Oil on spark plug threads??? - Team Camaro Tech
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post #1 of 5 (permalink) Old May 24th, 02, 02:51 AM Thread Starter
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Fairly new 350, less than 500 miles on it I suppose. I seem to have a small amount of oil on my spark plug threads. The heads are brand new sportman II's ported. The plugs themselves look great in color. And the car runs awesome. I was curious about the light oil on the threads. Could the rings not be sealed up yet? Also my timing bounces between 13 and 16 at idle with the distributor loose while I'm trying to set the timing. Then when I tighten the distributor it stays steady, is this normal. Thanks, Erik

68 Camaro RS, Built 355, 274 Comp Cam, Sportsman II Heads 200 c.c. 2.02. Ported to Performer RPM Manifold and 1.75" Headers, 1.5 Roller Rockers, 650 Holley, Steel Crank, 12 Bolt posi with 4.11 Gears, TH350 tranny w/ shift kit.
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post #2 of 5 (permalink) Old May 24th, 02, 03:47 AM
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Is it oil or fuel? What can happen sometimes is a motor will burn a little rich and if you have a CD type of ignition the electrode and ceramic will look great but there will be a bit of residue on the threads. Particularly if you have inadvertantly flooded the thing once or twice. Just a thought.

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post #3 of 5 (permalink) Old May 24th, 02, 05:20 AM
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More to check for is a leak from a valve cover. The plugs seem to make a good collection point and most leaks don't show up where they actually start.

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post #4 of 5 (permalink) Old May 24th, 02, 06:12 AM
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Keep in mind, whenever there are 2 dissimilar metals(alum and steel) joined you should use a lube to reduce galvanic corrosion.

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post #5 of 5 (permalink) Old May 25th, 02, 01:43 AM
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Don't worry about it. It's good practice to put a drop or two of oil on the plug threads before installing...makes removal less dramatic. I'd guess that whomever put them in did just that.

Good idea for wheel studs too.

[This message has been edited by Glenn1018 (edited 05-25-2002).]
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