T6-transporter
New Member
Hello everyone,
Looking for some extra help with my pain in the a$$ transporter.
I got it a couple of years ago and the speedometer just turn over 210.000 km. It suppost to have got the timing belt and water pump changed but obviously not.
Had it running on the highway and out of no where i just dies over. Got it toed to a mechanic VW, says the timing belt has broken, so they want to put new belt+w-pump+camshafts on it and will cost a fortune.
Get it toed to another mechanic who starts the repair. They replace timing belt, water pump, a couple of roller lifters, injector seals.
After putting it back together they said it won't start. They get it running on starter gas but not by it self. Does not even make a try without starter gas. They have primed the fuel system but no power to the injectors. They troubleshoot the electric and find some bad wires in the main harness of engine cables. Fix them but still do not start. They find the fault code "P056200 supply voltage low". The car has been outside during the repair (probably 1-2months). What i can get out from them, they have not put the exact injector to the exact cylinder back, but "does not think it matter that much".
After a while i decide to bring it back to my own workshop. I usually do not work with as new cars as this one since i do not have all the great tools or computers for it.
However i start the troubleshoot my self, checking everything that they might have been touching. I also trying to find some info on the internet, find a lot of helpful information from this forum.
Continues to troubleshoot but somehow i end up in a dead end and not sure how to proceed. That why i make this post as a "last call for help!", before i send it down the hill..
So what has been done:
I removed the EGR cooler on top of the engine, removed the entire front of the vehicle but left the AC-cooler sitting.
Put the engine in TDC, check the timing with the pins, removed the timing belt and also put the HFPP in the right spot (was in wrong position). Put it back together, checked the HFPP seal/filter for dirt, but no damage at all (no metal parts). Can't find any broken wires. Removed the injectors, check that the pistons are at TDC when camshaft + timing belt are put in with pins, all ok. Checked the camshaft (inlet + outlet) for damages, nothing in the "tubes" that are loose or seems to have moved from the crash.
Have then tried to rotate the engine by hand and losen the outlet of HFPP and i can see that it pumps fuel. Have also tried to power the valve in the rail to make sure that it builds up fuel in the rail during cranking and it does (can hear the engine moving slower caused by the high fuel pressure). Bleeded the fuel system probably 10-15 times, check the fuel before fuel filter, after fuel filter, into HFPP, after HFPP, in the return of the rail. Doing a compression test with a pressure gage for petrol engines, getting above 18bars on all cylinders, but do not have the right tool the check it propertly.
Checking the timing 3-4 times just to make sure nothing is off, not even by a tooth or a small angle of nothing. Making sure that the cams are opening/closing to the right cylinder at TDC, all good.
Tries to crank it over, geting read values on RPM, Rail pressure (above 300 at start), no power to injectors and 0mg fuel injected. Does not even make an attempt to fire up. Read a thread on T6forum to remove the camshaft position sensor. Does this and WOOP, it tries to fire it up. It give is a couple of tries, almost getting it to run by it self for a sek. Reading through the thread once again and it says that the "sender" for camshaft sensor might have "moved". Removes everything again (down so i can visually see the camshafts), check the "sender", it is stuck to the camshaft, impossible to move. And according to the pictures that hey send in the tread, it seems to be positions in the right way when in TDC. Putting it back together, do the same test again, it tries to fire up when the sensor is removed. Just to be sure, buys a new sensor, does the same test and same results, tries to fire up while out, but put in -> no ignition/injections.
After a couple of tries, trying it again but this time with starter gas. After this it does not fire up at all, even with the sensor in place or removed. Not a single fuse is blowed of the ones i have checked (all in middle of panel inside car), all in front of car beneath the battery (have not open the data-box cover yet).
I'm not sure how to continue, as i said, looking for the last glitch of sunlight...
I have borrowed friends computer with Autocom release 2021.11, so if there is any suggestions to record something to continue or any help at all would be really thankful!
This are the threads i been reading through:
www.t6forum.com
www.t6forum.com
www.t6forum.com
www.t6forum.com
Best regards
Mattias
Looking for some extra help with my pain in the a$$ transporter.
I got it a couple of years ago and the speedometer just turn over 210.000 km. It suppost to have got the timing belt and water pump changed but obviously not.
Had it running on the highway and out of no where i just dies over. Got it toed to a mechanic VW, says the timing belt has broken, so they want to put new belt+w-pump+camshafts on it and will cost a fortune.
Get it toed to another mechanic who starts the repair. They replace timing belt, water pump, a couple of roller lifters, injector seals.
After putting it back together they said it won't start. They get it running on starter gas but not by it self. Does not even make a try without starter gas. They have primed the fuel system but no power to the injectors. They troubleshoot the electric and find some bad wires in the main harness of engine cables. Fix them but still do not start. They find the fault code "P056200 supply voltage low". The car has been outside during the repair (probably 1-2months). What i can get out from them, they have not put the exact injector to the exact cylinder back, but "does not think it matter that much".
After a while i decide to bring it back to my own workshop. I usually do not work with as new cars as this one since i do not have all the great tools or computers for it.
However i start the troubleshoot my self, checking everything that they might have been touching. I also trying to find some info on the internet, find a lot of helpful information from this forum.
Continues to troubleshoot but somehow i end up in a dead end and not sure how to proceed. That why i make this post as a "last call for help!", before i send it down the hill..
So what has been done:
I removed the EGR cooler on top of the engine, removed the entire front of the vehicle but left the AC-cooler sitting.
Put the engine in TDC, check the timing with the pins, removed the timing belt and also put the HFPP in the right spot (was in wrong position). Put it back together, checked the HFPP seal/filter for dirt, but no damage at all (no metal parts). Can't find any broken wires. Removed the injectors, check that the pistons are at TDC when camshaft + timing belt are put in with pins, all ok. Checked the camshaft (inlet + outlet) for damages, nothing in the "tubes" that are loose or seems to have moved from the crash.
Have then tried to rotate the engine by hand and losen the outlet of HFPP and i can see that it pumps fuel. Have also tried to power the valve in the rail to make sure that it builds up fuel in the rail during cranking and it does (can hear the engine moving slower caused by the high fuel pressure). Bleeded the fuel system probably 10-15 times, check the fuel before fuel filter, after fuel filter, into HFPP, after HFPP, in the return of the rail. Doing a compression test with a pressure gage for petrol engines, getting above 18bars on all cylinders, but do not have the right tool the check it propertly.
Checking the timing 3-4 times just to make sure nothing is off, not even by a tooth or a small angle of nothing. Making sure that the cams are opening/closing to the right cylinder at TDC, all good.
Tries to crank it over, geting read values on RPM, Rail pressure (above 300 at start), no power to injectors and 0mg fuel injected. Does not even make an attempt to fire up. Read a thread on T6forum to remove the camshaft position sensor. Does this and WOOP, it tries to fire it up. It give is a couple of tries, almost getting it to run by it self for a sek. Reading through the thread once again and it says that the "sender" for camshaft sensor might have "moved". Removes everything again (down so i can visually see the camshafts), check the "sender", it is stuck to the camshaft, impossible to move. And according to the pictures that hey send in the tread, it seems to be positions in the right way when in TDC. Putting it back together, do the same test again, it tries to fire up when the sensor is removed. Just to be sure, buys a new sensor, does the same test and same results, tries to fire up while out, but put in -> no ignition/injections.
After a couple of tries, trying it again but this time with starter gas. After this it does not fire up at all, even with the sensor in place or removed. Not a single fuse is blowed of the ones i have checked (all in middle of panel inside car), all in front of car beneath the battery (have not open the data-box cover yet).
I'm not sure how to continue, as i said, looking for the last glitch of sunlight...
I have borrowed friends computer with Autocom release 2021.11, so if there is any suggestions to record something to continue or any help at all would be really thankful!
This are the threads i been reading through:
CXHA Non start [Resolved]
Hi Guys I have a 2019 T6 here CXHA engine.Was going down the motor way then just bogged out like it ran out of fuel. Now it won’t start I have 350bar of rail pressure fuel up to the filter. I’m getting a cam and crank signal. But it’s like the injectors are not firing. The vehicle will start on...
2.0tdi crank but no start with no faults
I currently have a 2.0 tdi T6 in the workshop that will not start. It had a Egr fault once but did not return. I've checked everything I can think of and was looking for some direction. On crank it has good fuel pressure, air flow, rpm signal both for cam and crank. Timing is bang on and belt...
Intermittent starting issue
Every now and then since I bought my van about 2 years ago I have had an issue where it fails to start, the engine turns over as normal but doesn't fire even if left turning over for several seconds. When this happens, it usually happens repeatedly but if left for a few minutes will then start...
Won’t start. No fault codes
Good evening guys, Im wondering if someone could help, I have a 2018 t6 transporter engine code CXGB with 118,000 on the clock van would crank but would not start, i was told to get the injectors tested as an independant mechanic said it sounded as if it was not getting fuel, got the injectors...
Best regards
Mattias
