Great video! My 2004 TDI wagon was due for a fuel filter change. Did that, all good. When I went to reprime by cycling the key: no fuel, no buzz (the pump was not buzzing).. turns out the BEW tdi engines can run with their lift pumps not operating! No continuity on the pump's power contacts either. It had been dead for a while I bet. One new lift pump later and she's purring like a kitten. Real tough to keep this job clean I highly recommend folding the carpet up and out of the way and taping it with duct tape.
Nice job! Clear and concise. One minor suggestion for the next level of your videos would be to speed up the video when you are not speaking or when you are demonstrating something that is straightforward. You might be able to shave off 5-10% of the time while retaining your videos' content and meaning.
I just cleaned the sieve inside the pump (it needs to be opened), replaced the filter and the problem was solved. Of course, it depends on the case ...
I have a 2004 New Beetle with a BEW Tdi and after changing the filter the ignition key prime method isn’t working, my lift pump is running briefly on “key on” but it doesn’t bring anything out of the tank- time for a new pump?
It could have failed. Many time the pump has failed long before any noticeable systems. Opening up the fuel system is normally when people find out their lift pump has failed. If nothing comes out of the hoses and the pump sounds like it is spinning more than likely the pump is bad.
I have a 2004 VW golf tdi that stopped running. The fuel pump was bad so I replaced the fuel pump and filter and it still wont start. I have purged the system and checked for pressure, its all good. Any thoughts?
Thanks, just wondering why the rag in the exhaust allowed the car to start?? I have a similar problem with a client's car hard to start. will be hooking up fuel pressure gauge as you did to check pressure from pump. Thanks again!
I honestly have no idea. The customer told me that’s what he did to start the car so tried without the rag and it wouldn’t start. Perhaps the restricted exhaust allows the engine run on slightly less fuel and therefore starts up and once the engine speed increases the tandom pump effectiveness. I manual transmission car might be start by roll starting as well because of the increases engine speed.
About to change the lift pump on my TDI AVF, long crank time when the car has been sitting a day.. took off the feed pipe from the filter and turned to ign. Pump makes some awkward noise and no diesel comes out... Does the lift pump run when car is running? Or is it all tandem pump? Car runs and pulls fine once started Tandem pump was replaced some two years ago
Haha best mistake ever... When I serviced the car this spring/summer I’ve accidentally swapped the lines to the filter.. So feedline went through the returnvalve🤦🏼♂️🤦🏼♂️🤦🏼♂️ Just wondering why the car has been running for so long, and just now beginning to make trouble. But pump has been replaced, so has the filter and valve.. and fuel lines fitted correctly 🤣 runs beautifully now.. just tried it this evening, sitting from Friday afternoon and it started promptly 😂
Hi , have a 2005 vw touran 1.9 tdi .Have the same problem but if I park can on incline (front facing down) starts on the turn also when I fill fuel at the garage within seconds it gets air locked.Any ideas?
@@troygoodnow5825 Had to change my fuel filter, no telling how long it had been. Got it from a chick that only changed the oil, put dirt cheap brake pads on & no telling what else. Think I need a new AC compressor, but not worried about it right now since it's October.
I have a 2013 Jetta TDI, I put 2 of them and make 1 good 1 , but the 1 i fixed it was totaled airbag drivers side, I have it all together and I can not get the car to get fuel,any idea?
Thanks. I just liked and subscribed to your channel because you did excellent in your video. However, I have jetta 2008. It cranks but won't start. I remove the gas line from the pump and start the engine to see if the gas would spill out of the gas tank but nothing do you think the fuel pump has problem? I took the pump and tried it on the car battery 12v it spins but won't spin in the gas tank
Can you hear the pump run at all when it’s in the tank? You have a power or ground issue going to the pump. You could always power it up in the tank with some jumper leads and see if it will actually pump fuel. It may spray fuel so be careful. If it does pump that way then you will need to find the other issue. It could be a fuel pump relay, blown fuse or even ignition switch issue.
I suspect that since we had low fuel pressure we had low fuel injection quantity the back pressure of the rag in the tailpipe allows more unburnt fuel to remain in the cylinder and it mixes with the incoming fuel charge enough to fire up.
Interesting. I have had a hard start (long crank)!after the car sets overnight, but it would start fine if the car only sat a few hours. My hard start has turned into a no start. It’s throwing no codes.
I have no psi from my lift pump. Lol starts everytime. 04 bew tdi. Was doing a purge and couldn't remember which was the feed/return so I keyed on and got no flow. But I have thought last few months that the extra one second of cranking was unusual.
I used a factory unit. Part number 1j0919050. I don’t know if I have ever used Magnetti Marelli parts before so I don’t know if they offer quality parts or not. I typically use factory parts because I can get them faster than the aftermarket parts.
@@ThePracticalMechanic Of course I understand. I have got problem with cold starts. If car stands more than 12 Hours, first start Is very difficult... I changed tandem pump, have new o-rings on injectors, new fuel filter, but nothing works....What I found out Is: before first start I turn on And off the ignition for 3-4 times and then start. This method works for me. But I want to solve this problem. Could it be weak lift pump? My engine 1.9tdi pd 110kw. Sorry for my English.
It could be a weak lift pump but it seems like the system is losing its prime as well. My lift pump was weak and I had all sorts of issues. The o rings on the filter are a common place for air leaks that allow air into the system when the car is off. The o rings will often seal under pressure so when the pump turns on the air gets trapped into the system and has to be purged out by cycling the key a few times or cranking it for a while.
@@ThePracticalMechanic Thank you very much for your answer. O-rings on the filter are new. The lift pump Is the last thing... But it realy looks like Its loosing the prime. But I do not know where. Fuel filter, valve on fuel filter with o-rings ALL new, tandem pump - new. All hoses are dry, no leaks. I will try to change lift pump. Thank you And have a nice day.
Hard to start Long cranking First start is ok mostly But when warmed up sometimes needs long cranking But it never starts on the turn of the key Have tandem pump only AJM engine No lift pump in the tank with the float Fuel filter is new Tandem pump is fairly new Any guess?
Biggest problem I see is air leaks allowing the fuel to drain back. Sometimes a clear hose needs to be installed on the return hose near the filter to watch for air bubbles.
Hey man, I have a 2010 TSI Jetta I think I’m having this issue that my filter is not giving enough pressure to my engine, because my car forces too much, I’m going 75 and it’s at 3,000 mpg, and when I drive it normally it feels like it kinda stops a little. You think this might be my problem and I have to replace the fuel filter ?
If you havnt changed the filter in the last several years or last 40-50000 miles then it wouldn’t hurt to change it. The TSI is a gasoline turbo engine and is completely different then the car in the video which is a diesel. If you have a check engine light on or continue to have issues then you may want to have to have the car scanned and/or diagnosed. Thanks for checking out the channel and sorry I couldn’t help out more.
Thank You for the excellent video! Where did you hook up your fuel Pressure Gauge? I used to hear the pump cycle just like in the video, and now do not. It has an extended dead or flat spot in rpm just after about 2700 and really barely moves.
Thanks for watching Jason. I tee'd into the fuel line near the fuel filter under the hood. if you have quick disconnect adapters in your kit you can hook up at the fuel lines near the firewall and coolant reservoir.
@@ThePracticalMechanic Thank you so much! Paid a large amount of cash for a new pump and the car is doing the same thing. Have come to the conclusion that if we are going to own a VW, I have to get back to fixing my own cars.
Pls I want to ask what does it mean as it is showing up on my Volkswagen Passat 2014. Inspection in 20days. Does it means my car due for service in 20days or I can just reset myself I don’t av to take it to mechanic just just reset it myself. Thanks..
hello! i have the same problem, my vw passat 2001 tdi 1.9 its start and the engine work for 0.5 sec and turned off. i most try many time to start the engine, while its show to me "the oil press, stop motor". i switch that with the now one and its the same thing donst work. can some one help me pls?
The oil indicator shouldn’t have anything to do with the fuel system. If the vehicle detects lower oil pressure Then desired the warning light will come on.
A Moses only the Diesel engine Jetta. And the specs might be different on the older and the newer ones. VW only produced this style of TDI for a few years.
@@ThePracticalMechanic I got my 05 GLS to start up after adding new battery and radiator fluid. Car was sitting still for 2 months. Did a test drive. Did three 20-30 min intervals of car idling solid. However, still has a hard idle and rough start beyond that. Sometimes it'll cut off right after attempting to start. Should the next option be to check the fuse and the fuel pump?
A Moses if it starts up at all the fuse powering the pump should be ok. The filter could be restricted or the orings on top of the filter could be allowing air to enter the system. Also sometime idling isn’t enough to remove the air from the system so you have to go out and drive it. There are a lot of things that can cause a rough idle on these PD TDI engines. The wiring harness to the injectors can fail and have a weak connection(codes will be set in engine computer) the injectors have an adjustment under the valve cover that may need to be checked, if the incorrect oil has been used the camshaft could be damaged and this will cause the injector to have a lower pressure and delayed firing. If it was mine and the car sat for a few months I would change the fuel filter and take it around the block a few times and see if it improves.
@@ThePracticalMechanic I want to thank you for your valuable advice. I will go ahead and change the fuel filter as you stated. As a precaution if I ever change a fuel pump, should it ALWAYS be new? Also, given that the car was sitting for so long, is there a need to empty out the fuel tank and replace with new gasoline?
A Moses Hold up one sec. what engine does you car have? Most of the information in the video is for a diesel Jetta. If your is a gasoline Jetta it might need the throttle body cleaned and adaptation performed in order for the idle to be correct.
Not at all. The particular vehicle in the video was having a fuel pump issue and loss of prime issue. Glow plugs normally don’t all fail at once so you will have rough running and black smoke on cold morning. If you have it scanned glow codes may be stored if they have failed.
Great video! My 2004 TDI wagon was due for a fuel filter change. Did that, all good. When I went to reprime by cycling the key: no fuel, no buzz (the pump was not buzzing).. turns out the BEW tdi engines can run with their lift pumps not operating! No continuity on the pump's power contacts either. It had been dead for a while I bet. One new lift pump later and she's purring like a kitten. Real tough to keep this job clean I highly recommend folding the carpet up and out of the way and taping it with duct tape.
Nice job! Clear and concise. One minor suggestion for the next level of your videos would be to speed up the video when you are not speaking or when you are demonstrating something that is straightforward. You might be able to shave off 5-10% of the time while retaining your videos' content and meaning.
Very helpful. I did have to prime the fuel filter to get it started after finishing the work.
I just cleaned the sieve inside the pump (it needs to be opened), replaced the filter and the problem was solved. Of course, it depends on the case ...
Would have been interesting to read the current flow with a clamp meter in both pumps. Great video, thanks!
This was a great video, no steps skipped. Thanks!
Beautifully done and explained! You have one more subscriber.Thank you 👍
Thank you and welcome to the channel. 👍🏻👍🏻🔧🔧🔧🔧
Finds the access.. proceeds to check the other side anyway 😂 thanks for the help though 👌🏼
Yes good video, I thought I new how to change a pump from another video I watched. I know now thank you very well explained.
Thanks you Toby. I'm glad you found it helpful.
You're a master mechanic!
Another subscriber,
weak fuel pump still can start up the car, right? I got stalled on driving. then no start up, cranked and cranked.
Is this a fuel sending unit? I don’t see “ lift pump “ as a part on a Jetta?
Whats the part number for the pump? There seems to be a few options
I have a 2004 New Beetle with a BEW Tdi and after changing the filter the ignition key prime method isn’t working, my lift pump is running briefly on “key on” but it doesn’t bring anything out of the tank- time for a new pump?
It could have failed. Many time the pump has failed long before any noticeable systems. Opening up the fuel system is normally when people find out their lift pump has failed. If nothing comes out of the hoses and the pump sounds like it is spinning more than likely the pump is bad.
so is this the same way on a 2001 VW Beetle TDI 1.9 Diesel.
How do you prime it and where to plug it in and if you have video can you send the video Ty
I have a 2004 VW golf tdi that stopped running. The fuel pump was bad so I replaced the fuel pump and filter and it still wont start. I have purged the system and checked for pressure, its all good. Any thoughts?
3 things:
Crank sensor
Immobiliser
Tandem pump
...order has no meanimg here
You don't have to use any special tool for the thread cap. Just a light sideways hit with a flathead and a 🔨
Thanks, just wondering why the rag in the exhaust allowed the car to start?? I have a similar problem with a client's car hard to start. will be hooking up fuel pressure gauge as you did to check pressure from pump. Thanks again!
I honestly have no idea. The customer told me that’s what he did to start the car so tried without the rag and it wouldn’t start. Perhaps the restricted exhaust allows the engine run on slightly less fuel and therefore starts up and once the engine speed increases the tandom pump effectiveness. I manual transmission car might be start by roll starting as well because of the increases engine speed.
@@ThePracticalMechanic thanks
About to change the lift pump on my TDI AVF, long crank time when the car has been sitting a day.. took off the feed pipe from the filter and turned to ign. Pump makes some awkward noise and no diesel comes out...
Does the lift pump run when car is running? Or is it all tandem pump?
Car runs and pulls fine once started
Tandem pump was replaced some two years ago
It should run all the time when the engine is running as far as I know.
Haha best mistake ever...
When I serviced the car this spring/summer I’ve accidentally swapped the lines to the filter.. So feedline went through the returnvalve🤦🏼♂️🤦🏼♂️🤦🏼♂️
Just wondering why the car has been running for so long, and just now beginning to make trouble.
But pump has been replaced, so has the filter and valve.. and fuel lines fitted correctly 🤣
runs beautifully now..
just tried it this evening, sitting from Friday afternoon and it started promptly 😂
Or prime it with out a gage is it possible?
Hi , have a 2005 vw touran 1.9 tdi .Have the same problem but if I park can on incline (front facing down) starts on the turn also when I fill fuel at the garage within seconds it gets air locked.Any ideas?
I hear my fuel pump kick on could it not be pumping as much as it should be?
Good video, thanks for sharing. Very similar to my 2006 Jetta tdi. Where did you tap into the low pressure w/ your gauge? - take care
I have a 2006 jetta TDI also
@@troygoodnow5825 Had to change my fuel filter, no telling how long it had been. Got it from a chick that only changed the oil, put dirt cheap brake pads on & no telling what else. Think I need a new AC compressor, but not worried about it right now since it's October.
I have a 2013 Jetta TDI, I put 2 of them and make 1 good 1 , but the 1 i fixed it was totaled airbag drivers side, I have it all together and I can not get the car to get fuel,any idea?
Thanks. I just liked and subscribed to your channel because you did excellent in your video. However, I have jetta 2008. It cranks but won't start. I remove the gas line from the pump and start the engine to see if the gas would spill out of the gas tank but nothing do you think the fuel pump has problem? I took the pump and tried it on the car battery 12v it spins but won't spin in the gas tank
Can you hear the pump run at all when it’s in the tank? You have a power or ground issue going to the pump. You could always power it up in the tank with some jumper leads and see if it will actually pump fuel. It may spray fuel so be careful. If it does pump that way then you will need to find the other issue. It could be a fuel pump relay, blown fuse or even ignition switch issue.
Is there a relay or fuse for that pump? I put power to it and the car started
Can anyone explain why it starts with the rag plugging the exhaust?
I suspect that since we had low fuel pressure we had low fuel injection quantity the back pressure of the rag in the tailpipe allows more unburnt fuel to remain in the cylinder and it mixes with the incoming fuel charge enough to fire up.
Interesting. I have had a hard start (long crank)!after the car sets overnight, but it would start fine if the car only sat a few hours. My hard start has turned into a no start. It’s throwing no codes.
I have no psi from my lift pump. Lol starts everytime. 04 bew tdi. Was doing a purge and couldn't remember which was the feed/return so I keyed on and got no flow. But I have thought last few months that the extra one second of cranking was unusual.
Blue line is return.
white smoke on cold start and rough idle for awhile, replaced thermostat and checked glow plugs and wire all good what else can be wrong
I have the same issue with my passat. Did you find what was the problem?
Very nice video...what producer of the new fuel pump did you buy? I have got the same problem. What do you think about Magnetti Marelli producer?
I used a factory unit. Part number 1j0919050. I don’t know if I have ever used Magnetti Marelli parts before so I don’t know if they offer quality parts or not. I typically use factory parts because I can get them faster than the aftermarket parts.
@@ThePracticalMechanic Of course I understand. I have got problem with cold starts. If car stands more than 12 Hours, first start Is very difficult... I changed tandem pump, have new o-rings on injectors, new fuel filter, but nothing works....What I found out Is: before first start I turn on And off the ignition for 3-4 times and then start. This method works for me. But I want to solve this problem. Could it be weak lift pump? My engine 1.9tdi pd 110kw. Sorry for my English.
It could be a weak lift pump but it seems like the system is losing its prime as well. My lift pump was weak and I had all sorts of issues. The o rings on the filter are a common place for air leaks that allow air into the system when the car is off. The o rings will often seal under pressure so when the pump turns on the air gets trapped into the system and has to be purged out by cycling the key a few times or cranking it for a while.
@@ThePracticalMechanic Thank you very much for your answer. O-rings on the filter are new. The lift pump Is the last thing... But it realy looks like Its loosing the prime. But I do not know where. Fuel filter, valve on fuel filter with o-rings ALL new, tandem pump - new. All hoses are dry, no leaks. I will try to change lift pump. Thank you And have a nice day.
No problem. 👍🏻
Hard to start
Long cranking
First start is ok mostly
But when warmed up sometimes needs long cranking
But it never starts on the turn of the key
Have tandem pump only
AJM engine
No lift pump in the tank with the float
Fuel filter is new
Tandem pump is fairly new
Any guess?
Biggest problem I see is air leaks allowing the fuel to drain back. Sometimes a clear hose needs to be installed on the return hose near the filter to watch for air bubbles.
@ThePracticalMechanic
Great advice. Thanks again!
Hey man, I have a 2010 TSI Jetta I think I’m having this issue that my filter is not giving enough pressure to my engine, because my car forces too much, I’m going 75 and it’s at 3,000 mpg, and when I drive it normally it feels like it kinda stops a little. You think this might be my problem and I have to replace the fuel filter ?
If you havnt changed the filter in the last several years or last 40-50000 miles then it wouldn’t hurt to change it. The TSI is a gasoline turbo engine and is completely different then the car in the video which is a diesel.
If you have a check engine light on or continue to have issues then you may want to have to have the car scanned and/or diagnosed. Thanks for checking out the channel and sorry I couldn’t help out more.
Thank You for the excellent video!
Where did you hook up your fuel
Pressure Gauge?
I used to hear the pump cycle just like in the video, and now do not. It has an extended dead or flat spot in rpm just after about 2700 and really barely moves.
Thanks for watching Jason. I tee'd into the fuel line near the fuel filter under the hood. if you have quick disconnect adapters in your kit you can hook up at the fuel lines near the firewall and coolant reservoir.
@@ThePracticalMechanic Thank you so much! Paid a large amount of cash for a new pump and the car is doing the same thing. Have come to the conclusion that if we are going to own a VW, I have to get back to fixing my own cars.
Yup. Life’s a lot harder when you own vw. More expensive too.
Hi buddy having same issue with my 2002 vw passat 1.9 tdi
Pls I want to ask what does it mean as it is showing up on my Volkswagen Passat 2014. Inspection in 20days. Does it means my car due for service in 20days or I can just reset myself I don’t av to take it to mechanic just just reset it myself. Thanks..
I’ve never tried to reset it without a scantool. I normally perform the recommend service closest to the current mileage before resetting.
ThePracticalMechanic. Alright thank so much for ur response
hello! i have the same problem, my vw passat 2001 tdi 1.9 its start and the engine work for 0.5 sec and turned off. i most try many time to start the engine, while its show to me "the oil press, stop motor". i switch that with the now one and its the same thing donst work. can some one help me pls?
The oil indicator shouldn’t have anything to do with the fuel system. If the vehicle detects lower oil pressure Then desired the warning light will come on.
cold start has white smoke and rough idle, replaced thermoste
how do i know if my glow plugs are bad ?
Test them. 2003 VW Jetta TDI ALH 1.9 glow plug testing- with DVOM and amp clamp
i'll be putting a lift pump, filter and new starter in this weekend. wish me luck.
How'd it turn out?
It exploded.
@@edwinzuniga1987 unfortunately it didn't.
Does this apply to Jetta GLS too?
A Moses only the Diesel engine Jetta. And the specs might be different on the older and the newer ones. VW only produced this style of TDI for a few years.
@@ThePracticalMechanic I got my 05 GLS to start up after adding new battery and radiator fluid. Car was sitting still for 2 months. Did a test drive. Did three 20-30 min intervals of car idling solid. However, still has a hard idle and rough start beyond that. Sometimes it'll cut off right after attempting to start.
Should the next option be to check the fuse and the fuel pump?
A Moses if it starts up at all the fuse powering the pump should be ok. The filter could be restricted or the orings on top of the filter could be allowing air to enter the system. Also sometime idling isn’t enough to remove the air from the system so you have to go out and drive it.
There are a lot of things that can cause a rough idle on these PD TDI engines. The wiring harness to the injectors can fail and have a weak connection(codes will be set in engine computer) the injectors have an adjustment under the valve cover that may need to be checked, if the incorrect oil has been used the camshaft could be damaged and this will cause the injector to have a lower pressure and delayed firing.
If it was mine and the car sat for a few months I would change the fuel filter and take it around the block a few times and see if it improves.
@@ThePracticalMechanic I want to thank you for your valuable advice.
I will go ahead and change the fuel filter as you stated. As a precaution if I ever change a fuel pump, should it ALWAYS be new?
Also, given that the car was sitting for so long, is there a need to empty out the fuel tank and replace with new gasoline?
A Moses Hold up one sec. what engine does you car have? Most of the information in the video is for a diesel Jetta. If your is a gasoline Jetta it might need the throttle body cleaned and adaptation performed in order for the idle to be correct.
Are u sure i dont need glow plugs
Not at all. The particular vehicle in the video was having a fuel pump issue and loss of prime issue. Glow plugs normally don’t all fail at once so you will have rough running and black smoke on cold morning. If you have it scanned glow codes may be stored if they have failed.
That tank needs to be cleaned
Putting the new pump in it doesn’t look correct, looks like an ALH unit.
Same name and profession lol
Couple of smart dudes can be the only answer.
@@ThePracticalMechanic
I definitely try my best everyday but this trade can definitely humble you.....enjoy the videos man keep em comming.
Hou to rapper the majoring fuel golf 1998