# Serious mechanical question about lost power... **URL:** \ **Category:** PittSpeed Automotive\ **Created:** [March 27, 2006, 12:44pm UTC](https://forums.speedlife.net/t/serious-mechanical-question-about-lost-power/181281 "2006-03-27T12:44:18Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![F-B-A](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/f-b-a/32/6022_2.png) [@F-B-A](https://forums.speedlife.net/u/F-B-A)\ **Post date:** [March 27, 2006, 12:44pm UTC](https://forums.speedlife.net/t/serious-mechanical-question-about-lost-power/181281/1 "2006-03-27T12:44:18Z")
(Please feel free to move this thread if need be) Okay, Im experiancing a loss of power just after each shift, the only way the keep it from loosing power is to keep the rpm’s up above 3 g’s meaning i have to tacked out before shifting. Also so when i press the clutch in she drops down to almost 4-500rpm? Im running new NGK plugs already Replaced the distributor cap and rotor replaced plug wires running a short ram intake Any suggestions?? Thanks EDIT: 1993 Nissan 1600NX GA16DE ---
**Author:** ![peterock17](https://avatars.discourse-cdn.com/v4/letter/p/bcef8e/32.png) [@peterock17](https://forums.speedlife.net/u/peterock17)\ **Post date:** [March 27, 2006, 12:52pm UTC](https://forums.speedlife.net/t/serious-mechanical-question-about-lost-power/181281/2 "2006-03-27T12:52:22Z")
you might have a bad O2 sensor. I dont know what kind of car you have but I had the same simptoms with a 8v vw. ---
**Author:** ![BlkP42E](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/blkp42e/32/5938_2.png) [@BlkP42E](https://forums.speedlife.net/u/BlkP42E)\ **Post date:** [March 27, 2006, 1:23pm UTC](https://forums.speedlife.net/t/serious-mechanical-question-about-lost-power/181281/3 "2006-03-27T13:23:06Z")
low on vtec fluid? ---
**Author:** ![oneslowbowtie](https://avatars.discourse-cdn.com/v4/letter/o/d78d45/32.png) [@oneslowbowtie](https://forums.speedlife.net/u/oneslowbowtie)\ **Post date:** [March 27, 2006, 1:24pm UTC](https://forums.speedlife.net/t/serious-mechanical-question-about-lost-power/181281/4 "2006-03-27T13:24:14Z")
put some crack in the gas tank ---
**Author:** ![F-B-A](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/f-b-a/32/6022_2.png) [@F-B-A](https://forums.speedlife.net/u/F-B-A)\ **Post date:** [March 27, 2006, 2:43pm UTC](https://forums.speedlife.net/t/serious-mechanical-question-about-lost-power/181281/5 "2006-03-27T14:43:24Z")
Thanks for the suggestions guys, I just knew when I titled it “serious” that ya’ll would come and help. Im going to get some more “vtec” fluid right now, I origanally thought it was only for Hondas, but I can try it they said, and the crack juioce??? I guess you mean Lucas, so im going to add some more now… :kekegay: ---
**Author:** ![imported\_jim](https://avatars.discourse-cdn.com/v4/letter/i/53a042/32.png) [@imported\_jim](https://forums.speedlife.net/u/imported_jim)\ **Post date:** [March 27, 2006, 4:31pm UTC](https://forums.speedlife.net/t/serious-mechanical-question-about-lost-power/181281/6 "2006-03-27T16:31:58Z")
Did you look for vacuum leaks? ---
**Author:** ![F-B-A](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/f-b-a/32/6022_2.png) [@F-B-A](https://forums.speedlife.net/u/F-B-A)\ **Post date:** [March 27, 2006, 4:41pm UTC](https://forums.speedlife.net/t/serious-mechanical-question-about-lost-power/181281/7 "2006-03-27T16:41:14Z")
> [@jim](#): > > Did you look for vacuum leaks? I have not, That is a good idea thank you, I dont know if this would have anything to do with it, but the MAS has been replaced a few times, and i know that sometimes it idles rough, butu if i hold it around 2500 for a min, it then runs fine??? but im checking the vacuum llines here in a min. ---
**Author:** ![F-B-A](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/f-b-a/32/6022_2.png) [@F-B-A](https://forums.speedlife.net/u/F-B-A)\ **Post date:** [March 28, 2006, 11:18am UTC](https://forums.speedlife.net/t/serious-mechanical-question-about-lost-power/181281/8 "2006-03-28T11:18:54Z")
Bump, any more suggestions, i havent found a vac leak yet, i put 93octane in iut today but dont see a differance, and i pulled the plugs and found then pretty black even thoough they have only 500 miles on them? ---
**Author:** ![flyinglow57](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/flyinglow57/32/5978_2.png) [@flyinglow57](https://forums.speedlife.net/u/flyinglow57)\ **Post date:** [March 28, 2006, 11:22am UTC](https://forums.speedlife.net/t/serious-mechanical-question-about-lost-power/181281/9 "2006-03-28T11:22:10Z")
clocked cat. my dads firebird was fuckin strugglin to get to 3000rpm when his was clogged ---
**Author:** ![Pewter](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pewter/32/5936_2.png) [@Pewter](https://forums.speedlife.net/u/Pewter)\ **Post date:** [March 28, 2006, 12:59pm UTC](https://forums.speedlife.net/t/serious-mechanical-question-about-lost-power/181281/10 "2006-03-28T12:59:35Z")
potato in ur tail pipe? ---
**Author:** ![F-B-A](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/f-b-a/32/6022_2.png) [@F-B-A](https://forums.speedlife.net/u/F-B-A)\ **Post date:** [March 28, 2006, 1:10pm UTC](https://forums.speedlife.net/t/serious-mechanical-question-about-lost-power/181281/11 "2006-03-28T13:10:53Z")
> [@pewterss](#): > > potato in ur tail pipe? No potatoe in the tail pipe. Ive had that problem before, still cant figure out how they grow in thier :dunno: No clog in the cat. Actullly about 2 weeks ago the pipe had a whole in it so i removed the cat awaiting a new exhaust. and now the pipe entering the muffler is broken from beating the pipe expander on. Do you think lack of back pressure is causing this? ---
**Author:** ![imported\_jim](https://avatars.discourse-cdn.com/v4/letter/i/53a042/32.png) [@imported\_jim](https://forums.speedlife.net/u/imported_jim)\ **Post date:** [March 28, 2006, 3:48pm UTC](https://forums.speedlife.net/t/serious-mechanical-question-about-lost-power/181281/12 "2006-03-28T15:48:40Z")
No, lack of back pressure won’t cause your problem. ---
**Author:** ![eurodad](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/eurodad/32/5988_2.png) [@eurodad](https://forums.speedlife.net/u/eurodad)\ **Post date:** [March 28, 2006, 3:51pm UTC](https://forums.speedlife.net/t/serious-mechanical-question-about-lost-power/181281/13 "2006-03-28T15:51:45Z")
> [@pewterss](#): > > potato in ur tail pipe? a turd in the fart can? ---
**Author:** ![F-B-A](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/f-b-a/32/6022_2.png) [@F-B-A](https://forums.speedlife.net/u/F-B-A)\ **Post date:** [March 28, 2006, 4:22pm UTC](https://forums.speedlife.net/t/serious-mechanical-question-about-lost-power/181281/14 "2006-03-28T16:22:07Z")
> [@5ltr eater](#): > > a turd in the fart can? :kekegay: No, I dont have a fart can, im really not a true ricer. but i guess i deserve that. ---
**Author:** ![dalifts](https://avatars.discourse-cdn.com/v4/letter/d/a3d4f5/32.png) [@dalifts](https://forums.speedlife.net/u/dalifts)\ **Post date:** [March 28, 2006, 8:56pm UTC](https://forums.speedlife.net/t/serious-mechanical-question-about-lost-power/181281/15 "2006-03-28T20:56:30Z")
I had someone have the same probly and his distrib was going bad. Car would run ok but then it would rev out at like 3200 ---
**Author:** ![fmfkid250](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fmfkid250/32/5973_2.png) [@fmfkid250](https://forums.speedlife.net/u/fmfkid250)\ **Post date:** [March 29, 2006, 6:13am UTC](https://forums.speedlife.net/t/serious-mechanical-question-about-lost-power/181281/16 "2006-03-29T06:13:03Z")
break it down, fuel or spark measure a/f ratio if thats good, its spark and if its not any of that, you dont even want to know what it is… ---
**Author:** ![F-B-A](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/f-b-a/32/6022_2.png) [@F-B-A](https://forums.speedlife.net/u/F-B-A)\ **Post date:** [March 29, 2006, 7:29am UTC](https://forums.speedlife.net/t/serious-mechanical-question-about-lost-power/181281/17 "2006-03-29T07:29:57Z")
> [@fmfkid250](#): > > break it down, fuel or spark > > measure a/f ratio if thats good, its spark and if its not any of that, you dont even want to know what it is… Well if motor is screwed up, thats good cause that will force the sr20det, but i’d like to run this engine another year, so without a a/f gauge how do i measure it, and if like a previous post mentioned the distributor is screwed up, can i buy one rebuilt or new or??? I ve never changed that before. -Thanks guys for the suggestions ---
**Author:** ![fmfkid250](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fmfkid250/32/5973_2.png) [@fmfkid250](https://forums.speedlife.net/u/fmfkid250)\ **Post date:** [March 29, 2006, 9:27am UTC](https://forums.speedlife.net/t/serious-mechanical-question-about-lost-power/181281/18 "2006-03-29T09:27:51Z")
> [@firstnbass](#): > > Well if motor is screwed up, thats good cause that will force the sr20det, but i’d like to run this engine another year, so without a a/f gauge how do i measure it, and if like a previous post mentioned the distributor is screwed up, can i buy one rebuilt or new or??? I ve never changed that before. > -Thanks guys for the suggestions umm, is it smoking at all? and if it is what color is the smoke/ ---
**Author:** ![F-B-A](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/f-b-a/32/6022_2.png) [@F-B-A](https://forums.speedlife.net/u/F-B-A)\ **Post date:** [March 29, 2006, 9:35am UTC](https://forums.speedlife.net/t/serious-mechanical-question-about-lost-power/181281/19 "2006-03-29T09:35:56Z")
Thats the funny part, no smoke, if i over rev it it will puff a little touch of black, but thats only if i run it to almost 7grand. ---
**Author:** ![fmfkid250](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fmfkid250/32/5973_2.png) [@fmfkid250](https://forums.speedlife.net/u/fmfkid250)\ **Post date:** [March 29, 2006, 9:37am UTC](https://forums.speedlife.net/t/serious-mechanical-question-about-lost-power/181281/20 "2006-03-29T09:37:10Z")
then its prob ignition, or somethen else dumb like and air filter or somethen, i had a similar problem when my hatch still had 73hp, it endded up a wire in the dizzy being loose… [Next page](https://forums.speedlife.net/t/serious-mechanical-question-about-lost-power/181281.md?page=2)