Stomp! And Bang (back Fire).

LM5000 · 06-03-2003, 10:37 PM

GUYS! I JUST INSTALLED COLD AIR KIT, HARMONIC BALANCER, AND REMOVED POLLUTION PIPE FROM THE BACK OF THE ENGINE. AFTER TOOK THE CAR FOR A TEST DRIVE, I NOTICED THAT WHEN I STOMP ON THE GAS PEDAL WHEN DRIVING SLOWLY, THE CAR SEEMED OUT OF BREATH. I MEAN, INSTEAD OF LEAP FORWARD, IT JUST STALLED AND BACK FIRE. IF I SLOWLY STEP ON IT, THE CAR WOULD HAVE NO PROBLEM PICKING UP ON THE SPEED. BUT EVERYTIME I GUN IT OR DOWN SHIFT TO PASS, THE CAR ACT AS IF IT RUN OUT OF AIR. I PLUGED BOTH AIR PIPE HOLES ON THE BACK OF THE ENGINE AND CHECK FOR LEAK THERE BUT CANNOT FIND ANYTHING. THE CAR WAS FINE BEFORE THE CHANGE. NOW, THIS IS WHEN YOU GUYS STEP IN, SEE IF YOU CAN HELP ME OUT, PLEASE.

Mountain Main · 06-04-2003, 04:36 AM

did you plug the vaccum lines that came out of the smog pump? Have you ran any codes? Have you run used any starting fluid to check for leaks. Could you of messed up a spark plug wire when removing the smog pump? Did you remove the smog pump?

Mountain Main

LM5000 · 06-04-2003, 05:05 PM

Mountian Man, yes, I plugged both of two holes in the back of the head, no, i have not run code scanner just yet, yes, I removed smog pump ( long time ago ), no, I have not check for vacume leak yet and I do not know if I mess up the plug's cable. I will try to do things that you suggested, Thank you. If the problem still there, I will come back and challenge your brain again.

06-03-2003, 10:37 PM	#1
LM5000 Registered Member Join Date: May 2003 Location: Miami Posts: 13	Stomp! And Bang (back Fire). GUYS! I JUST INSTALLED COLD AIR KIT, HARMONIC BALANCER, AND REMOVED POLLUTION PIPE FROM THE BACK OF THE ENGINE. AFTER TOOK THE CAR FOR A TEST DRIVE, I NOTICED THAT WHEN I STOMP ON THE GAS PEDAL WHEN DRIVING SLOWLY, THE CAR SEEMED OUT OF BREATH. I MEAN, INSTEAD OF LEAP FORWARD, IT JUST STALLED AND BACK FIRE. IF I SLOWLY STEP ON IT, THE CAR WOULD HAVE NO PROBLEM PICKING UP ON THE SPEED. BUT EVERYTIME I GUN IT OR DOWN SHIFT TO PASS, THE CAR ACT AS IF IT RUN OUT OF AIR. I PLUGED BOTH AIR PIPE HOLES ON THE BACK OF THE ENGINE AND CHECK FOR LEAK THERE BUT CANNOT FIND ANYTHING. THE CAR WAS FINE BEFORE THE CHANGE. NOW, THIS IS WHEN YOU GUYS STEP IN, SEE IF YOU CAN HELP ME OUT, PLEASE. __________________ 93 coupe LX with procarparts cold air system, 4.10 gear,BBK headers, hedman X pipe, mac catback system, aluminum drive shaft, cobra tranny, king cobra clutch, march pullies, Edelbrok intake (port), 73 mm mass air, 3 cores radiator, nitrous works 125 shots, blue thunder shifter with aluminum knob, lakewook traction bars, and weld 15x6 front and 15x10 rear.

06-04-2003, 04:36 AM	#2
Mountain Main Registered Member Join Date: Feb 2003 Location: Minturn, CO 81645 Posts: 109	vaccum did you plug the vaccum lines that came out of the smog pump? Have you ran any codes? Have you run used any starting fluid to check for leaks. Could you of messed up a spark plug wire when removing the smog pump? Did you remove the smog pump? Mountain Main

06-04-2003, 05:05 PM	#3
LM5000 Registered Member Join Date: May 2003 Location: Miami Posts: 13	Mountian Man, yes, I plugged both of two holes in the back of the head, no, i have not run code scanner just yet, yes, I removed smog pump ( long time ago ), no, I have not check for vacume leak yet and I do not know if I mess up the plug's cable. I will try to do things that you suggested, Thank you. If the problem still there, I will come back and challenge your brain again. __________________ 93 coupe LX with procarparts cold air system, 4.10 gear,BBK headers, hedman X pipe, mac catback system, aluminum drive shaft, cobra tranny, king cobra clutch, march pullies, Edelbrok intake (port), 73 mm mass air, 3 cores radiator, nitrous works 125 shots, blue thunder shifter with aluminum knob, lakewook traction bars, and weld 15x6 front and 15x10 rear.