Questions & Answers for: fuel injector 2003 engine trailblazer

...fuel injector cleaner help. Tim it would not be the ignition coil....injector cleaner could help it, most people add it to the gas to help maintain clean injectors and you should do the same. as far ...

...fuel injector cleaner in it the light goes out It seems like the gas, but the more likely causes could either be a gas tank cap not sealing, and or the O2 sensor needs cleaned or replaced. There is ...

2003 chevy trailblazer!!!! If you know your tunup is it to date I would go buy some chevron supreme and add the techron fuel system cleaner to the fuel and do this for a couple tanks. I'm assuming you

...side. It may be caused by a fuel injector not closing fully. Dirt particles can do this. Adding Gum out may help. The other engine codes, 306 and 340 is for missfire which the cam sensor is at ...

...fuel pressure and dirty injectors or injector control use a quality injector cleaner for a few tankfills Double check and triple check the coil is snapped onto the sparkplug on the I6 engine. Very ...

2003 trailblazer won't start the engine cranks but won't start Someone will need to determine if you are lacking fuel to the injectors or spark to the plugs to proceed.

fuel filter for the 8 cyl engine so I assume there is one for the 6 cyl too. Around 2004 or 2005 GM stopped using replaceable filters. I would start with replacing the filter and running a few cans of

...engine light on? if not, then start trouble shooting the fuel system from the tank to the injectors. The other issue would be electrical. check battery connections from the battery to the starter to ...

...2003 trailblazer with 4.2 engine. Losing power when driving especially when going up hill (even small hill). Will drop down to 15 mph. got a code of p0172. Replaced O2 sensor and the thermostat, but ...

...injector to open and let fuel into the engine. to check the injector pulse..... Any idea on the issue. RPM stay the same when it idles rough. 4.2l v6 ... 4.2L Inline 6 Cylinder 4200 Engine Sensor ...