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Couple questions, again.

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Old 07-31-04, 03:27 PM
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Couple questions, again.

What would happen if you put the leading plugs in the trailing position, or vice versa, or just mixed them all up all together? Also, I hear people say something about the Poor Man's Blow Off Valve which makes the sound louder? How is this done?
Old 07-31-04, 03:34 PM
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Mixing up the plug wires would change the timing on the plugs firing. That could have potentially have very destructive results.....If you are talking about running different plug types, you can run four "trailing type" plugs for all four positions. Many of us with lightly to moderately modded cars do this.

You can vent the stock BOV hose instead of running it back to the stock intake box. This will be much louder, but be prepared for a nice oil mist to be blown all over the inside of your engine bay.
Old 07-31-04, 03:38 PM
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Alright, So it wouldn't matter where the plugs where? If my car is running where the plugs are now, and has been for a week, they are probably right?
Old 07-31-04, 03:57 PM
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Originally Posted by dexmex88
Also, I hear people say something about the Poor Man's Blow Off Valve which makes the sound louder? How is this done?
It's called venting to atmosphere - you just unplug the end that goes into the airbox. Extremely rice, IMO.
Old 07-31-04, 04:13 PM
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I took the 2 plugs on top of each other out, they were both trailing? I s this correct, I know for sure the other 2 I haven't taken out are leading.
Attached Thumbnails Couple questions, again.-img_0304.jpg   Couple questions, again.-img_0305.jpg  
Old 07-31-04, 04:25 PM
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This is so messed up, I have been driving the car like this? I think they are in wrong. The 2 leading plug wires are in the middle correct? The 2 trailing plug wires are on the left and right correct? Well one of my middle wires(Leading?) was hooked to one of the trailing plugs(right side) and one of the trailing wires(left) was hooked to one of the leading plugs(also left). Aren't the wires and plugs supposed to match or are my wires on there wrong? The picture of the plug holes is the right side near the firewall, both were trailing.
Old 07-31-04, 05:02 PM
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The Factory Service Manual. Learn it, live it, love it. Download it or buy it. http://www.iluvmyrx7.com

Page G-20.

Last edited by dgeesaman; 07-31-04 at 05:05 PM.
Old 07-31-04, 05:05 PM
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Why do people **** with their cars without knowing what they are doing?

There are three ignition coils: two trailing and one leading. The leading is in the center and has the two plug wires together until it splits out and feeds both leading plugs (the bottom two). Each trailing coil has a single wire running to a single trailing plug (the top two).

From the factory, the car uses two 7 heat range plugs in the leading position, and two 9 heat range plugs in the trailing position. Lightly to moderately modded cars typically run 9 heat range plugs for all four.

If your plugs/wires are not as described above, fix it immediately. People have blown engines because of improper wire routing.
Old 07-31-04, 05:09 PM
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Ok think of it like this, L..eading is the L..ower hole T...railing is the T..op hole. This would definatly be the reason your car stalls. The trailing plugs fire 15-20 degrees after the leading plugs, so if the the wires were swapped, it would put the spark at the wrong place at the wrong time. Also, the trailing plugs are buried in a cavity in the rotor housing, which messes up flame propagation, as well as other things. Make sure you have L1 coil run to the L1 plug, L2 to L2, T1 to T1, etc. I've heard the leading fires at the same time on both rotors, but it's always good to have them where ther supposed to go.

-E
Old 07-31-04, 05:12 PM
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Originally Posted by rynberg
Why do people **** with their cars without knowing what they are doing?

There are three ignition coils: two trailing and one leading. The leading is in the center and has the two plug wires together until it splits out and feeds both leading plugs (the bottom two). Each trailing coil has a single wire running to a single trailing plug (the top two).

From the factory, the car uses two 7 heat range plugs in the leading position, and two 9 heat range plugs in the trailing position. Lightly to moderately modded cars typically run 9 heat range plugs for all four.

If your plugs/wires are not as described above, fix it immediately. People have blown engines because of improper wire routing.

I am sorry I am not almighty like you and know everything. I was just trying to make sure everything was right. By what you just said, the top 2 are supposed to be the trailing and the bottom the leading, but that isn't the way mine are. My 2 right holes both have trailing plugs in them, and the 2 left holes both have leading plugs. So I have one leading in the top, and one trailing, one leading in the bottom and one trailing. So would that make my car run messed up, because it has been.
Old 07-31-04, 05:15 PM
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Originally Posted by anobii
Ok think of it like this, L..eading is the L..ower hole T...railing is the T..op hole. This would definatly be the reason your car stalls. The trailing plugs fire 15-20 degrees after the leading plugs, so if the the wires were swapped, it would put the spark at the wrong place at the wrong time. Also, the trailing plugs are buried in a cavity in the rotor housing, which messes up flame propagation, as well as other things. Make sure you have L1 coil run to the L1 plug, L2 to L2, T1 to T1, etc. I've heard the leading fires at the same time on both rotors, but it's always good to have them where ther supposed to go.

-E
Thanks man, I guess this could have been my problem. The guy I bought the car from must have been a total idiot. Well I guess that makes me an idiot too because I didn't think to check them.
Old 07-31-04, 05:17 PM
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Originally Posted by dexmex88
I am sorry I am not almighty like you and know everything. I was just trying to make sure everything was right.
I never claimed to know everything and I most certainly don't, but you can bet your *** that I would at least READ THE SERVICE MANUAL if I was messing with something on the car.

You are messing with something very important to the running of the engine and it appears that you spent zero time learning about it first. That's a bad move.

Originally Posted by dexmex88
By what you just said, the top 2 are supposed to be the trailing and the bottom the leading, but that isn't the way mine are. My 2 right holes both have trailing plugs in them, and the 2 left holes both have leading plugs. So I have one leading in the top, and one trailing, one leading in the bottom and one trailing. So would that make my car run messed up, because it has been.
Why would you even ask that question? You know something is wrong -- fix it.
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