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Engine Misses

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BishiBrown View Member Profile	Oct 16 2009, 11:08 AM Post #1
Full Member Group: Members Posts: 80 Joined: 13-October 07 Member No.: 46,445 Status: Location: Juneau,AK Drives: 1997 Eclipse GSX	Hello! I have a 97 GSX which misses under heavy acceleration not heavy missing, but noticeable "lerching" when getting on it. It's done this in the past and I had to reduce the gap from my spark plugs and it was fine after that. The compression was fine with a difference of 4psi on cyl. #1 but that's about it. Also, I had to remove some of my FMIC piping to change my starter and I'll have to check for small leaks in a bit. SO i've covered: Compression-within tolerable limits spark-will re-adjust air-need to check for boost leaks I'm just trying to brainstorm. Anyone have any-other "possible spots" to include?

junior805 View Member Profile	Oct 16 2009, 09:16 PM Post #2
Member Group: Members Posts: 34 Joined: 25-September 09 Member No.: 78,556 Status: Location: usa Drives: 1997 mitsubishi eclipse	more clear like wats going on ?

4G63Attack View Member Profile	Oct 16 2009, 09:48 PM Post #3
The stig Group: Moderator Posts: 4,523 Joined: 12-March 05 Member No.: 7,500 Status: Location: SoCal Drives: 1G GSX	QUOTE (junior805 @ Oct 16 2009, 07:16 PM) more clear like wats going on ? did you check your coil pack ?

onesickgst32 View Member Profile	Oct 17 2009, 11:46 AM Post #4
Full Member Group: Members Posts: 93 Joined: 12-June 08 Member No.: 59,369 Status: Location: Chattanooga, TN Drives: 1999 Eclipse GS-T, 1992 Dodge Stealth ES, 1972 Honda CB450 cafe racer, 1984 Nissan Hardbody, 1988 Kawasaki Vulcan 750	QUOTE (4G63Attack @ Oct 16 2009, 10:48 PM) did you check your coil pack ? i had some real bad missing on cylinder one b/c the coil pack had busted where the wire enters it and it actually melted the wire in half. so id inspect the coil pack in case you have not already, b/c i actually over looked that at first and replaced the plugs, then the wires, and that's when i noticed the problem lol

BishiBrown View Member Profile	Oct 19 2009, 11:15 AM Post #5
Full Member Group: Members Posts: 80 Joined: 13-October 07 Member No.: 46,445 Status: Location: Juneau,AK Drives: 1997 Eclipse GSX	It was the spark plugs!! They wondered a little wide over time ( I gapped them at .28 or so and they were larger than .30 when I checked this weekend!!) So I gapped them down to .26-.27 or so and BOOM! Problem fixed~! Glad it wasn't a larger issue! Now there's smooth acceleration all the way up to redline!! (IMG:style_emoticons/default/smile.gif) Kudos on the input guys!! Thank you.

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