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Registered
Join Date: Aug 2024
Location: NY
Posts: 92
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Spark escaping somewhere near and around cap/plugs
Hey inmates,
83 SC here and... Apparently I have introduced a new issue for myself after attempting a simple "tune up". I replaced spark plugs with NGK BR9EIX, plug wires (previously Beru shielded wires w/ground) with new Beru Shielded wires, new cap and rotor (both bosch).. She's not running as smoothly as before, something definitely off and it looks/sounds an awful lot like a miss. upon inspection I can definitely hear (and feel) some spark escaping near or around the distributor cap. I've inspected the wires and cant find any defect that would lead to the clicking in the cap area. I get a nice zap when trying to touch the cap while running. I've removed the beru ground straps, cleaned up the mounting points (by the way, do you use the same ground point as the coil for the plugs?).. The cap is mounted correctly in the clips. theres a plate under the ignition rotor. I just dont know. tried running in the dark to see if I can spot where it's escaping but I cant. any thoughts would be greatly appreciated
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1983 911SC - Light Bronze Metallic |
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09-21-2024, 10:14 AM
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Registered
Join Date: Mar 2001
Location: Marysville Wa.
Posts: 22,432
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Siick a screwdriver blade among the wires on the cap. Should be obvious. How is the cap? Sparks at the cap can happen if the wire is open circuit, like off the plug. Path of least resistance.
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https://www.instagram.com/johnwalker8704 8009 103rd pl ne Marysville Wa 98270 206 637 4071 |
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09-21-2024, 12:18 PM
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Registered
Join Date: Aug 2024
Location: NY
Posts: 92
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hey John thanks for the look.. I need to give it another shot with a screwdriver
all 6 wires are definitely secured to each spark plug cap is brand new and intact very odd.
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1983 911SC - Light Bronze Metallic |
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09-21-2024, 12:34 PM
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John W
Join Date: Mar 2009
Location: Albuquerque
Posts: 273
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This has happened to others before. Are the cables in the correct locations on the distributor?
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09-21-2024, 01:38 PM
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Registered
Join Date: Aug 2024
Location: NY
Posts: 92
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unless PO playing a nice trick on me with this sticker, firing order is correct
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1983 911SC - Light Bronze Metallic |
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09-21-2024, 02:14 PM
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Registered
Join Date: Aug 2024
Location: NY
Posts: 92
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Quote:
running nice and smooth now. hopefully anyone else who encounters this in the future finds it helpful
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1983 911SC - Light Bronze Metallic |
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09-22-2024, 08:53 AM
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PCA Member since 1988
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Glad you found it. I was just about to suggest that you make sure the plug caps were all the way onto the plugs. It's easy to think the cap is on the plug when you have to work install them sideways and 4" into the head.
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1973.5 911T with RoW 1980 SC CIS stroked to 3.2, 10:1 Mahle Sport p/c's, TBC exhaust ports, M1 cams, SSI's. RSR bushings & adj spring plates, Koni Sports, 21/26mm T-bars, stock swaybars, 16x7 Fuchs w Michelin Pilot Sport A/S 3+, 205/55-16 at all 4 corners. Cars are for driving. If you want art, get something you can hang on the wall! |
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09-22-2024, 03:43 PM
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Registered
Join Date: Aug 2024
Location: NY
Posts: 92
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thanks Pete. yeah, of all the cars ive had not my favorite to work on plugs and wires on!
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1983 911SC - Light Bronze Metallic |
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09-22-2024, 04:18 PM
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