Jan 6, 2017 · Back in the summer it started missing and threw the check engine light. I got it checked, had a cylinder one misfire. And threw two codes for the fuel rail pressure. I ran some sea foam through the gas tank and added a new spark …

Nov 3, 2023 · More recently a new tapping/ticking type sound started, along with rough idle/engine vibration/poor acceleration. I used my code scanner and saw that there were high counts of misfires on cylinder #3, but it hadn’t thrown a check engine light or anything like that.

3 days ago · 2004 Sierra 3500 dually, 6.0L extended cab, cab&chassis flatbed, upgraded to 4wd 2012 Silverado 3500 dually, 6.0l, crew cab, long box replaced w flatbed

Chevy 5.3 misfire only at idle is an issue that affects the engine of Chevrolet vehicles with a 5.3-litre displacement. It is caused by a lack of fuel or spark during engine idling, resulting in the cylinders not firing properly and creating a misfiring sound or rough idle.

Jul 7, 2023 · Monday driving home/literally pulling into driveway CEL starts flashing. (2021 GMC Sierra 5.3L v8) No noticeable change in engine performance or any kind of rough idling/running. Turned off truck, restarted it, and then the CEL stayed lit. Took it to dealership to get checked out.

Jun 24, 2019 · When the motor flares up in idle or the O2 readings go to rich (.600 and higher) and stay there for a few seconds, … there is your vacuum leak.

Feb 26, 2011 · I've got a 99 gmc sierra with the 5.3, 130,000 miles. The engine idles a little rough and the cel is on. The obd2 code showed a misfire in the #4 cylinder (P0304). So far I've replaced all the plugs, plug wires, new fuel filter, and new coil pack and injector in the number 4 cylinder.

Dec 31, 2014 · check that the injector is getting a pulse on #8, what did the old #8 plug look like compared to the others? Did you replace the high pressure fuel lines? I heard they were ONE TIME USE only.

Jan 10, 2016 · Hello, ive got a 2000 z71 with 138k miles 5.3l thats been well maintained and driven easy, yesterday it was wet and raining out, iddrobe the truck about an...

About this chapter: Chapter 53 regulates the storage, use and handling of all flammable and nonflammable compressed gases, such as those that are used in medical facilities, air separation plants, industrial plants, agricultural equipment and similar occupancies.