Great video...i came looking for how bad injectors can ruin fuel economy. I have an '06 Honda Element that gets absolutely terrible gas mileage. Gonna order a set of injectors now. Thanks!!
My swift diesel 2011 ddis clocked 106000 is producing black smoke while accelerating, turbo is ok and there is not any oil consumption. Egr and intercooler cleaned at 80k, catalytic converter cleaned at 90k. No problems with Cold starts and the acceleration is great.Mileage 17.6 in city and around 20 on highways.Can't diagnose the problem.
If the chain is too loose you get starting issues, chain sounds etc...It's should be the egr or sensors I guess....clean them properly..maf should be cleaned by removing the plastic guards and steel filter inside.
Might be worth having a compression test done. Also might be a good idea to have the operating pressure and spray pattern checked on the injectors. I worked in a factory designing and testing diesel injectors for 11 years.
Thanks for that helpful video! Do you have a video where you make this setup, how to set all this to check my diesel injectors, because I think I have an issue
Apologies my friend for the late reply. I dont have the setup..but a 6mm rupper pipe cut to fit inside the leak off port and inserting the syringe body would do the job.
Did you only replace the injector no. 4? Seen people claiming you should replace all 4 because if 1 or 2 are bad others are also worn. But it can clearly be seen that only no.4 is looking bad in this test.
To goes back to fuel tank but thats not the issue...here, when the engine gets hot, it takes too much crank time to start up...sometimes it wont start.
@TomSon-ej3pw Nop...rail pressure get released when the engine is turned off. And when you try to start the engine, rail takes time to get pressurised to optimum as a small amount of fuel leaks pass the injector leak off port and when the rail gets fuel pressure by excess cranking, injector starts to fire up. With a small leak from injector and excess leak off, fuel pressure in the rail goes down and the car wont fire up. This goes on. At certain point, rail gets stable pressure to fire up the engine.
@@dailyhandsdiy In other words leaking injector delays (or even prevents) time to build up the correct pressure to start? Does it matter if the leak is internal (e.g. stuck nozzle) or external (the overflow excess)?
Hei. Can you give me right answer? I have one insignia 2.0diesel. No smoke, but shaking when i push gaspedal. New: diesel filter, air filter, oil, coolant water cleaned air flow sensors. New timing belt, water pump and something other things. No fault code. When i go up to 3000rpm shaking gone and looks like give enough diesel. Goes without any problem after. Stop the car and shaking again with accelerating. And then is gone around 3000rpm. And to the next start goes easy. Maybe one injector is bad? 261.000km in car.
Engine shake or wiggle is a result of misfire...mostly...in diesel..injector is the only one thing that cause misfire unless there's some serious decompression in any one cylinder.
@@dailyhandsdiy pressure sensor in common rail? Or pressure valve? Because if its go up to 3000rpm fail is gone and car goes like a rocket. Until i stop and start again.
@cheeba4069 rail pressure sensor shows intermittent stalling and check engine light in most cases, drv same, any leak or closed drv gives a rail pressure related code...Could check the rail characteristics using a scanner.
I am here late, I hope I'd get an answear. I have kinda the same problem but on a renault so I think the forth one is the one all the way to the left(next to the timing chain) That one is filling up but the other took some untill they started filling and after that they were also filling slower. The problem I have is really BAD black smoke when accelerating hard and I think the problem would be the other 3 because instead of leading back to the tank the fuel gets sent in the cylinder and is more diesel in the mix than needed. In that case the other 3 are faulty. I don't know in your case because they seem to fill in sync. What do you think? Did you solved the problem?
Here the problem was excessive cranking before start...it takes around 8 to 10 seconds to start and when hot, fails to start. the one with too much leak off was worn inside and leaks fuel back to return pipe causing delayed pressurising the rail. In your case, a black smoke can be seen if the turbo is malfunctioning, sensors malfunctioning, turbo boost leaks, egr sticking etc....
Hi. Just done the test on mercedes viano and unsure what the results mean. 2 filled level and 2 didnt fill at all after 30 seconds. The engine was lumpy as hell, and the engine shut off and was unable to restart the test. Was fine once i put return pioe back on.
Vehicles with precise fuel metering, shuts off if there's a leak in fuel return or delivery. Fuel leak off should be minimal. If there's excess or like too much, need an expert diagnose.
This doesn't mean any condition. Its excessive leak off from that injector. certain amount of fuel comes out injector from its working. It shoud be under certain limit...if its above the limit, you will get long cranking before start as hp pump has to work long to make fuel pressure.
isnt 4th one stay closed? while the other 3 work properly? because if it was stuck on open, there would be less comong back overflow line, but now 4th one has most overflow in return line indicating its not using fuel like other 3 injectors, meaning stays closed
Hi you need a syringe and 6mm dia hose mainly used for wiper washer. cut them accordingly to fit inside leak off port. Remove the clip and connected pipe from leak off port and seal the end pipe so fuel won't leak. press in the cut out 6mm pipe and followed by the syringe. set up is completed.
If you mean oil consumption..then no injectors won't cause oil consumption. And the dpf can get clogged if the injector malfunctions. Also if the oil burning inside the cylinder is high, dpf clogs fast.
If diesel leaks to the cylinder too, it goes thru pistonrings to the oilpan.. When you check oil level, you can smell if there diesel too.. Diesel can leak from injector seals to oil reservoir too.
after change the injector you have to programming, on every injector there is number on every injector and after changing you have to put that number in side ECU, but if you are doing french car you have to be cearful, on french car they cound cylinder form clutch side, on normal car is 1-2-3-4-gearbox, on french is 4-3-2-1-gearbox
Yes exactly, when cold, the fuel will be denser and with bad injectors especially with bad or clogged nozzle, fuel get restricted to be sprayed at proper quantity. And when it becomes hot, fuel get thinner thus escapes the restriction and gets a better spray pattern. the engine smooths out. Same happens if the injector solenoid becomes weak. Cold and failing solenoid will be weak and when it becomes hot works better.
Thats easy, get 4, 60ml injection case, remove the leak off port, insert a bike fuel hose cut into case, insert it into the leak off, close the return line of fuel. start and see.
Great video...i came looking for how bad injectors can ruin fuel economy. I have an '06 Honda Element that gets absolutely terrible gas mileage. Gonna order a set of injectors now. Thanks!!
My swift diesel 2011 ddis clocked 106000 is producing black smoke while accelerating, turbo is ok and there is not any oil consumption. Egr and intercooler cleaned at 80k, catalytic converter cleaned at 90k. No problems with Cold starts and the acceleration is great.Mileage 17.6 in city and around 20 on highways.Can't diagnose the problem.
black smoke is mainly due to egr or dirty air intake sensors. Clean the air intake sensors and egr again and see if there's any change.
@@dailyhandsdiy cleaned maf and map sensors too , and changed to oem air filter,still no result 😕 can a loose timing chain be the problem?
If the chain is too loose you get starting issues, chain sounds etc...It's should be the egr or sensors I guess....clean them properly..maf should be cleaned by removing the plastic guards and steel filter inside.
Might be worth having a compression test done.
Also might be a good idea to have the operating pressure and spray pattern checked on the injectors. I worked in a factory designing and testing diesel injectors for 11 years.
I did the same test today and 3 of my injectors are returning more diesel than normal, can that be a reason for black smoke?
Thanks for that helpful video! Do you have a video where you make this setup, how to set all this to check my diesel injectors, because I think I have an issue
Apologies my friend for the late reply. I dont have the setup..but a 6mm rupper pipe cut to fit inside the leak off port and inserting the syringe body would do the job.
Did you only replace the injector no. 4? Seen people claiming you should replace all 4 because if 1 or 2 are bad others are also worn. But it can clearly be seen that only no.4 is looking bad in this test.
Yes just replaced the 4th one and the car runs great
感恩了解，謝謝分享！
Why higher leak off from the injector is bad? It goes back to fuel tank anyway, so how does it ruin the fuel economy?
To goes back to fuel tank but thats not the issue...here, when the engine gets hot, it takes too much crank time to start up...sometimes it wont start.
@@dailyhandsdiy I see, because it doesn't keep the rail pressure after turning off the engine, is that right?
@TomSon-ej3pw Nop...rail pressure get released when the engine is turned off. And when you try to start the engine, rail takes time to get pressurised to optimum as a small amount of fuel leaks pass the injector leak off port and when the rail gets fuel pressure by excess cranking, injector starts to fire up. With a small leak from injector and excess leak off, fuel pressure in the rail goes down and the car wont fire up. This goes on. At certain point, rail gets stable pressure to fire up the engine.
@@dailyhandsdiy In other words leaking injector delays (or even prevents) time to build up the correct pressure to start?
Does it matter if the leak is internal (e.g. stuck nozzle) or external (the overflow excess)?
Hei. Can you give me right answer?
I have one insignia 2.0diesel.
No smoke, but shaking when i push gaspedal.
New: diesel filter, air filter, oil, coolant water cleaned air flow sensors. New timing belt, water pump and something other things. No fault code.
When i go up to 3000rpm shaking gone and looks like give enough diesel. Goes without any problem after. Stop the car and shaking again with accelerating. And then is gone around 3000rpm. And to the next start goes easy. Maybe one injector is bad?
261.000km in car.
Engine shake or wiggle is a result of misfire...mostly...in diesel..injector is the only one thing that cause misfire unless there's some serious decompression in any one cylinder.
@@dailyhandsdiy pressure sensor in common rail? Or pressure valve? Because if its go up to 3000rpm fail is gone and car goes like a rocket. Until i stop and start again.
@cheeba4069 rail pressure sensor shows intermittent stalling and check engine light in most cases, drv same, any leak or closed drv gives a rail pressure related code...Could check the rail characteristics using a scanner.
@@dailyhandsdiy i have foxwell nt414. Eq_ratb1s1 on live data goes from 2.0000to 32.000. and blue but i dont know what it mean this. 0 failure code.
😮@@dailyhandsdiy
I am here late, I hope I'd get an answear. I have kinda the same problem but on a renault so I think the forth one is the one all the way to the left(next to the timing chain) That one is filling up but the other took some untill they started filling and after that they were also filling slower. The problem I have is really BAD black smoke when accelerating hard and I think the problem would be the other 3 because instead of leading back to the tank the fuel gets sent in the cylinder and is more diesel in the mix than needed. In that case the other 3 are faulty. I don't know in your case because they seem to fill in sync. What do you think? Did you solved the problem?
Here the problem was excessive cranking before start...it takes around 8 to 10 seconds to start and when hot, fails to start. the one with too much leak off was worn inside and leaks fuel back to return pipe causing delayed pressurising the rail. In your case, a black smoke can be seen if the turbo is malfunctioning, sensors malfunctioning, turbo boost leaks, egr sticking etc....
Hi. Just done the test on mercedes viano and unsure what the results mean. 2 filled level and 2 didnt fill at all after 30 seconds. The engine was lumpy as hell, and the engine shut off and was unable to restart the test. Was fine once i put return pioe back on.
Vehicles with precise fuel metering, shuts off if there's a leak in fuel return or delivery. Fuel leak off should be minimal. If there's excess or like too much, need an expert diagnose.
Only just seeing this video... How did you secure the syringe tubes to the return line?
I used rubber tubes that fits correctly and tightly inside the return port. Also used the clips so it stays there securely.
So does this suggest a lean condition? Why does it feed back more fuel?
This doesn't mean any condition. Its excessive leak off from that injector. certain amount of fuel comes out injector from its working. It shoud be under certain limit...if its above the limit, you will get long cranking before start as hp pump has to work long to make fuel pressure.
The 4th injector is stuck open yet not triggering a code but causes poor engine performance.
The actuator might be working normal not realising the nozzle is stuck open.
isnt 4th one stay closed? while the other 3 work properly?
because if it was stuck on open, there would be less comong back overflow line, but now 4th one has most overflow in return line indicating its not using fuel like other 3 injectors, meaning stays closed
@@hardikeywan9930 That's a good point, also curious what exactly the excessive leak tells.
Sir, how do I make an experimental tool like that...? Thank you
Hi you need a syringe and 6mm dia hose mainly used for wiper washer. cut them accordingly to fit inside leak off port. Remove the clip and connected pipe from leak off port and seal the end pipe so fuel won't leak. press in the cut out 6mm pipe and followed by the syringe. set up is completed.
Is tha a cause of low power sir? Having low power issue recently on my hyundai accent crdi.
So my lory have a black air from exzoz..this the solution injektor problem right
might be one of the reasons
So the one to the right is clogged?
It's not like clogged...internal parts wear out causing excess fuel leak between the parts...this cause that additional leak off from the port
are they bosch injectors? bike hose outer diameter 7.5mm?
Yes they are Bosch injectors...and I'm not sure if they are 7.5 mm in dia
Which is the bad one here??
4th one, with too much leak off.
Can this leaked one especially number 4 cause increased engine oil? And then dpf clogged?
If you mean oil consumption..then no injectors won't cause oil consumption. And the dpf can get clogged if the injector malfunctions. Also if the oil burning inside the cylinder is high, dpf clogs fast.
@@dailyhandsdiy No, I mean engine oil level is being increased.. They told me that leaked injector can cause it. So they want to test it. Can it be?
If diesel leaks to the cylinder too, it goes thru pistonrings to the oilpan..
When you check oil level, you can smell if there diesel too..
Diesel can leak from injector seals to oil reservoir too.
@@jeantodt666 I made this test last week. 4 of them were nearly equal. So injectors appear good, i consider
@@cagatay-pg2pp if oil level has increased and oil smells diesel, so injector bottomseal could leak..
If we replace faulty injector with another one(new/used) will it work or have to do any programming Or setting before installing???
after change the injector you have to programming, on every injector there is number on every injector and after changing you have to put that number in side ECU, but if you are doing french car you have to be cearful, on french car they cound cylinder form clutch side, on normal car is 1-2-3-4-gearbox, on french is 4-3-2-1-gearbox
If it’s old school injector with no electrics then no coding is required.. 👍
Cylinder 4 is bad here, isn't it? The loss must be the same
Yes the 4th one is bad. there should be equal leak off from each injectors.
@@dailyhandsdiy Thank you information 🙂
no problem bro....
Hi sir, I run a test with one hyundai iload, & found no 1 injector has bubble. What could possibly be the cause? Thanks
Yes can you send the set up instructions or video please dude?
so on this video where injector problem?
Yes, the one heavy leak off was bad. Had starting troubles when hot, power drop issues etc...
@@dailyhandsdiy okey thanks...what cost this problem? is this diesel engine right?
@alooh7796 it costs around 6k. replaced full internal parts. yes its 1.3 multijet diesel
Will it idle rough with a faulty injector
Yes with bad injectors, engine jumps, misfires, shakes badly.
@@dailyhandsdiy Only does it from cold, once engine gets hot runs a bit better on idle but still not smooth
Ford kuga diesel 2.0
Yes exactly, when cold, the fuel will be denser and with bad injectors especially with bad or clogged nozzle, fuel get restricted to be sprayed at proper quantity. And when it becomes hot, fuel get thinner thus escapes the restriction and gets a better spray pattern. the engine smooths out. Same happens if the injector solenoid becomes weak. Cold and failing solenoid will be weak and when it becomes hot works better.
Does faulty injectors lead to engine damage?
In short term no issues but for long....excessive knocking, preignition, lean or rich condition,etc...lastly piston crown damage.
It can melt the piston if the injector is leaking really badly
@@simontist4 melt pistons on my cdi due to bad injectors 😂
How test if the engine no start
You might need a continuous cranking. After 5 6 crnks the excess leak starts to show up.
Does bad injectors cause black smoke?
Absolutely
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Nul, un injecteur peut être défectueux sans avoir un retour de fuite important.
yes thats possible
Btw, how did you do that?
Thats easy, get 4, 60ml injection case, remove the leak off port, insert a bike fuel hose cut into case, insert it into the leak off, close the return line of fuel. start and see.
Kindly do this steps in detailed video from beginning 😕
Will do that once i get my hands on one.
@@dailyhandsdiy ❤️
@@dailyhandsdiy Really clever, thanks for sharing.
Kindly do this steps in detailed video from beginning
My friend has the same problem with an injector which is the solution
i sujest replce that with new one or used one as repair cost will be much higher.