cqtama Posted December 31, 2009 Report Share Posted December 31, 2009 this is gunna be a long one guys. sorry ok so i have an '01 chevy blazer and i've been having some problems with it. it was running really rough and smelling like fuel so i threw my neighbers snap on scanner on it. its the red one that looks kinda like a brick. so anyway, it came up running rich on bank 1 and 2, and random multiple misfire. so i tried to take care of the misfire problem by changing the spark plugs, then the wires, then the distibuter cap (they were all the original ac delco parts with 104000 miles on um). none of that worked. helped a little but not much. so at this point i was kinda stumped. so i brought it over to goodyear to have them check it out. after about an hour and a half they call me back and say its a bad fuel injector, gunna cost around 500 between diognostic time, parts and labor. so i let him go ahead and do it. after hes done he calls me back and says the injector helped but the fuel pressure regulator is bad also and its gunna be another 200. so i was kinda pissed but i let him do it anyway. sooo $700 later the guy calls me back and goes ok the injector and the fuel pressure reg. took care of the running rich problem, but its still misfiring at the number 4 cylander. it could be that since it was running so rich there is exces fuel in the cylender that just needs to be burnt off, or if its not better in a few weeks possibly a cam. so what do you guys think? is this guy telling me the truth or he completely full of it? it is running better and starting quicker than it used to. but i still have the check engine light from the misfire and its still running pretty rough at idle. Quote R.I.P '01 blazer you treated my ears well until your transmission blew up. New Project [top secret] 149.0 db on music driver window open; so close I feel some boners are fueled by viagra and not true intimacy!......if you know what i mean.... I swear... sometimes I wish I was retarded so I could just agree with everyone x. Link to comment Share on other sites More sharing options...
jmitch Posted December 31, 2009 Report Share Posted December 31, 2009 go to ya buddy scanner and see what code it throw cuz its multiple things that can cause a misfire and it may be just 1 thing that tied along with those systems that could make it misfire and burn rich. Quote I know a lil about everything so dont call me Mr. Know it All. Link to comment Share on other sites More sharing options...
Ray Posted December 31, 2009 Report Share Posted December 31, 2009 this is gunna be a long one guys. sorryok so i have an '01 chevy blazer and i've been having some problems with it. it was running really rough and smelling like fuel so i threw my neighbers snap on scanner on it. its the red one that looks kinda like a brick. so anyway, it came up running rich on bank 1 and 2, and random multiple misfire. so i tried to take care of the misfire problem by changing the spark plugs, then the wires, then the distibuter cap (they were all the original ac delco parts with 104000 miles on um). none of that worked. helped a little but not much. so at this point i was kinda stumped. so i brought it over to goodyear to have them check it out. after about an hour and a half they call me back and say its a bad fuel injector, gunna cost around 500 between diognostic time, parts and labor. so i let him go ahead and do it. after hes done he calls me back and says the injector helped but the fuel pressure regulator is bad also and its gunna be another 200. so i was kinda pissed but i let him do it anyway. sooo $700 later the guy calls me back and goes ok the injector and the fuel pressure reg. took care of the running rich problem, but its still misfiring at the number 4 cylander. it could be that since it was running so rich there is exces fuel in the cylender that just needs to be burnt off, or if its not better in a few weeks possibly a cam. so what do you guys think? is this guy telling me the truth or he completely full of it? it is running better and starting quicker than it used to. but i still have the check engine light from the misfire and its still running pretty rough at idle. take it to a speed shop. your getting rapped at the "goodyear". you can hook an o-scope to each injector and see if it's misfiring excess fuel will"burn off" in seconds, not weeks. a cam wouldnt be "random" compression test good across the board? leakdown? Quote 2008 California state record holder 157.2 Bassrace2009 California state record holder 157.0 BassraceRollin 50's 158.7db2009 King of Cali Bassrace2009 USACi score 160.5 @ 42hz Link to comment Share on other sites More sharing options...
Sampsonite Posted December 31, 2009 Report Share Posted December 31, 2009 take it to a speed shop.your getting rapped at the "goodyear". you can hook an o-scope to each injector and see if it's misfiring excess fuel will"burn off" in seconds, not weeks. a cam wouldnt be "random" compression test good across the board? leakdown? I didn't know You were a mechanic Ray But yes, all this information is correct^^^^ Quote --Sampson 816-591-6592 www.kcrimshop.com Link to comment Share on other sites More sharing options...
tacomabanga1986 Posted December 31, 2009 Report Share Posted December 31, 2009 did u change the distribitor pin also? but missfireing could halfto do with electrical and cam too, not enough air to fuel mixture n u get no boom in that cylinder, could be the timeing also but i dnt see how its missfireing on just one cylinder off timeing might be a bad valve if its a missfire cause without it lettin enough fule into the chamber u get no explosion and no vroom heres a video of how one works n what all it takes to make one run, maby u can check all the cheap stuff first befor u go into buyin a cam n what knot name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src=" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed></object>"> name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src=" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed></object>" type="application/x-shockwave-flash" width="425" height="350">im not a mechanic but my uncle is n i can ask him if u want me to cause replaceing a cam aint cheap but replaceing a valve aint either hope u get it fixed, did u try checkin the fuel lines to make sure ur gettin fuel throughout the whole engine? Quote here's a link to my system 99 toyota tacoma , 2 mtx 8000 1504's in a sealed downfire , 1000w memphis amp here's a link to my other system my 90 geo prizm test car heres a thread i got of new songs u can dl that are legal = Some Good Bangage/you Can Dl These Free And Legit Link to comment Share on other sites More sharing options...
BeAlLsTaR13 Posted December 31, 2009 Report Share Posted December 31, 2009 i always take things to the local mechs, not the major ones like monroe, goodyear, firestone etc... they just rip you off hard Quote Team Sundown Audio**CURRENT** -- 2012 Scion tC Build Click Here **OLD** -- 2002 Pontiac Grand AM Build Click Herecheck them out, slap me a comment2002 Pontiac Grand AM SE 2.2l 4 cylinder ecotec.-------------------------------------------------------------------Head Unit - Alpine CDA-9887Subs - 2x Z 12 v.2s - v.3 + NS Soft partsAmplifier - Sundown Audio SAZ-3500DEnclosure - 3.33 Cubes tuned to 34.66hzFront Stage - JBL P660c 6.5" ComponentsRear Deck - Powerbass 4xl 6.5" Mid-RangeFront Stage Amplifier - Sundown Audio SAX-100.4DWires - Kicker Hyperflex 1/0, KnuKonceptz 1/0, Knu 4 and 8 Gauge, Kicker RCAsElectrical - 275 AMP DC Power H/O Alternator, XS Power S3400, XS Power D2700Videos - http://www.youtube.com/user/BeAILsTaR13------------------------------------------------------------------- Link to comment Share on other sites More sharing options...
cqtama Posted December 31, 2009 Author Report Share Posted December 31, 2009 ok my frieds got an oscope i might give him a call. how do i scan it wit hthe oscope? also the compression on the number 4 cyl is a liitle low . not sure exactly what it was but not as much asw it should be. thanks guys Quote R.I.P '01 blazer you treated my ears well until your transmission blew up. New Project [top secret] 149.0 db on music driver window open; so close I feel some boners are fueled by viagra and not true intimacy!......if you know what i mean.... I swear... sometimes I wish I was retarded so I could just agree with everyone x. Link to comment Share on other sites More sharing options...
jack Posted December 31, 2009 Report Share Posted December 31, 2009 Sounds legit, but did he just replace 1 injector? If so, thats HIGH...dont know how many he replaed but remember that on those engines the injector rail is inside of the intake manifold so ther is a lot o R&R. prob about 3-4hrs at 80-90- per hour soooo Quote http://www.stevemeadedesigns.com/board/ind...showtopic=29213 "sleeper build" (1) DC AUDIO Level4XL 10 (2) PowermasterD2700 batteries ALL FOR SALE TEAM DC AUDIO TEAM DIRTFLOORPOOR Link to comment Share on other sites More sharing options...
cqtama Posted December 31, 2009 Author Report Share Posted December 31, 2009 yea he only did one and i double checked that because i though it sounded high too. but after some googel searching i found out how muich of a pain in the ass it is to get to Quote R.I.P '01 blazer you treated my ears well until your transmission blew up. New Project [top secret] 149.0 db on music driver window open; so close I feel some boners are fueled by viagra and not true intimacy!......if you know what i mean.... I swear... sometimes I wish I was retarded so I could just agree with everyone x. Link to comment Share on other sites More sharing options...
Ray Posted December 31, 2009 Report Share Posted December 31, 2009 well a bad or bent valve would not be random. no fucking way its timing. how low was the compression on cyl 4? to use the o-scope just set it to a/c volts and probe both injector wires. it will look like a bunch of spikes.... if it stumbles you will notice the spike missing. and sam.. "I didn't know You were a mechanic Ray blum.gif lol" I know my fair share. It's kinda my job to know. I work on cars all day, stereo or not , i think a tech should know vehicles inside and out. Im MECP advanced cert. and ase cert. Lets see, alot of people dont know Im a helicopter depot level turbine repairer. Quote 2008 California state record holder 157.2 Bassrace2009 California state record holder 157.0 BassraceRollin 50's 158.7db2009 King of Cali Bassrace2009 USACi score 160.5 @ 42hz Link to comment Share on other sites More sharing options...
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