P0300 Misfire diagnosis and repair 2008 Chevrolet Suburban 5.3 

Good job. It be nice to you actually touch show of the removal and repair job. Some of us like me would like that step by step show and tell by example. Thank u for your video.

Ty, great video and very informative.

I have a 2009 Chevy tahoe I’m getting the p0300 which is a random mis fire I changed the spark plug heads and did a full tune up but the light came back on and flashes sometimes it drives smooth tho do you know what my problem might be dont want the check engine light on anymore

I had a misfire P 300 I change spark plugs and oil change clean air mass flow and still lights come on track stability and all that so my girlfriends that start with the gas tank and we change the cap and all our problems with white all the lights went out never came back on for days going strong and still no lights but my gas light tighten kept coming on in the past and I ignored it and it caused all kinds of problems mechanic said $900-$1700 to get the problem fixed $20 gas cap solved at all

Hi very informative video. Chevy Avalanche 2007 5.3L. I have multiple misfire codes and the only thing i did was to disconnect X2 connector on the ecm (for a knock sensor issue (high input) to check cable connectivity). Now connected back i am having these codes. Any suggestion on wiring check? Previously i had no issues.

Mr. B thank you so much for the excellent presentation study that you gave I would like to get information if you have any whether it be either way of educating myself further I would appreciate that

Thanks so much for this video on Chevy p0300. I have a 99 chev 5.7 liter and my engine and I have been at this for months. After watching your video and having heads that are only a year and bit old, I feel that this may be the cause and heads may need adjustments. If you have any other advice please reply. God bless

My 2010 Silverado has the 5.3 it runs rough, surges but the problem I can't figure out. If I have to accelerate quickly, it surges. About every 15 seconds or so. If I'm running 40 mph, it will rev and jerk forward. But if I shut the engine off and start again, it stops. I feel like this will tell me what the issue is.

I have a 2011 yukon with P0301 code, also showing service stabilitrak and service traction control. Changed the plug, wire, and coil on cylinder 1, still shows code P0301. Changed the rest of the spark plugs and wires, pcv valve (tubing), which was broke.. and no change. Do I need to have codes reset in the truck? Or bad injector? Bad crankshaft position sensor? I'm $300 into this issue already with no fix!

What would you recommend for an OBD reader

I've got a bunch of questions

could a bad brake booster check valve cause p0300?

P0300, rough idle after a minute or so, no check engine light on. Coil? How can I test the coils?

What does it mean if my ignition coil is sparking and making ticking sound.thnx.

Mark Rojas reporting

I need a lift

I have change everything and still a p0300

I’ve got a question I got a 2008 Chevy 5.3 we changed out we did a lifter job because we had a couple complex lifters come back. The engine was running fine ended up with a misfire changed a couple O2 sensors on bank one and bank two and we’re still having a misfire on cylinder 35 and seven changed injectors, got up another pick up and change the whole injector rail everything everything was the same replace them steel had a misfire on the same three cylinders we’ve done checked coil, pack, swap, cold packs. We got new new, spark, plug, wires, new spark plugs, and we still got that misfire on them three cylinders compression test compression all left bank is at 160 between 160 and 180 so are compression is good or can you give me an idea of what I need to go next?

Theme 5.3 or the worst engines I've ever seen.