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SES Light is On!! P0300 [Archive] - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum

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Nova
07-13-2007, 02:44 AM
I brought my tb to the garage they plugged it in and said that this was the code P0300. I had changed the spark plugs #1 was black and oocky and fuel filter was full of crude. I took the engine down to the injectors blew them out 2 of them kind of blurp out and the rest sprayed. What do you think?? :confused:

pogbobo
07-13-2007, 08:18 AM
looks like a misfire ... since you cant search until 10 posts I searched for ya :) here are some links that might help:

http://forums.trailvoy.com/showthread.php?t=14604&highlight=P0300

http://forums.trailvoy.com/showthread.php?t=26081&highlight=P0300

http://forums.trailvoy.com/showthread.php?t=23194&highlight=P0300

hope it helps some ... I'm sure that someone who knows what they are talkin about will post soon :yes::rotfl:
edit: I was right! Mike will p0wn those DTCs :rotfl:

oh and welcome to the forum!

PROSPHOTO
07-13-2007, 09:43 AM
Did you get all of the injectors clean?

I would run some fuel system cleaner through your truck and make the switch (today) to a Top Tier Gasoline (click here for the list of retailers) (http://www.toptiergas.com/retailers.html)