Kenny ,outstanding diagnoses, so many techs go on the assumption that the vehicle runs it cant be fuel pressure . you went back to the basics and tested the fuel pressure and confirmed that the fuel pump is way out of spec , and you did not swap out any other parts . I am surprised the truck ran as good as it did with only half the fuel pressure ??????
I had the same problem with my daughters equinox. Pulled the codes and looked around, found the plastic fingers had broken off of the pcv hose. Replaced it, cleared codes and back on business.
A good tip he didn’t include because it doesn’t apply here is to see how fuel trims responds to throttle position. When both the short term and long term fuel trims are maxed out like in this case, this won’t help. But if the fuel trim comes back down with increasing throttle position, it’s most likely a vacuum leak because there’s less vacuum when the throttle is opened and the unmetered air is less of a problem, proportionally speaking, because the engine is pulling in much more metered air through the throttle. If the fuel trims increase with increasing throttle position, meaning the engine runs even more lean and calls for more fuel, it’s a fuel delivery problem or a dirty/faulty MAF. Either it’s asking for more fuel and the fuel delivery system simply can’t keep up, which makes the trims climb higher or the dirty MAF is allowing even more air into the system that isn’t being metered properly. Also, a good rule of thumb for the MAF reading, if you don’t have the specifications available, is that you want 1 gram/second of air at idle for every liter of displacement. A 3.8L should read at least 3.8grams/second on the MAF, generally. It should usually be somewhere in that ballpark. If the reading is lower than the displacement, it’s not necessarily bad or dirty because it’s just a rule of thumb, but it should at least be taken into consideration as a possible culprit. None of these are hard-and-fast rules, it’s just tips to help point you in the right direction.
I am also from NC in Asheboro. I enjoy your videos as I can learn a lot. I wish there were more mechanics that could diagnose problems. Every time I take a vehicle for repair. I’m asked “Did it throw a code?”
Kenny when that seat belt bell runs when you are setting in it with the key on just press down on the seat belt red plastic piece on the seat belt latch on you right side to to stop that darn bell from going off all the time learned that from my 2003 F 150 does it if door is open and key is on without the seat belt latched up they will do that 👍
The customer said there was a problem with the carburetor, and the fuel pump was bad? Irregardless of the fuel delivery mechanism, they were close to being right. Take the customers advice with a grain of salt, but you need to listen and consider nevertheless.
As a shop owner myself (38 years) I have an agreement with my accountant,I don’t do my taxes and he doesn’t work on his own car. Us old mechanics that started out with carburetors, points and condensers always start from step one when diagnosing a customer’s complaint. The 3 Cs Complaint, Cause and finally Correction and if you stick to this plan everyone is happy. One last thing there is No such word as Irregardless it’s simply Regardless. Look it up
Is the fuel filter connected properly, there should be an arrow on the filter that says the direction of flow? I've seen them installed backwards & cause low fuel pressure.
Ford had a TSB a whiles back regarding lean b1&2. Look at STFT b1&2, if they're high(lean) rev to 2-2500 rpm if they come down to normal range (close to 0+ or - 10) it's a vacuum leak. If they don't change or get worse it's a fuel issue. LTFT is an overall average so you may not see an immediate change. STFT is real time correction. Always check STFT first. 🙂
hey long term trims on ford take forever to change look at short term at idle and at 2500 the negitive at idle.... no vacuum leak it was lean higher up 17 psi yea drop tank time! maf sensors were a big thing but not here ahhh your in earnhardt neck of the woods was a big fan
Thats actually a good question 🤔. I believe I mentioned my own personal truck, an 06 4.3 Silverado that has a fuel pressure issue. I never bothered to actually check, but the darn thing really does well on fuel. Not sure what it actually gets vs what it's supposed to get
Yep and then if he changes what you said and the small chance you were wrong, you will say it was his fault. He said at the start of the video what the rule is regarding diagnosis, do that
If the MAF was bad , after cleaning , would it show low grams per second at WOT ? Or could that possibility be a restricted CAT ? This was definitely a bad fuel pump .
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Pump usually goes out after the cheap attempt of a fix. Really good informative videos thank you for the time you spend to make these videos.
Thank you sir !!
Blinker fluid ...it's always the Damm blinker fluid..😂🤣..great vid..again
I concur with your Diagnosis Dr Kenny…
Kenny ,outstanding diagnoses, so many techs go on the assumption that the vehicle runs it cant be fuel pressure . you went back to the basics and tested the fuel pressure and confirmed that the fuel pump is way out of spec , and you did not swap out any other parts . I am surprised the truck ran as good as it did with only half the fuel pressure ??????
Jumping to conclusions😂that’s my forte 😂 very seldom do I ever miss diagnosed twice!
Carburetor 🤦🏻♀️
Those Trident V8's always had that one spark plug next to the firewall that was difficult to get in and out.
I had the same problem with my daughters equinox. Pulled the codes and looked around, found the plastic fingers had broken off of the pcv hose. Replaced it, cleared codes and back on business.
Awesome fix !! Glad you found it !!
If it's easy to get to test port I always check fuel pressure first
down to earth, great mechanic ...great work, keep up the great jobs,......... wish for more like ya'.
A good tip he didn’t include because it doesn’t apply here is to see how fuel trims responds to throttle position. When both the short term and long term fuel trims are maxed out like in this case, this won’t help.
But if the fuel trim comes back down with increasing throttle position, it’s most likely a vacuum leak because there’s less vacuum when the throttle is opened and the unmetered air is less of a problem, proportionally speaking, because the engine is pulling in much more metered air through the throttle.
If the fuel trims increase with increasing throttle position, meaning the engine runs even more lean and calls for more fuel, it’s a fuel delivery problem or a dirty/faulty MAF. Either it’s asking for more fuel and the fuel delivery system simply can’t keep up, which makes the trims climb higher or the dirty MAF is allowing even more air into the system that isn’t being metered properly.
Also, a good rule of thumb for the MAF reading, if you don’t have the specifications available, is that you want 1 gram/second of air at idle for every liter of displacement. A 3.8L should read at least 3.8grams/second on the MAF, generally. It should usually be somewhere in that ballpark. If the reading is lower than the displacement, it’s not necessarily bad or dirty because it’s just a rule of thumb, but it should at least be taken into consideration as a possible culprit.
None of these are hard-and-fast rules, it’s just tips to help point you in the right direction.
A good mechanic must test to confirm the repair. In Canada the jobs are tuff most nuts and bolts are rusted bad.
I am also from NC in Asheboro. I enjoy your videos as I can learn a lot. I wish there were more mechanics that could diagnose problems. Every time I take a vehicle for repair. I’m asked “Did it throw a code?”
Auto zone brand brake parts cleaner leaves no film. I use it on antique clocks
Kenny when that seat belt bell runs when you are setting in it with the key on just press down on the seat belt red plastic piece on the seat belt latch on you right side to to stop that darn bell from going off all the time learned that from my 2003 F 150 does it if door is open and key is on without the seat belt latched up they will do that 👍
I got something out of it thank you for good videos.
The customer said there was a problem with the carburetor, and the fuel pump was bad? Irregardless of the fuel delivery mechanism, they were close to being right. Take the customers advice with a grain of salt, but you need to listen and consider nevertheless.
As a shop owner myself (38 years) I have an agreement with my accountant,I don’t do my taxes and he doesn’t work on his own car. Us old mechanics that started out with carburetors, points and condensers always start from step one when diagnosing a customer’s complaint. The 3 Cs Complaint, Cause and finally Correction and if you stick to this plan everyone is happy. One last thing there is No such word as Irregardless it’s simply Regardless. Look it up
Every. Time. I trust. Someone else's diagnosis...
I end up regretting it.
can the fuel filter be installed backwards and create a reduced flow rate?
Thank s.
Great job!
Nice video, looking at the lower control arm.
Is the fuel filter connected properly, there should be an arrow on the filter that says the direction of flow? I've seen them installed backwards & cause low fuel pressure.
Ford had a TSB a whiles back regarding lean b1&2. Look at STFT b1&2, if they're high(lean) rev to 2-2500 rpm if they come down to normal range (close to 0+ or - 10) it's a vacuum leak. If they don't change or get worse it's a fuel issue. LTFT is an overall average so you may not see an immediate change. STFT is real time correction. Always check STFT first. 🙂
hey long term trims on ford take forever to change look at short term at idle and at 2500 the negitive at idle.... no vacuum leak it was lean higher up 17 psi yea drop tank time! maf sensors were a big thing but not here ahhh your in earnhardt neck of the woods was a big fan
Yes, never go by what the customer states. Owner tows car in and claims, car just stopped. Turn ignition/start no fuel, put gas in, magic...
cut a hole in my 03 mustang spare tire well changed the fuel pump $12 and fuel filter $6 didnt want to drop the tank now i wont have to
Grasias
I have an agreement with my accountant, I don’t do my own taxes and he doesn’t work on his own car.
My truck is doing the exact same runs like crap when it warms up but i have no codes
Why was the temperature gauge at the warm position at start-up?
Them subscribtion scanners suck.
I know my 2 Cats are clogged on my 07 Dodge RAM 1500 5.7.....it has 272,000 miles on it.
If it runs kinda right, low pressure gives good mpg. No ?
Thats actually a good question 🤔. I believe I mentioned my own personal truck, an 06 4.3 Silverado that has a fuel pressure issue. I never bothered to actually check, but the darn thing really does well on fuel. Not sure what it actually gets vs what it's supposed to get
@@WrenchingWithKenny
Ł
Duh! 😅
How are you driving this truck? From the passenger seat?
Is it just me or does this look funny?
Wow a 10 mile test drive what did you do go tricking
Brake booster
Unless they report a ticking ... JK 🙃
LOL !!
Bad rear wheel bearing. I can tell you that! But you still will charge me to tell me what I just told you??? Lol
Yep and then if he changes what you said and the small chance you were wrong, you will say it was his fault. He said at the start of the video what the rule is regarding diagnosis, do that
If the MAF was bad , after cleaning , would it show low grams per second at WOT ? Or could that possibility be a restricted CAT ? This was definitely a bad fuel pump .