misfire

a4tek · 03-31-2008, 10:31 PM

hey guys i was wondering if anybody can help me. i have a 2000 blazer 4.3 my check engine light came on and i took it to autozone to get the scanner on and it said random misfire, so i replaced the wires spark plugs rotor and cap and the fuel filter, everything was running smooth until like 2 day ago the light came on again so i took it back and now it said multiple misfire, so ireplace the last thing which was the ignition coil, its running better but the light still on and its not running perfect still want to like chocke when u step on the gas now its doesnt do it all the time but it does. does anyone know what else can i do to solve this problem or should i just take it to the shop!

Yogi · 04-02-2008, 12:29 PM

Sounds like it could be the fuel injection. Check this thread for more info.

Also, here's a thread that shows you how to do it yourself.

Good luck. Let us know what you find.

a4tek · 04-02-2008, 03:55 PM

im going to chesk this out, thanx for ur help man!

pfallone001 · 04-09-2008, 05:53 PM

Quote: Originally Posted by a4tek

im going to chesk this out, thanx for ur help man!

A misfire is catalyst damaging...i wonder if you have a cat clogged due to the misfire you previously had.

Easy48827 · 04-16-2008, 09:06 AM

I've had a string of Service engine soon lights lately. Advanced Auto did a free diagnosis and came up with several codes. Too rich, too lean, misfire, EGR, and something else. The car seemed to run fine except at idle. At idle it was terrible- stalling, surging, and missing. I ran a can of Seafoam thru the system in about 10 gal gas and it ran better. Repeated the process with the next 10 gallons and now is running like new. Hope this helps.

a4tek · 04-18-2008, 09:59 PM

thanx alot for all ur feedback guys!

03-31-2008, 10:31 PM	#1
a4tek Registered User Age: 28 Join Date: Aug 2004 Posts: 19 Location: corpus christi User is: OffLine	misfire hey guys i was wondering if anybody can help me. i have a 2000 blazer 4.3 my check engine light came on and i took it to autozone to get the scanner on and it said random misfire, so i replaced the wires spark plugs rotor and cap and the fuel filter, everything was running smooth until like 2 day ago the light came on again so i took it back and now it said multiple misfire, so ireplace the last thing which was the ignition coil, its running better but the light still on and its not running perfect still want to like chocke when u step on the gas now its doesnt do it all the time but it does. does anyone know what else can i do to solve this problem or should i just take it to the shop!
	[Reply w/Quote]

04-02-2008, 12:29 PM	#2
Yogi Registered (Ab) User Join Date: Feb 2008 Posts: 4,093 Location: League City, TX (Houston) User is: OffLine	Re: misfire Sounds like it could be the fuel injection. Check this thread for more info. Also, here's a thread that shows you how to do it yourself. Good luck. Let us know what you find.
	[Reply w/Quote]

04-02-2008, 03:55 PM	#3
a4tek Registered User Age: 28 Join Date: Aug 2004 Posts: 19 Location: corpus christi User is: OffLine	Re: misfire im going to chesk this out, thanx for ur help man!
	[Reply w/Quote]

04-09-2008, 05:53 PM	#4
pfallone001 Registered User Age: 25 Join Date: Feb 2008 Posts: 131 Location: User is: OffLine	Re: misfire Quote: Originally Posted by a4tek im going to chesk this out, thanx for ur help man! A misfire is catalyst damaging...i wonder if you have a cat clogged due to the misfire you previously had.
	[Reply w/Quote]

04-16-2008, 09:06 AM	#5
Easy48827 Registered User Join Date: Jan 2008 Posts: 10 Location: User is: OffLine	Re: misfire I've had a string of Service engine soon lights lately. Advanced Auto did a free diagnosis and came up with several codes. Too rich, too lean, misfire, EGR, and something else. The car seemed to run fine except at idle. At idle it was terrible- stalling, surging, and missing. I ran a can of Seafoam thru the system in about 10 gal gas and it ran better. Repeated the process with the next 10 gallons and now is running like new. Hope this helps.
	[Reply w/Quote]

04-18-2008, 09:59 PM	#6
a4tek Registered User Age: 28 Join Date: Aug 2004 Posts: 19 Location: corpus christi User is: OffLine	Re: misfire thanx alot for all ur feedback guys!
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