stumble - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mothertrucker424 · 07-10-2008, 08:00 PM

i own a 1993 blazer with 4.3 vortec(aluminum intake) and on acceration it stumble then smooths out i threw plugs cap wires at it and a egr and a fuel pressure regulator and still the same any ideas

p.s-no codes

bowtier · 07-11-2008, 08:44 AM

fuel filter or filters?

My '01 was acting similar, not so much from a stop, but more accelerating pulling hills. turned out it had 2 gummed up filters.

mothertrucker424 · 07-11-2008, 07:20 PM

also replaced fuel filter i will run a pressure test tomorrow

68C15 · 08-29-2008, 10:44 PM

did the pressure drop after you shut it off? (leaking regulator and/or plastic fuel lines inside the plenum)

mothertrucker424 · 09-01-2008, 05:43 PM

yes i replaced reg. and lines and scrubbed inside plenum (fixed awhile back sorry for not replying sooner)

07-10-2008, 08:00 PM	#1
mothertrucker424 Registered User Join Date: Sep 2006 Location: st pete Posts: 404	stumble i own a 1993 blazer with 4.3 vortec(aluminum intake) and on acceration it stumble then smooths out i threw plugs cap wires at it and a egr and a fuel pressure regulator and still the same any ideas p.s-no codes __________________ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- 1972 K10 4"lift 33"tires (soon to be bigger and better) 2000 silverado 1500 2wd 2"coil spacers3" BL 285/75/16's Last edited by mothertrucker424; 07-10-2008 at 08:01 PM.

07-11-2008, 08:44 AM	#2
bowtier Nobody rides free Join Date: May 2005 Location: PA Posts: 1,076	Re: stumble fuel filter or filters? My '01 was acting similar, not so much from a stop, but more accelerating pulling hills. turned out it had 2 gummed up filters. __________________ '71 C10 LWB 400SB/350TH '86 K2O LWB 350SB/400TH-6" tuff country lift, Shackle flip - plow truck '06 HHR - wifes wheels '01 Blazer - daily driver "It's better to burn out than it is to rust." -Neil Young

07-11-2008, 07:20 PM	#3
mothertrucker424 Registered User Join Date: Sep 2006 Location: st pete Posts: 404	Re: stumble also replaced fuel filter i will run a pressure test tomorrow __________________ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- 1972 K10 4"lift 33"tires (soon to be bigger and better) 2000 silverado 1500 2wd 2"coil spacers3" BL 285/75/16's

08-29-2008, 10:44 PM	#4
68C15 blood type; Retumbo Join Date: Jan 2004 Location: next to my reloading bench Posts: 10,269	Re: stumble did the pressure drop after you shut it off? (leaking regulator and/or plastic fuel lines inside the plenum)

09-01-2008, 05:43 PM	#5
mothertrucker424 Registered User Join Date: Sep 2006 Location: st pete Posts: 404	Re: stumble yes i replaced reg. and lines and scrubbed inside plenum (fixed awhile back sorry for not replying sooner) __________________ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- 1972 K10 4"lift 33"tires (soon to be bigger and better) 2000 silverado 1500 2wd 2"coil spacers3" BL 285/75/16's



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