Simple spark plug questions?

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Author Message   James (Jimmyg) Senior Member Username: Jimmyg Post Number: 289 Registered: 10-2002 Posted on Saturday, May 31, 2003 - 01:11 am:    On a high milage D1, is it a good or bad idea to run a "hotter" plug? Could a hotter plug lead to overheating? What is the correct gap for the stock plug? thanks   Tom Fioretti (Tom_in_md) Member Username: Tom_in_md Post Number: 51 Registered: 02-2003 Posted on Sunday, June 01, 2003 - 05:27 pm:    You have a 95 3.9 ? Came with Champion RN11YCC. Gap was 0.84 - 0.96mm. Can't comment on what a "hotter" plug would do.   Jeffrey Pinson (Jeffro0502) Member Username: Jeffro0502 Post Number: 49 Registered: 02-2003 Posted on Monday, June 02, 2003 - 08:12 am:    Stick with stock heat range unless you are fouling plugs   Bill Howell (Billh13) Member Username: Billh13 Post Number: 69 Registered: 03-2003 Posted on Tuesday, June 03, 2003 - 07:13 am:    I'm fouling plugs. Replaced spark plugs with RN12YCC. Now disco studders when I first push the gas. The plug's gap is .30, should I open the gap back to factory specs? Has anybody tried this?   Bill Howell (Billh13) Member Username: Billh13 Post Number: 72 Registered: 03-2003 Posted on Tuesday, June 03, 2003 - 08:09 pm:    Just opened the gap to .36in, .9mm, Truck runs great.   June H. Han (Junehhan) New Member Username: Junehhan Post Number: 8 Registered: 04-2003 Posted on Tuesday, June 03, 2003 - 09:55 pm:    Running hotter plugs will run the risk of creating the risk of more engine detonation/pinging, but I can't offer any other advice than this.......   James (Jimmyg) Senior Member Username: Jimmyg Post Number: 294 Registered: 10-2002 Posted on Tuesday, June 03, 2003 - 11:14 pm:    I learned the hard way...DO NOT put in a hotter plug!!! Truck ran like shit and two plugs blew up within 3 days! The good ole stock plugs went in and all is good now.   Michael Noe (Noee) Senior Member Username: Noee Post Number: 660 Registered: 03-2002 Posted on Wednesday, June 04, 2003 - 10:18 am:    So, cracked air intake after the MAF not a problem?   James (Jimmyg) Senior Member Username: Jimmyg Post Number: 295 Registered: 10-2002 Posted on Wednesday, June 04, 2003 - 12:10 pm:    Mike, that's just the next problem. After I replace the hose, I'll see if the MAF needs replacing. Went with the 20lb tank this morning.