Dear Ratchets, I honestly don't know what I'd be doing with my car if it wasn't for you. You've helped me so much over the last 5-10 years, your videos are always comprehensive; understandable and often funny. I've undertaken many DIY car repairs confidentially and successfully thanks to you, including but not limited to, spray-painting (re-clearing; blending; sanding/polishing and so on). Thanks so much , keep up the amazing work, we all appreciate you more than words could ever describe!
Most other channels just blame the lean mixture or the low octane fuel but you've done a great job putting together a comprehensive list of causes that contribute to engine knocking.
This video was super informational and explained in very easy to understand and terms! Thank you for explaining so comprehensively what can cause engine knock, I feel much more confident going into the mechanic now instead of just driving up and saying 'there is a concerning noise, fix it!'
The fellow doing these videos is magnificent. I believe I've learned more, via an easier fashion, regarding engines from him than from anyone else. That's not to say that there aren't a lot of good fellows on the innerweb putting out good stuff, I mean to say that this fellow is just that much better. Great presentation! Thank you so much for teaching me stuff for free!
Thank you for uploading this video it's the most comprehensive coverage on what could cause a P0325 code available on RU-vid. I recently had my head gasket replaced on my 2005 honda civic lx special edition. Three days after getting it back I'm getting a P0325 code thanks to you I at least have some steps to take before I spen a ton more money.
Great video. It explain and or answered my questions. I've looked for videos about knocking and couldn't find any explaining or showing or even detailing it to me like this. Great video.
Thanks for the video. I add a couple bottles of Gumout with PEA to my vehicles gasoline occasionally to help clean up the intake valves and combustion chamber. I also use it in my old carbed motorcycles and it does a good job helping to keep the carbs from plugging up. I also use it in the gas of my 2 stroke FI boat motor where it solved an engine miss. I also mix some with the gas in all of my gas powered lawn tools to keep the carbs clean. Chevron Techron does a good job too I've heard.
<a href="#" class="seekto" data-time="324">5:24</a> "it Donald Trump's the ignition timing". I had to play this 3 times to make sure I heard it right!😆😆😆
Strange thing about running a lean condition is, it ends up using more fuel. You'd think if it's running lean it'd be less, however you end up mashing the throttle open more to compensate for the lack of power and in turn makes it use more fuel.
Thanks my mechanic.My Toyota Hiace 1rz engine had this problem recently and was fixed by correcting the ignition timing.The distributor was over advanced.thanks good video.
I think I heard you say that decreasing the timing BTDC will increase the chance of spark knock giving the example of it changing from 30 degrees BTDC to 15 degrees BTDC increasing the odds of having spark knock. You got that backwards. I love your videos man! I look forward to each and every one of them!
That was a nice video to watch, and I knew about some of the problems one could find in the vehicles, but didn't know about the EGR system, and have to do further checking on that. Thanks for sharing this information with us.
God bless u always. U just confirmed y my car has the problems it have. Thank u very much for putting videos like this that a 10 years old can fallows ur teachings. Thank u very much 🙏💯💪
Dude you are the Best. Excellent teaching. Now i have a more detailed idea about what to check in my car that is knocking. I realiza i never change the spark plugs. Easy solution. Thanks
I got a 2013 Chevrolet impala and with direct injection i had a pinging noise when i accelerated, i added that Berryman B-12 AND it really helped that pinging. I assume i had carbon build up . Very interesting video 👍
This is one of the best ten min. video. Good explanation and good snack while you watching. You know, about timming belt and the bored dog. Hahaha. I really enjoyed this video.
This video is fantastic. Watch and learn all the stuff from Ratchets and Wrenches channel and you'll be a damn good mechanic, or at least you'll able to work on your own car. The best quality explanations on the subject. I really need to get that scanner. ;p
thank you for very informative video! I have kind a knocking sound on my golf mk 3 gti above 4000 rpm when accelerating to highway and have huge powerloss.
Thanks for the video! Based on what I understand here with my Toyota v6 I'm going to simply try higher octane fuel as a 'dumb' diagnostic to see if it helps. Of course this doesn't fix the problem, but gives me some time before I have to worry about fixing it. Then I'll probably do some Seafoam, easy to do and not a whole lot of effort (possibly will clean out carbon.) Then after I've wasted my time and gas money on that I'll go after the real problem which I'll bet is probably EGR, spark plugs, or lean fuel.
Love your videos! That scanner definitely is not for the everyday joe 😂 Expensive!! That’s what ya need to do all the mechanics stuff though. The cheap ones will not do all the stuff this one will.
Would be great if all engine knock problems were as simple as old plugs. Good list of possible causes. For the purpose of evaluating fuel trims for rich or lean condition, it should be check at varied engine speeds and loads. I recently switched from 87 octane in my Ecotec, GDI engine to 91 Octane, Top Tier fuel and it significantly reduced my positive long term fuel trims. Before it would run nearly 10 percent, but now it is 2-3, with STFT fluctuating between -2 and + 2. This is consistent through all engine loads.
Thank you!!! I have a '06 Mazda B3000 which has similar knocking issues. I'll replace the sparkplugs first. The previous owner/friend says it's never been done.
dude , do u have answer for my question. does the pcm use the 2nd O2 sensor (after cat) data to control the mixture. I heard some ppl say it depends on the car manufacturer. I live in place where there is no emission control test. obviously why I'm asking coz I need to remove the cat converter and my only concern is the mixture. I hope u have an answer
All the negatives or thumbs down are from non-tech / techs, looking at how to repair a ranger in their bay, and mad that you are giving techy secrets out lol... They can't make money on this repair now because you perfectly explained how to repair it.... 🙂👍 Whos the man....Youdaman
I know this is unrelated, but i would like to see a video on scan tool values. What i mean is, pretty much the "ballpark figures" for normal readings AND what the numbers mean. I'm pretty much a beginning mechanic (in school at the moment) and a video of that sort would be incredibly useful. I think it would have to be one of your longer videos, since theres so much to cover, but every car nowadays needs a scan tool... so theres a lot of value in understanding how to "read" a scanner. Thanks in advance :D
😂😂😂😂😂 "it DONALD TRUMPS......" I seriously had to replay this multiple times just to make sure my ears were not deceiving me!!! Who else turned on Captions because of that?
😂YES! I definitely replayed it seven times or more times! and then turned on the captions and he definitely says Donald Trump's and the captions say it too!?! What is he trying to say? Or is he literally making a joke cuz I'm trying to learn lol And I don't think Donald Trump had anything to do with the engine knocking or not 😂🤷♂️
Thanks for the information. Just replaced old carb with new holly for 69 fairlane and had issues with gauging rpm, I don't have rpm gauge, engine was reving high, now under control but noticed knocking sound.
@ratchets and wrenches hey man i have the same engine on my 04 Ranger and it has a loud knocking sound on the engine but it come from the bottom...im about to replace the block but im trying to look for a new engine that will fit instead of the 3.0L. what block can i swap?
i have a jeep 4.0 that had the bosh platinum plug in it (wrong kind of plug). it was getting almost 10mpg (should b getting 18-20). when i put the correct plug in, it ran better and brought the mpg up to what it should be. but then the slight tick turned into a knock :( ... could changing the spark plug to the correct spark plug (after running the wrong plugs for years) cause a spark knock ? i am thinking that i have a broken piston or piston skirt :(
Good diagnosis and remedy. Too bad you can't cook. But someday I can teach you. But I'm busy inventing a 20ft pry bar to remove the balancer off a Honda accord.
My 2002 ZR2 has this issue right now. I have the acdelco spark plugs but spark wires are from auto zone. Would the spark wires be creating the knocking?
I have an 04 Tacoma V6 that throws knock sensor codes. I replaced the knock sensors and plugs and made sure to use the recommended dual lead plugs. I later noticed the knock sensors would trip while I was driving on the highway and the engine would slow to 2000 to 2500 rpm. I ran regular fuel. I never open the cylinders up to look for carbon buildup. Never did a compression test. Do you think I could have bad seals or a leak in the intake system causing a lean mix? The sensors tripping when I would be in that rpm range is confusing me
I have a 97 Toyota Camry 132k miles with a P0325 code for Knock Sensor, and it seems to be knocking upon start up and beginning of 1st gear. You think just changing the sensor could clear up the issue?
I have been wanting to replace my spark plugs for a long time but I haven't, after watching this video I ordered my spark plugs and I will be changing them tomorrow.
what should my ignition advance be at idle? My car will run anywhere from -2 to 5 at idle and when cruising at highway speeds it is around 25 to 35. Does this seem right. it is a 2.0l I-4 motor
Subbed' because your video was extremely informative and assisted me with furthering my diagnostic on my car.. which is my Lifters (Y_Y).... 07 Mustang GT 4.6 if you ever have a video on replacing those.. that would be glorious lol. Thank you for the information I can read my Data Logs on my SCT X4 Tuner
I have an 05 GMC Yukon that started doing really hard downshifts after I had the rear main seal replaced. Not sure exactly what's going on, I checked the transmission fluid level after I got it back and it looked a little high. It's generally ok if I take it easy so I've been putting it off for other jobs (like the front end it needs). Today I was going home trying to pass some jerk on the road and it did a really hard downshift, my rpms jumped from like 2k to 5,500 and I heard a really weird rattle as the rpms jumped, I'm not exactly sure what bad pre-ignition or detonation sounds like but it definitely sounded bad enough for it. I don't think there was any catastrophic damage, just wondering what the hell that noise was and if it was pinging or one of the other two how much damage a single event like that would cause in general. This thing is pretty old and I need it to make it to my next vehicle. I generally don't try to dog the thing but sometimes it just happens.
