need help w/ finished spark plug install
 

just finished my spark plug install .. 9s for trailings and 7s for leadings .. anyways .. put everything back together .. and just as i start the car .. idles like crap .. car starts bucking and shaking like a heroine addict suffering from withdrawal .. nasty exhaust fumes coming out the exhaust .. any thoughts on what i did wrong? or maybe i knocked something loose? or didnt put things back together right?

Check you map sensor. On driver side firewall next to throttle body. Has vacuum hose with inline filter running to upper intake manifold.

fuuuuck .. i think im dislexic .. would mixing up the trailing plugs with the leading plugs cause this problem?

yes it would lol :) give that a check and hopefully everything will be fine
Edwin

just fixed the order of trailing and leading .. but car still buckles .. and when i just let it run .. car shut off on its own

must be a blown engine... ;)

are you sure you got them in the right order?

oh god dont kid bout that .. yeah im pretty sure

engine
t1=9 t2=9 t1 l1 t2
l1=7 l2=7 l2

T1 L1 T2
L2

hmmm it wont let me write it correctly .. basically the l2 should be directly under the l1

Just remember "T"=top=trailing ..and "L" lower=leading

A plug wire could have become dislodged from one of the coils.

hmm i dont see any loose tubes or anything .. only other thing i can think of is .. does the wire matter? http://www.scuderiaciriani.com/rx7/spark_plug10.jpg
like the trailing 1 and leading 1 looks different from the trailing 2 and leading 2 .. i wasnt too picky on differentiating the wires as i just grabbed the first one i saw and plugged it in

oh thats not my picture by the way .. its from scudineria site and i used it as a reference .. like the ones with 90 degree and the 180 degree black end plugs are in random order in my car

I don't think it really matters but the plug wires with the straight boot plug into the leading coil (middle coil).

wait .. which end is the boot end? the black ends? or the red ends?

I'm not sure if you're using NGK wires, but if so, they are color coded:

http://www.rotormafia.com/96koverhaul/39_new-wires.jpg
http://www.rotormafia.com/96koverhaul/43_newplugs.jpg

Trailing plug wires have blue boots.
Leading plug wires have black boots.

Make sure that the coil harness connectors are fully seated onto the coils.

Sonny

nope using taylor spiro pros

there is no way you could get the boot end mixed up, it couldn't possibly fit the coil packs.

Save yourself the headache and test for spark. Did you touch any of the wire harness, you might have cracked a wire. I know it sounds weird but the wires become very brittle and will break off. Check each plug for spark. If you have good spark in each wire its not your plugs or wiring. Just remember Those things are a son of a biscuit. A vacuum hose off will also cause the symptoms you've discribed, as would an ecu in limp mode.

Are you certain that you tightened all 4 plugs?

Also, although it may be obvious, I will say it anyway: don't drive the car like this. you can definitely pop the motor if you reversed a L and T plug wire, or reversed the Ts.

yeah i tighted the plugs .. i dont know whats wrong .. fuck .. i gotta sleep now .. been at this all day and got work early in the morning.. i know the order is right .. i just re-did the wires again ... this time it seemed to fit more correctly ... but still having same problems .. car idles like crap .. and a shit load of exhaust fumes comes from the engine .. under the hood .. any more suggestions would be greatly appreciated .. could the spark plug wires be bad? what are the symptoms of a bad set of spark plug wires?

i doubt you're plugs are bad since they're new. try swapping out the wires back to stock. maybe it's the wires that are the culprit.

Did you ever check the map sensor line?

I had a problem that seems to be very similiar to yours just a couple weeks ago. Turned out the hose that went to the bottem of the boost sensor right behind the tb attached to the firewall came off. If you did each wire 1 at a time I dont see anyone getting them mixed up due to the wire only being able to go to 1 spot wich I assume is what you did if you used that site for reference. Hope this helps!

-Alex

dunno where the map sensor is :P

It's the thing that says boost sensor on the firewall.

on the firewall, near the location of the brake booster/tps area. Small black sensor, that (incidentally) retails for $407 at Mazda. The nipple is on the underside of the sensor.

If you havent checked it by now, that is most likely your problem. Zip-tie that sucker.

ok good news and bad news .. i just checked the map sensor .. it was that .. the bottom tube that goes to it fell off and i plugged it into a metal nub on the side near the elbow .. thought that was a valve .. anyways .. the car didnt buck like before and now i turned it on .. alot of smoke came out the exhaust ... i mean alot .. and i noticed some water too .. also smoke is coming from under the hood .. between the uim and the turbos .. and when i press down on the clutch and put it into gear (still holding down the clutch) the rpms just starts to rise .. if i let it just rise to a certain rpm .. it shuts off the car .. i dont know which rpm this happens at exactly .. cause i only let it happen once .. got too scared to try it again .. so i shut the car off .. please help!!! i dunno what the hells going on

Um, what fell off and you plugged what where?

i believe it was a vacuum tube that goes to the boost sensor (located at the bottom) .. i just plugged it back in .. before it was unplugged and i plugged it onto a metal nub on the throttle body (just a metal nub which i confused for a valve)

Start your car again. Keep the clutch in, and keep it in gear. If it goes over 2500 rpm, shut it off. You may need to let it run to clean itself out.

Dude I told you to check the map sensor from the get go man. You didn't see my response?

which is the front trailing and which is the rear trailing on the top pic?

on the engine it goes
t1 t2
L1 L2

on the harness or whatever that things called
it goes
&nbspt1 L1 t2
&nbsp L2

i reseted the ecu and the problem with the rpms going up when i put it into gear, while holding down the clutch, went away. now my car is idling really high, about 1300. should i be worried about this? or should i just adjust my idle?

Was the car running fine before you installed the plugs?

was running ok .. wouldnt say fine .. no problems i can think off .. just didnt feel smooth

adjust the screws on the throttle body .. and the screw under the elbow leading towards the throttle body .. basically messed around with it .. and all i can get my car is to lower at 1k rpm .. which is an improvement compared to the 13500 rpm idle .. but before i did the spark plug change it was idling at 750

Adjust the idle screw back where it was and look to see if where the throttle cable and cruise control cable hooks up is resting against it. If not take the little black cap off of the cruise control and look to see if the black tube around the cable is still crimped to the cruise control unit. It may be keeping that peice from resting against the idle screw if its not crimped there. ( happened to me)

-Alex

Edit: If you dont understand what I'm talking about just let me know and I'll take a picture for you. After reading what I wrote myself it sounds kind of confusing lol.

if you could post a pic that would be most appreciated

which idle screw are you talking about? the one under the elbow? the one on the throttle body that is perpendicular to the ground? or the one that is parallel to the ground?

Give me bout 15-20 minutes (damn batterys dead to the dig. camera) and I'll post a pic up of what im speaking of.

-Alex

You shouldn't be adjusting things if the idle was fine before you started working on it. Like said above I would check the throttle cables, maybe disconnect the cable and see if the throttle lever closes a bit. If it does than might be kinked or stuck.

well as for the throttle cables i notice it doesnt seem as tight as it was before .. gonna go check on the cables though

tt rex 7 .. i appreciate the picture :)
i need to sleep now though .. got the worse headache and its passed my bedtime .. ill take a look at it first thing in the morning

You probably could of avoided this problem if you took them out one by one and looked at them and put the new/right plug back in its spot then moved on to the next one.

That wasnt the issue in the first place...He had a hose off, and now theres just something not set back right thats creating an issue with his idle.


-Alex

edit

I realize that but there wouldn’t of been any question of it if he would have followed what i said.

(a) Hindsight is 20/20

(b) what does your avatar text mean?

I didn't get a chance to get the car in the garage to take some pictures (night here) but I did find these pictures that should lead you in the right direction. Both of these pictures are from http://www.scuderiaciriani.com/rx7/i...n_install.html If you look at the first picture where your supposed to remove the throttle and cruise control cable. Second picture is where the cruise control is located and shows what you need to look for to make sure its all right.

-Alex