Spurlee Posted December 4, 2006 Report Share Posted December 4, 2006 I changed the plugs and wires on my 1996 El Dorado and began to get a Misfire code for Cyl. #1. Here at the forum we talked about carbon tracking and maybe a bad wire, etc. Turns out is was a bad gap setting on the plug - way too small, maybe .020! Used to be, I would gap every plug every time but to be honest, over past couple of years they all seem to be pre-gapped perfectly so I've become lazy. So lazy, apparently, that I never even visually checked the #1 plug and put it in improperly gapped. Needless to say I'll go back to checking every plug every time. Sometimes old-school is smart-school. Scott 1996 El Dorado 2006 STS 2000 Corvette Link to comment Share on other sites More sharing options...
Cadillac Jim Posted December 4, 2006 Report Share Posted December 4, 2006 Sometimes someone drops a spark plug in the box. Gotta gap them. -- Click Here for CaddyInfo page on "How To" Read Your OBD Codes-- Click Here for my personal page to download my OBD code list as an Excel file, plus other Cadillac data -- See my CaddyInfo car blogs: 2011 CTS-V, 1997 ETC Yes, I was Jims_97_ETC before I changed cars. Link to comment Share on other sites More sharing options...
BodybyFisher Posted December 4, 2006 Report Share Posted December 4, 2006 Not only that, but we had a big discussion a while ago about what the proper gap was, some found it to be .050 and some .060. The guru stated that it did not matter. But the question is, how do the plugs come gapped .050 or .060. I check each plug very carefully. If you smoke there is a warning about smoking and touching the plugs, in that you can get flu like symptoms from it, so you smokers out there be careful.. Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
mmarinov Posted December 4, 2006 Report Share Posted December 4, 2006 Not only that, but we had a big discussion a while ago about what the proper gap was, some found it to be .050 and some .060. The guru stated that it did not matter. But the question is, how do the plugs come gapped .050 or .060. I check each plug very carefully. If you smoke there is a warning about smoking and touching the plugs, in that you can get flu like symptoms from it, so you smokers out there be careful.. I found the same information and couldn't decide if it was .050 or .060. I took my plugs out of their boxes and just made sure they were all at least .050 and left them alone. As far as the smoking thing....what?!?! Incidentally, I do smoke and I did it whilst installing the plugs (well, between plugs as I was lying on the engine). I didn't get sick, but does it have to do with the platinum plugs, or just spark plugs in general? Guess I won't be doing that again...<checks for third eye or mysterious appendage growth...> Mark <!--fonto:Arial--><span style="font-family:Arial"><!--/fonto-->2007 DTS Performance - 50K <!--fontc--></span><!--/fontc--> As a matter of fact, I <i>am</i> driving 70 MPH in a phone booth. Link to comment Share on other sites More sharing options...
GreenMachine Posted December 5, 2006 Report Share Posted December 5, 2006 when I purchased my plugs they were gaped from .50 to .70 I can't remember what I ended up gapping too but I think I choose .50 since when they begin to open up they'll be closer to spec than farther. The Green's Machines 1998 Deville - high mileage, keeps on going, custom cat-back exhaust 2003 Seville - stock low mileage goodness! 2004 Grand Prix GTP CompG - Smaller supercharger pulley, Ported Exhaust Manifolds, Dyno tune, etc 1998 Firebird Formula - 408 LQ9 Stroker motor swap and all sorts of go fast stuff Link to comment Share on other sites More sharing options...
BodybyFisher Posted December 5, 2006 Report Share Posted December 5, 2006 Not only that, but we had a big discussion a while ago about what the proper gap was, some found it to be .050 and some .060. The guru stated that it did not matter. But the question is, how do the plugs come gapped .050 or .060. I check each plug very carefully. If you smoke there is a warning about smoking and touching the plugs, in that you can get flu like symptoms from it, so you smokers out there be careful.. I found the same information and couldn't decide if it was .050 or .060. I took my plugs out of their boxes and just made sure they were all at least .050 and left them alone. As far as the smoking thing....what?!?! Incidentally, I do smoke and I did it whilst installing the plugs (well, between plugs as I was lying on the engine). I didn't get sick, but does it have to do with the platinum plugs, or just spark plugs in general? Guess I won't be doing that again...<checks for third eye or mysterious appendage growth...> Mark Sorry this took so long but here is the info on smoking and handling spark plugs: Spark Plug Removal Procedure Notice Twist the spark plug boot one-half turn in order to release the boot. Pull on the spark plug boot only. Do not pull on the spark plug wire or the wire could be damaged. Remove the spark plug wires from the spark plug. Caution Wash your hands after handling coated spark plugs and before smoking. The coating is a non-hazardous material and incidental contact will not cause any adverse effects. However, exposure to polymer vapors - the result of contamination of cigarette products and subsequent burning of the polymer - may result in flu-like symptoms and should be avoided. Important Do not remove spark plugs when the engine is warm. Clean dirt and debris from the spark plug recess area. Remove the spark plug from the cylinder head. Installation Procedure Caution Wash your hands after handling coated spark plugs and before smoking. The coating is a non-hazardous material and incidental contact will not cause any adverse effects. However, exposure to polymer vapors - the result of contamination of cigarette products and subsequent burning of the polymer - may result in flu-like symptoms and should be avoided. Inspect the spark plug to make sure that it is properly gapped. Tighten Tighten the spark plug to 15 N·m (11 lb ft). Connect the spark plug wires at the spark plugs. **************************************************************************** Here are a couple of threads where we beat up the spark plug gap to death http://caddyinfo.ipbhost.com/index.php?sho...=spark+plug+gap http://caddyinfo.ipbhost.com/index.php?sho...=spark+plug+gap Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
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