Help!!!! Major Issue!!

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Help!!!! Major Issue!!

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Help!!!! Major Issue!! - 3/25/2008 6:13:35 PM

smarsenal

Posts: 15
Joined: 2/16/2008
Status: offline

I've got an EVO IX with following mods:
-ported exhaust manifold (Buschur)
-3" downpipe (Buschur)
-BLOX 3 " Testpipe
-Buschur UICP with stock BOV
-Buschur cold air intake MAF
-Buschur inline MBC at 20 psi

Anyways, I just replaced the spark plugs with the same as stock (NGK Laser Iridium) plugs. Very easy job I thought. I went with the pre-gap on the plug as it came (about 0.24) . Well, as soon as I started it up, it was idling very rough, then it started to back fire and misfire. I then tried to increase the gap to 0.26 and same thing. Then I tried to under-gap it (0.22) and once again the same thing!! So now I tried to put the old plugs in and once again, same misfire and backfire along with rough idle. I can smell a lot of fuel as it sits at idle. Can this be an air:fuel ratio issue.
Please help, I need to get this car running soon!!!
Thanks in advance!!

Post #: 1

RE: Help!!!! Major Issue!! - 3/25/2008 6:54:50 PM

Sebba

Posts: 14035
Joined: 2/20/2006
From: San Antonio, TX
Status: offline

The stock plugs arent iridium.

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Post #: 2

RE: Help!!!! Major Issue!! - 3/25/2008 7:23:39 PM

EMonz57

Posts: 11222
Joined: 5/13/2005
Status: offline

did you plug wires in the right order?

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1993 Renn Red Supra Turbo 6spd

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Post #: 3

RE: Help!!!! Major Issue!! - 3/25/2008 10:41:12 PM

Sebba

Posts: 14035
Joined: 2/20/2006
From: San Antonio, TX
Status: offline

It wouldnt even start if you had them the wrong order

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RE: Help!!!! Major Issue!! - 3/26/2008 5:46:07 AM

EMonz57

Posts: 11222
Joined: 5/13/2005
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Yea it would depending on how they are plugged in. It would just mis like a mofo

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1993 Renn Red Supra Turbo 6spd

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Post #: 5

RE: Help!!!! Major Issue!! - 3/26/2008 12:44:22 PM

Sebba

Posts: 14035
Joined: 2/20/2006
From: San Antonio, TX
Status: offline

I did it once to a dude and the car wouldnt even start.

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RE: Help!!!! Major Issue!! - 3/26/2008 3:33:38 PM

EMonz57

Posts: 11222
Joined: 5/13/2005
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It depends how they are plugged in

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1993 Renn Red Supra Turbo 6spd

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Post #: 7

RE: Help!!!! Major Issue!! - 3/26/2008 5:41:43 PM

smarsenal

Posts: 15
Joined: 2/16/2008
Status: offline

What's the proper order? I plugged them in just as they were before I took them out. The Evo IX plugs are NGK iridiums though. I don't know what to do. Do you think I have a wire issue?

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Post #: 8

RE: Help!!!! Major Issue!! - 3/26/2008 7:08:30 PM

EMonz57

Posts: 11222
Joined: 5/13/2005
Status: offline

Have you done any other work on the car around the same time?

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1993 Renn Red Supra Turbo 6spd

(in reply to smarsenal)

Post #: 9

RE: Help!!!! Major Issue!! - 4/7/2008 6:33:54 PM

smarsenal

Posts: 15
Joined: 2/16/2008
Status: offline

OK, I got it running again. It was the coil pack and the wires that were gone. Why would these go bad now though?