Backfire - 2003-04 Mach 1 Registry Owners Club

Mach1Matt · 11-12-2003, 01:08 AM

Tonight while driving I came upon this older Cobra and the driver seemed to want to play a bit so I shift into third, punch it, then as I shift into 4th my car backfires. Never had that happen before and it didn't seem like a good thing. Now suddenly, either my mind is telling me the car has less power, or it really does. I open the hood when I get home and see if i can hear any exhaust leaks but I'm not sure that I hear any. The only sound I hear is a real faint ticking which sounds more like injectors than valves or an exhaust leak. Anyone had their car backfire yet? With my aftermarket exhaust it was definitely kinda loud.

DSG2003Mach1 · 11-12-2003, 01:18 AM

id check the connections on the exhaust, ive heard of em blowin apart on systems that arent welded (this was on some lightnings i think)

on edit..the ticking like injectors..wonder if one is malfunctioning, dumping to much fuel and that caused the backfire? otherwise id say youre a candidate for the silent recall on the ticking heads.

hope it turns out to be nothing serious

BADMACH · 11-12-2003, 02:54 AM

i wouldn't worry about it. mine does it all the time when i downshift and my friends cobra does it also. we both have steeda x pipes with flowmaster cat backs. i think it sounds cool. But i havent noticed any power decrease. Hopefully its just in your head

tallymach1 · 11-13-2003, 12:02 AM

It can happen somtimes on cars that have high-flow cats or no cats at all. I would not worry too much about it.

11-12-2003, 01:08 AM	#1
Mach1Matt Addicted to speed! Join Date: Oct 2003 Location: Santee, CA Posts: 344	Backfire Tonight while driving I came upon this older Cobra and the driver seemed to want to play a bit so I shift into third, punch it, then as I shift into 4th my car backfires. Never had that happen before and it didn't seem like a good thing. Now suddenly, either my mind is telling me the car has less power, or it really does. I open the hood when I get home and see if i can hear any exhaust leaks but I'm not sure that I hear any. The only sound I hear is a real faint ticking which sounds more like injectors than valves or an exhaust leak. Anyone had their car backfire yet? With my aftermarket exhaust it was definitely kinda loud. __________________ "I'd rather push a Ford than drive a Chevy!" 2003 Oxford White Mach1 IUP Mods: K&N, Removed MAF screen and silencer, MRT Tri-ax shifter, Meziere Electric Water Pump, Magnaflow Magnapack cat-back, Magnaflow x-pipe w/cats, FRPP Aluminum Driveshaft, FRPP 4.10 Gears, Eaton 31 Spline Posi, Superior 31 Spline Axles, MM Torque Arm, MM Adj Drag Control Arms, MM Panhard Bar, Tokico 5-ways in the rear, H&R Drag Springs, MM Full Length Subframe Connectors, 275/40/17 BFG DRs (very bald), Royal Purple 5w20 Previous Fords: 78 Pinto, 69 Cougar XR7, 72 F100, 84 Ranger, 84 Escort, 96 Ranger, 96 F150, 2001 F150 Best Slip: RT: .758 60': 2.071 1/4: 13.203@107.31

11-12-2003, 01:18 AM	#2
DSG2003Mach1 700 HP Mach Join Date: Nov 2003 Location: Orlando, FL Posts: 8,384	id check the connections on the exhaust, ive heard of em blowin apart on systems that arent welded (this was on some lightnings i think) on edit..the ticking like injectors..wonder if one is malfunctioning, dumping to much fuel and that caused the backfire? otherwise id say youre a candidate for the silent recall on the ticking heads. hope it turns out to be nothing serious __________________ 03 dsg mach1 - MPR built 9.5:1 motor, D1, cams, ported intake, full exhaust, magnum t56, built rear, E85 etc... '12 F150 FX2 Supercrew with Ecoboost daily beater Last edited by DSG2003Mach1; 11-12-2003 at 01:31 AM.

11-13-2003, 12:02 AM	#4
tallymach1 Registered User Join Date: Jun 2003 Location: Fl. Posts: 302	It can happen somtimes on cars that have high-flow cats or no cats at all. I would not worry too much about it. __________________ 2004 Cobra 2003 procharged mach 1 : deceased

11-12-2003, 02:54 AM	#3
BADMACH Registered User Join Date: Jul 2003 Location: cdear park, tx Posts: 29	i wouldn't worry about it. mine does it all the time when i downshift and my friends cobra does it also. we both have steeda x pipes with flowmaster cat backs. i think it sounds cool. But i havent noticed any power decrease. Hopefully its just in your head

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