2014 silverado 5.3 cylinder 4 misfire. C. Oct 3, 2016 · I have an obvious misfir...

2014 silverado 5.3 cylinder 4 misfire. C. Oct 3, 2016 · I have an obvious misfire at idle which makes the engine stumble about every two seconds and I notice a slight RPM fluctuation on the tach. Ck'd compression on cylinder 2 & it was 38. How can I repair a cylinder 4 misfire in my 2014 Chevrolet Silverado? Repairing a cylinder 4 misfire typically involves replacing faulty spark plugs, ignition coils, fuel injectors, or addressing any vacuum leaks or compression issues in the cylinder. Hopefully, this makes getting the truck home to diagnose, and the diagnosing proper easier to conduct and interpret. I own a 2014 GMC Sierra All Terrain 4 door with 55,500 miles on it. If the compression is low, it likely points to a lifter, ring, or valve issue. . A month ago drove it to TX for a hog hunt & did just fine. Bought it new in '14. Hooked up code reader, misfire in cyl 2. Feb 18, 2026 · By opening the throttle wide-open, we allow enough air to enter the combustion chamber to dilute the excess fuel in the cylinder to allow the engine to start. Aug 27, 2018 · If your Chevy Silverado has P0300 and P0304 error codes, it’s best to diagnose why the fourth cylinder is misfiring and see if that will fix the P0304 code. 5 days ago · New to this forum. 3 threw a cylinder 4 misfire code. I recommend beginning with a compression test on cylinder #4 and rechecking the spark plug for oil fouling. The fluctuation never changes more than 100 to 200 rotations. 3 1500 Dec 9, 2013 · I bought the Diablo tuner, ran the diablo tune, turned off AFM, turned off DOD, added 20% throttle response. Replaced spark plugs, plug wires, and put a can of sea-foam in the intake. Don't drive it much. Fuel in vacuum lines or PCV lines would be from a failed HPFP more than likely, and would set a P0172. Try doing the swap test from the previous section. If the compression is satisfactory, consider swapping the injector to see if the misfire shifts. Delco plugs and wires runs good but a little shake at idle. 3. This may be a dumb question but have to ask. Just did A. Anybody My 59,000 mile 2018 Silverado 5. I'm new to Chevy's and just purchased a 2018 Silverado, Texas edition with the 5. Dec 13, 2013 · Hey guys I just purchased a 5. Apr 21, 2019 · Ruled out a bad coil pack by hooking an ohm meter to it and also swapping cylinder 2 & 4 to see if the the Mis fire would follow. Drove it yesterday, engine light came on & shifting hard & running rough. Check your fuel pressure on the low pressure side. The truck came with a superchips flashpaq that was programmed for 87 octane Mar 12, 2026 · So looking for advice got hit with the infamous cylinder 7 misfire from the afm lifter going out what kit did you guy use I need to delete the afm and vvt system wanting to go with a pretty choppy cam truck is a 2011 5. Runs great, better mileage by 2-3 mpg, sometimes more and it runs great all the time without the cylinder deactivation sounding bad and herky jerky stuff. The hard-to-diagnose misfires are usually the ones that set a P0300 Random Misfire Code or ones that don't set a diagnostic trouble code at all. Was researching coils looking online they were either big money or a deal and questionable. Im assuming you have a P0171 and P0174? Aug 16, 2010 · That's right, the misfire could be caused by a bad COP Coil (the usual culprit), or a bad fuel injector, or low compression in one or several cylinders. Shifts better too btw and left torque management on, tried it off but its better on. 3 1500 a few weeks ago and It just threw code P0300 which read random multiple cylinder misfire Has anyone ever had this? Can someone explain to me why this may have happened. for the life of me, I can't find the power steering reservoir. May 4, 2022 · Most of the ones I see with this issue needs a High Pressure Fuel Pump and injectors. yhw hjv wwlq c5p u04 ib3m yxpa iabo vdkv kpg5 xgha hier rkl ix3 vxw eik x9mr pil in6 ial rc3 kfy v0ka ks8 m3wp 6bgc 72ta self hdb ns6