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Read the WELCOME ALL BMWFANATICS post.
E46 330i Hesitation on full throttle pull away
- Thread starter Pho3niX90
- Start date
Pho3niX90
///Member
So I changed the filter, what a btch that was.
First jack up the car, checked a video on youtube just to make sure there aren't any tricks involve, so when I finished the video I started to loosen the fuel filter protection cover, and here is where the fun started.
I spent almost an hour just trying to remove the small hoses from the nipples after it was unscrewed. So first i removed the in hoses, thinking that the will be some leakage, the was hardly any (guy gave tip to remove fuse 54 and start the car until it dies, and I did that), so then proceed to move the small hose that doesnt have a clamp, then the other one... Needles to say the car pissd out fuel under what seems to be very high pressure in my face and hair, wasn't a happy camper.
When inspecting the old fuel filter, I tilted it and there was some fuel coming out from the filter, if I didn't know better, i would have thought it was sewage water, filthy as hell.
Haven't tested the car yet, will do so in the next 30min, hopefully this was the cause.
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First jack up the car, checked a video on youtube just to make sure there aren't any tricks involve, so when I finished the video I started to loosen the fuel filter protection cover, and here is where the fun started.
I spent almost an hour just trying to remove the small hoses from the nipples after it was unscrewed. So first i removed the in hoses, thinking that the will be some leakage, the was hardly any (guy gave tip to remove fuse 54 and start the car until it dies, and I did that), so then proceed to move the small hose that doesnt have a clamp, then the other one... Needles to say the car pissd out fuel under what seems to be very high pressure in my face and hair, wasn't a happy camper.
When inspecting the old fuel filter, I tilted it and there was some fuel coming out from the filter, if I didn't know better, i would have thought it was sewage water, filthy as hell.
Haven't tested the car yet, will do so in the next 30min, hopefully this was the cause.
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S
SP33DYV
Guest
Probably the first time ever that the filter has been replaced.
Philip Foglar
///Member
Very well done!! I am going to have to do this for my Wife's car at some point!! :thumbs:
That's good to hear! Means that you are definitely on to something here!! And would not surprise me if this is not somehow also what is causing my car's problems with pinging and flat spots! :nonono:
BMW drivers running around with their heads on fire!! :rollsmile:
S
SP33DYV
Guest
Kish2604 said:
^ What he said. We need an update.
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S
SP33DYV
Guest
That's good news.
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Flex
New member
Let us know if the problem is gone for good please man.
Our 120i does exactly the same thing, low rpm on pull away, more so on high temperature days. Very similar feeling to a carburator engine's flat spot! It comes & goes, not an everyday occurance.
Had it with BMW, they tested & checked all, everthing was doing what it is suppose to according to them.......
Fuel filter & oil seperator are next on my list to change. I'm sure if the oil seperator gets blocked internally, it can mess around with the vacuum demand as it is directly connected to the intake manifold.
Can anybody perhaps confirm that conclusion please, that's my own opinion? :fencelook:
Best of luck! :=):
Our 120i does exactly the same thing, low rpm on pull away, more so on high temperature days. Very similar feeling to a carburator engine's flat spot! It comes & goes, not an everyday occurance.
Had it with BMW, they tested & checked all, everthing was doing what it is suppose to according to them.......
Fuel filter & oil seperator are next on my list to change. I'm sure if the oil seperator gets blocked internally, it can mess around with the vacuum demand as it is directly connected to the intake manifold.
Can anybody perhaps confirm that conclusion please, that's my own opinion? :fencelook:
Best of luck! :=):
Pho3niX90
///Member
Hey flex,
Moranor could shed more light, but that sounds to me very much like the vanos seals, upon my initial investigation into the problem with the 330, those where very common symptoms.
I will keep you updated though, i just need to clean my disa valve as well just to be sure all the necessary items have been serviced and/or replaced.
Need to get ready for the supercharger
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Moranor could shed more light, but that sounds to me very much like the vanos seals, upon my initial investigation into the problem with the 330, those where very common symptoms.
I will keep you updated though, i just need to clean my disa valve as well just to be sure all the necessary items have been serviced and/or replaced.
Need to get ready for the supercharger
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Philip Foglar
///Member
That's good to hear so far! Keep us updated!! :thumbs:
No, those are the Vanos solenoids for intake and exhaust. The Vanos is above this at the front of the head. The Vanos solenoids can be removed and cleaned - worthwhile DIY and very easy.
Flex said:Thanks Buddy, appreciate it, will keep an eye on your results this week.
Vanos seals which are situated between the vano & the cylinder head? O-ring? These are the VANOS right??
Have a nice week.
:=):
No, those are the Vanos solenoids for intake and exhaust. The Vanos is above this at the front of the head. The Vanos solenoids can be removed and cleaned - worthwhile DIY and very easy.
Hey all,
Similar problems here, hesitation on full throttle pull away, car is pretty dead under 2000rpms. The car had serious problems with power when I got it and I've been leaving no stone unturned trying to get it back.
I've replaced:
- Vanos Seals - helped a lot with hesitations but still not completely gone
- CCV and oil separator
- vanos solenoids
- intake boots
- O2 sensors
- disa valve repaired with metal disa valve kit
- sparkplugs done 10,000kms ago
- fuel filter was changed 20,000kms ago before I took delivery of the car, not sure if they used geniune parts or not, will be changing it soon.
I still have the cats on, and there is small hole in one of the muffler boxes, but when the car is idling, you can basically cover the exhaust pipes with your hand completely - there's almost no back pressure.
My guess is that the cats are blocked up (only have a life span of 100,000kms?) and this throws off the engine timing at low revs.
Similar problems here, hesitation on full throttle pull away, car is pretty dead under 2000rpms. The car had serious problems with power when I got it and I've been leaving no stone unturned trying to get it back.
I've replaced:
- Vanos Seals - helped a lot with hesitations but still not completely gone
- CCV and oil separator
- vanos solenoids
- intake boots
- O2 sensors
- disa valve repaired with metal disa valve kit
- sparkplugs done 10,000kms ago
- fuel filter was changed 20,000kms ago before I took delivery of the car, not sure if they used geniune parts or not, will be changing it soon.
I still have the cats on, and there is small hole in one of the muffler boxes, but when the car is idling, you can basically cover the exhaust pipes with your hand completely - there's almost no back pressure.
My guess is that the cats are blocked up (only have a life span of 100,000kms?) and this throws off the engine timing at low revs.
Philip Foglar
///Member
Baron said:
And coil packs?! My Wife's 320i had one coil pack fail some time ago and it had a distinct hesitation at low revs, not as much on pull-off, but when continuing on in a low gear from a yield stop etc. And it seems to be coming back slowly, so one of the other coils is no doubt failing - only replaced the one last time. Problem is, once one of them fails, chances are the rest will follow soon.
Flex
New member
Philip Foglar said:That's good to hear so far! Keep us updated!! :thumbs:
Flex said:Thanks Buddy, appreciate it, will keep an eye on your results this week.
Vanos seals which are situated between the vano & the cylinder head? O-ring? These are the VANOS right??
Have a nice week.
:=):
No, those are the Vanos solenoids for intake and exhaust. The Vanos is above this at the front of the head. The Vanos solenoids can be removed and cleaned - worthwhile DIY and very easy.
Thanks Philip, I already did those, that's why I was hoping they were 'the Vanos' !
Baron said:
Had a look quick on google, lifespan on the cats about 7 - 10 years, even less. Might definitely add to the problem yes.
Speaking of which, think on our ride that needs be replaced with a decent brand free flow system front to back.
Philip Foglar
///Member
Flex said:Philip Foglar said:That's good to hear so far! Keep us updated!! :thumbs:
Flex said:Thanks Buddy, appreciate it, will keep an eye on your results this week.
Vanos seals which are situated between the vano & the cylinder head? O-ring? These are the VANOS right??
Have a nice week.
:=):
No, those are the Vanos solenoids for intake and exhaust. The Vanos is above this at the front of the head. The Vanos solenoids can be removed and cleaned - worthwhile DIY and very easy.
Thanks Philip, I already did those, that's why I was hoping they were 'the Vanos' !
Baron said:
Had a look quick on google, lifespan on the cats about 7 - 10 years, even less. Might definitely add to the problem yes.
Speaking of which, think on our ride that needs be replaced with a decent brand free flow system front to back.
Maybe time for a decat for my car - turned 7 mid last year... :fencelook:
Philip Foglar said:
I thought about coil packs, but there are never any errors about them in the memory. The previous owner had a misfire problem and a single coil pack replacement under motorplan.
This car idles perfectly normally, but on cold days before the engine has heated up, it can have a very rough idle for a few minutes.
Something to look into though...
Legacy
///Member
When a coil pack is busted you will know trust me, the car misfires like crazy, it vibrates under acceleration and feels very very sluggish, like 50% down on power.
The easiest way to find the culprit is to disconnect a coilpack, start the car and see if the situation changes. If one of the coilpacks has no effect this should be the busted one.
The easiest way to find the culprit is to disconnect a coilpack, start the car and see if the situation changes. If one of the coilpacks has no effect this should be the busted one.
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