upgrade to your stockers. Be sure you get the bracket with whatever coils you use