7.3 Powerstroke Bad Injector testing - going through the motions of finding a bad injector 

Great video brother! Nice to see someone identify, isolate, then eliminate the issue!

I like the way you explain and show everything we need to do by far the best I’ve seen so far.now I have to go to work. You make it simpler. Thanks

I have a 7.3 with 380k. Watched and used quite a few vids on upkeep of my truck. Really appreciated your postings. They are in-depth for day to day drivers of 7.3's. Thanks

Love that you broke down the wiring harness for us. Most of the videos you see they are using scan tools that 99% of people don’t have

You made my day man. I had the exact same scenario, went thru the same troubleshooting you did and had the same results. Watched hours of video trying to figure out what was happening. Saw your video 2 nights ago, got a temperature gun yesterday after work, found #5 running way hotter than the rest, replaced it and no more smoke. Thank you for posting that video.

I am a pretty new 7.3 diesel owner and I ran across this video and And I like the way that you showed everything and explain everything because I'm just trying to learn about dieselI worked on multiple gas engines but it's not quite the same for diagnosing and everything so I really appreciate the video needed a great job thank you

Thanks for this good video. While I'm not experiencing this problem it was very informative and helps take some of the mystery out of diagnosing this type of problem

Having that exact issue with my 2000, I thought it was the head gasket, I'll break out the temp gun and see which one is giving me trouble.... Thank you for the time and showing the process...

Great explanation on the harness leads! Great diagnostic method!

Great job!! Isolating the culprit!! If it don't clatter it don't matter!!!

This was a great video, I’ve got a 7.3 with the same symptoms and same conditions of the fluids. Going to test out the harness connections and then likely buy a heat gun lol

Awesome video!! Great info thank you!

Great narrative! Appreciate the video, very helpful! Thanks👍

This is a very helpful video, thank you.

Brother found your channel by accident my 450 is doing this !GREAT VIDEO JUST SUBSCRIBED TO YOUR CHANNEL ! THANKS AGAIN FOR YOUR VIDEO !

nice and simple explanation bryan many thanks

Really helpful video. Thanks

excellent troubleshooting bryan

Thank you so much for this awesome video!! You definitely helped me resolve my issues. 🙏👍🏼

very helpful.👍👍 Thanks for a great video

Great video Bud! You explain it well!

Really shows you have to think outside the box sometimes…and keeping it stupid simple seems to always ring through. Funny how those things happen. I could really tell this wasn’t the best timing for you yet you pushed thru….determination is what makes a good mechanic to a great one. Thank you for sharing your experiences

thank you so much. i really liked your video, very detailed. keep up the good work and hope your personal issues you were having in 2021 got better. i can relate to that. again thank you! i found it very educational.

Enjoyed the video .

Good job. Doesn't it drive you nuts that the bad injector didn't fail the contribution test. I had a similar problem, black smoke, no power, couldn't get over 1600 hpop psi. Lucky for me the cylinder that failed the contribution test was the bad injector (buzz test sounded off on that cyl too). Changed all the o rings on that side and put in an old injector for now. Smoke is gone, psi & power is back. I suspect it was stuck open. Next time I'll also check the injector tip for cracks. Interesting that you had black then white smoke.

I know its been awhile since you made this video but I saw what is possibly happening with by Ford OBS. The knocking sounds just like mine but I still have the mechanical fuel pump. I need to replace that first before I go on with the injector probelm. Great video.

Great video very helpful.

Nice video bro..thanks for all the info man..

Thank you good info.

The best video I've seen on how to diagnose a cracked and white smoke injector problem. Thanks for the great video! PS Time index 9:48 white smoke, "Sorry Greta" that's funny! Best Wishes & Blessings. Keith Noneya

Great info. Thanks for the video. Worth a sub for sure.

Great video I have a somewhat similar problem. I’m getting white smoke just like you. I’m goin to try the heat gun test and go from there thanks. I also have oil and coolant coming out of my exhaust which I’m lost but am trying to figure it out. Thanks again

Thanks bro

Sorry Greta!! OMG that cracked me up!!! 😅

Thank you I just found u and I’m going to get my temp gun and check mine cause it’s white smoke

Good video bud. I just did my injectors, harnesses, glow plugs, gaskets. Went with full force 180cc single shot. Also had to install a hydra chip. So once i got the air all out of the system, it started up great. However, now it will smoke and miss lightly on start up. It will not clear up on a warm up. But it does clear up after driving a mile or so. I did not do cups. My oil and antifreeze are both clean. Buzz tests was also good.

I have the same issue. Probably gonna just go Alliant and get all new injectors. Maybe stage 1

How is the best way to check the IDM to be bad i have a 97 7.3 and now my truck is like running on 4 cyl no check engine light no codes passes a buzz test. Thanks for any info.

Hey so glad I found this, having the exact same problem. So when temp gunning the manifolds you wanna replace the injector with the hottest temps?

Thanks had the same issue sounds like.

Hey thanks for great explanation on your video, hopefully you can help me. Im thinking of buying a 2008 f450 6.4 in California and it would be my first diesel truck. The person thats selling it says it has a bad injector and its smoking and knocking as soon it drives a couple of blocks from over fueling. My question is if there is a way to cancel that injector just to be able to drive it back to yuma az like 250 mile distance. Thanks ahead

I have alot of white smoke coming from my 7.3 just stater few days ago . My main issue or focus has been on the oil leaks first and foremost it was leaking from the hpop bolt access cover and the oil pump its self took care or that with new oil.pump and new gasket and cover for the hpop cover . Now the only other leak I have to address is the oil pan gasket it's pours out of there smh. So once I fixed those leaks and was left with just the oil pan leak I still had to get him I started driven home and at a red light it just went to letting out insane amount of smoke I thought for a sec it was on fire people riden by thought the same and honked to get my attention as if I didn't see the massive cloud of smoke coming out my exhaust. Thought maybe the oil was getting on the exhaust and burning off but wasn't the case . I will be attacking the oil pan leak tomorrow since it's the one that requires more time and more urgency. But once I finally get the oil leak issue all solved and it's no longer leaking where do I begin the hunt or the elimination process on addressing the white smoke problem. Sorry for the long comment on your video man but it's the only video I seen that seemed close to my same issue and I'm outta options and ideas on what to do with this 7.3 almost Want to give up and sell it or something any help be TREMENDOUSLY APPRECIATED

The bes plain Yo entiendo el inglés pero lo explico poco La mejor demostración de mecánica me la han dado ustedes Bendiciones y créanme Mecanico como ustedes Hay que quitarse el sombrero Yo soy mecánico hace 40 años Estudiado en Cuba Pero en este país jamás había tenido una escuela como la de ustedes Los mejores Mi nombre es Carlos mato

Great video man your way to explain is perfect.. I’m a put everything to practice. On my 97 7.3 My issue is that cylinder no. 2 after a couple of minutes is not heating like the rest. The other 7 range between 130-145ish but number 2 was around 86. I just started my truck a few days ago after putting a high volume hpop, 180/30 injectors, new valve cover gaskets and a new main wire harness. Oh and did fuel bowl delete and went with an electric fuel pump.. and the main issue that I was attempting to fix by doing all this is that when I first start the truck it idles really rough (sounds like a gas drag car) for like 30 seconds then it evens out. I disconnect the ICP sensor then start it and it starts normal (no rough idle) so I’ve already tried 2 new icp sensors thinking it was that and it still does the same thing.. both sensors were from O’Reillys not motorcraft you think it might be that they were both defective? Or in your experience what else could be causing that? Thanks

Thank you to this info. Dumb question: How are you cleaning the valve cover wiring harness connector? Wipe off oil and compressed air? Any other methods? I’m trying to solve a P1271 code for cylinder #1.

Get some diesel lubricant and fill the fuel bowl up. Start and run it hard. Shut off and repeat and keep doing it and it may fix it. We’ve done it several times and fixed injectors. Also get 2 quarts of stiction eliminator made by HotShots and do the oil and replace 2 qts of oils with the stiction eliminator. Also fill your tank and dump a ton of diesel lube additive in it. Put enough that it makes you feel uncomfortable and then put more 👍

I did full force injectors and have a slight miss no smoke no hesitation starts right up jus put 100 miles on it has some minimal knock not loud at all comes and goes new icp new valve cover harness and new motor harness new glow plugs

Have you had one that will start an shut off an it's smoking bad knocking but I can't use the heat gun on it cuz it shuts off by the time I get out there . Any help would be greT

Alliant injectors are the best. For 7.3 or6.0.

I have a 2000 f-250 with a 7.3 That blows white smoke for about a minute after I start it only a cold start after doing some research I think it may be a bad glow plug Do you have any advice for me By the way I've owned 2 of these trucks now and Both of them had the 1st truck I Hadid it but stopped after 2 months and when I went to sell it the guy Went to start it up and it started doing it again The longer the truck sits the more it will smoke The 1st truck I had had 330000 miles but My new truck only has 260000 miles What is doing this

Hey buddy i have 1 injector not firing. It’s #3. I swapped out the injector with a rebuilt injector I have and still no fire. Passes the buzz test. Im lost on what to do next. Truck ran great before I upgraded my injectors a year ago. I put a brand new wiring harness in it and new valve cover gaskets. Replaced all the sensors with motor craft. Upgrade to the E-fuel kit. New injector cups. Im at a loss and on the verge of giving up after all this money I’ve put in it

I need some pointers on a recently purchased 7.3 of mine.. got the truck with rough idle and loss of power, ive ran through the fuel system front to back, i did away with the 2 "filter" cups in the tank since there is a filter up front, replaced the inline fuel pump on drivers side frame rail, checked fuel bowl under the hood, replaced filter, and still.. rough idle, no power... hooked my buddys matco scanner to it, and got a code for "no connection with pcm - IDM.... is it a bad IDM? Again, truck runs, but doesnt run well... there is zero smoke from exhaust, and little to no blow by from oil cap and i figured the little blow by is probably due to the misfire.

Awesome Video, how may we get a hold of you for questions?

I don't understand what the thermal gun does by looking at the exhaust pipes. If I understand your video the hot cylinder was the bad one. Why was that exhaust pipe so hot if it was not firing? What am I missing? Also, if a person can't find a piggyback jumper like you had they could always go directly to the connector on the valve cover and carefully touch the pins of the connector since they are male spades on the valve cover. Thanks for letting me know the power line is the middle line and the other four are the grounds from the IDM. I use AllData and could not figure that out after looking at their electrical diagrams.

Hi. Am confuss? On. Papper. You said red. On. Common. To check injectors. But But. On video. You. Put black. On. Common. ????????????? Awsome video.... This my seco d o e i wat h on you. . you got goos. Stuff..

i have the knock on #8 but my cylinder temps are 86-100 F on my driver side passenger is 83F

i have 02 i yes got the same problem 😂

My truck running terrible shaking blowing smoke smells real bad

Injector o rings

On mine, driver side is all around 320 degrees f, but passenger side is all around 150 degrees f. But I don’t have hardly any smoke. Any ideas on what could be wrong?

Wht state are u n

#Roger

Don't buy anything autozone to replace oem parts.

did you ever figure out why your injector failed so quickly?

Can you say cylinder wash!!!!!!!!!!!!!!!!!!!!!

18th……😀😀😀😀

Oil cooler is bad injector cups push diesel in radiator