Nitrous Detonation! PLEASE HELP!

ricerraper33 · April 4th, 2008, 10:57 PM

Originally Posted by GreenFaleen

you were low in the RPM when you sprayed, IDK if the v6 pulls enough air at 2000rpm to pull the gas easy enough, you probably puddled your fuel which led to the back fire, wait till later in your rpm to spray and use 93 octane, the back fire messed with your IAC when it threw off the filter I bet.

ya thats what i think 2 i know it was dumb running 87 stock plugs and 2000 rpms hey i learned the hard way i just hope that the iac is the only thing fucked up

SWEET2KSTANG · April 5th, 2008, 12:12 AM

not too big of a deal, some of us 4.6 guys have blown out intake manifold. look on the bright side, what happened to you so far has been a cheaper fix.

itschristorres8 · April 5th, 2008, 12:53 AM

you need 764 autolites those are 1 stepp cooler plugs
nitrous backfire is any nitrous owners worst fear
check your IAC that may be why your idle is shitty
probably just clean it with carb cleaner
if not send me $10
i have 2 IAC as my house

ricerraper33 · April 5th, 2008, 01:28 AM

Originally Posted by itschristorres8

you need 764 autolites those are 1 stepp cooler plugs
nitrous backfire is any nitrous owners worst fear
check your IAC that may be why your idle is shitty
probably just clean it with carb cleaner
if not send me $10
i have 2 IAC as my house

ya i changed my spark plugs today ibought them from advanced herethey r the guy told me they where a step colder plugs and i think there like top of the line well for advanced at least....

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itschristorres8 · April 5th, 2008, 01:42 AM

btw always use 91+ on spray =) good pratice

ricerraper33 · April 5th, 2008, 10:28 AM

Originally Posted by itschristorres8

btw always use 91+ on spray =) good pratice

ya yesturday i filled up with 93 octane and changed my plugs i just don want that to happen again kinda scared....

GreenFaleen · April 5th, 2008, 10:53 AM

What plugs did he give you and what number are they? Cause it is easy to decode a spark plug wrong,

Your lucky though I have a plastic intake manifold I back fire i get pieces

ricerraper33 · April 5th, 2008, 11:09 AM

Originally Posted by GreenFaleen

What plugs did he give you and what number are they? Cause it is easy to decode a spark plug wrong,

Your lucky though I have a plastic intake manifold I back fire i get pieces

ya i know i have an ebay intake and just the filter blew off lol but my iac is shit. heres the spark plugs i bought

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itschristorres8 · April 5th, 2008, 02:20 PM

you cannot see a brand spark plug in that link

psfracer · April 6th, 2008, 12:11 AM

If you changed your spark plugs to a step colder---how did the original ones look that you pulled out? When you have detonation, the plugs will show it.

You really need a window switch, activate it at to low of an rpm and a backfire will result. I had that happen to me a couple years ago.....

Always run good gas, a colder plug, adjust your timing accordingly, and get a window switch on there.....

ricerraper33 · April 6th, 2008, 12:31 AM

Originally Posted by psfracer

If you changed your spark plugs to a step colder---how did the original ones look that you pulled out? When you have detonation, the plugs will show it.

You really need a window switch, activate it at to low of an rpm and a backfire will result. I had that happen to me a couple years ago.....

Always run good gas, a colder plug, adjust your timing accordingly, and get a window switch on there.....

ya i have a window switch and i put 93 in now but havent testedthe new plugs or gas. kinda scared...

but what r the spark plugs supposed to looklike becasue they where the origanal havent been changed since 99 ll but they where just all black and shit

psfracer · April 6th, 2008, 12:36 PM

If you had detonation, the plugs would have had some red specks all over the porcelain. If it was really bad, the electrode would be melted, like the picture below.

With 93 octane, a 75 shot, and a colder plug you should be ok now--but you also mentioned the car wasn't running right after the backfire--did you get that fixed? You definitely don't want to try it if the car isn't running right on the motor.

ricerraper33 · April 6th, 2008, 02:16 PM

Originally Posted by psfracer

If you had detonation, the plugs would have had some red specks all over the porcelain. If it was really bad, the electrode would be melted, like the picture below.

With 93 octane, a 75 shot, and a colder plug you should be ok now--but you also mentioned the car wasn't running right after the backfire--did you get that fixed? You definitely don't want to try it if the car isn't running right on the motor.

ya i thinbk its the iac but not sure becasue whenever i turn the car on it idles like shit like at 500 rpms and when i get on it somtimes first gear will run normal and when ishift ino 2nd it wants to fallon its face it boggs down andrunslike complete shit! i dunno if its just the iac or not?

April 5th, 2008, 12:12 AM	#22
SWEET2KSTANG MM Fanatic 2000 mustang gt 12.01@114.69 Join Date: Oct 2006 Location: N.W. AR Posts: 3,973	not too big of a deal, some of us 4.6 guys have blown out intake manifold. look on the bright side, what happened to you so far has been a cheaper fix. __________________ stock long block, bolt ons, slicks, and a little squeeze 1/4 E.T. 12.06@114.69 Only two defining forces have ever offered to die for you: 1. Jesus Christ 2. The American G. I. One died for your soul, the other for your freedom.

April 5th, 2008, 12:53 AM	#23
itschristorres8 I Post Entirely Way Too Much 2000 Mustang V6 n proud 13.1@107mph 2.1-60' Join Date: Aug 2006 Location: south florida Posts: 13,907	you need 764 autolites those are 1 stepp cooler plugs nitrous backfire is any nitrous owners worst fear check your IAC that may be why your idle is shitty probably just clean it with carb cleaner if not send me $10 i have 2 IAC as my house __________________ 390rwhp V6 mustang stock bottom end

April 5th, 2008, 01:42 AM	#25
itschristorres8 I Post Entirely Way Too Much 2000 Mustang V6 n proud 13.1@107mph 2.1-60' Join Date: Aug 2006 Location: south florida Posts: 13,907	btw always use 91+ on spray =) good pratice __________________ 390rwhp V6 mustang stock bottom end

April 5th, 2008, 10:53 AM	#27
GreenFaleen Resident MM Ricer 2006 Scion tC 13.9@103/8.9@81 Join Date: Nov 2006 Location: Raleigh/Lenoir, NC Posts: 8,809	What plugs did he give you and what number are they? Cause it is easy to decode a spark plug wrong, Your lucky though I have a plastic intake manifold I back fire i get pieces __________________ Buy My Guitar and Amp Scion Tc-strup racing header, CAI, Ground Kit, NOS 100shot tuning and install in process, Custom suspension, Doc. I 50% STS "Horsepower sells cars, torque wins races." -Carroll Shelby Thanks To My Sponsors: Strup Performance

April 5th, 2008, 02:20 PM	#29
itschristorres8 I Post Entirely Way Too Much 2000 Mustang V6 n proud 13.1@107mph 2.1-60' Join Date: Aug 2006 Location: south florida Posts: 13,907	you cannot see a brand spark plug in that link __________________ 390rwhp V6 mustang stock bottom end

April 6th, 2008, 12:11 AM	#30
psfracer Regular $psfracer's Avatar$ 2005 mustang GT 10.672 @ 128.42mph Join Date: Apr 2008 Posts: 60	If you changed your spark plugs to a step colder---how did the original ones look that you pulled out? When you have detonation, the plugs will show it. You really need a window switch, activate it at to low of an rpm and a backfire will result. I had that happen to me a couple years ago..... Always run good gas, a colder plug, adjust your timing accordingly, and get a window switch on there.....

April 6th, 2008, 12:36 PM	#32
psfracer Regular $psfracer's Avatar$ 2005 mustang GT 10.672 @ 128.42mph Join Date: Apr 2008 Posts: 60	If you had detonation, the plugs would have had some red specks all over the porcelain. If it was really bad, the electrode would be melted, like the picture below. With 93 octane, a 75 shot, and a colder plug you should be ok now--but you also mentioned the car wasn't running right after the backfire--did you get that fixed? You definitely don't want to try it if the car isn't running right on the motor. Attached Thumbnails __________________ Daily driven 2005 Mustang GT Auto - Whipple @ 16 psi - 577 rwhp 519 rwtq 10.672 @ 128.42. Best 60' 1.43. Best 1/8th 6.74 @ 101.50 mph http://videos.streetfire.net/video/2...-GT_164989.htm

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