[lemonukas]

As per title says I had bad acceleration on my 325i n52b engine. Feels like jumping. I don't know better explanation. On idle engine runs smooth. I will gona plug in my dis. But maybe some one had an Idea what it can be.

[briers]

Is this a recent occurrence?

Sure it's not the traction control stepping in in this damp weather

I pulled a massive slide coming off a big roundabout today and getting power down is pretty unsettling

[A_P]

This is way too vague bro.

At a guess could be anything from traction control kicking in.

Coil pack or spark plug misfire... check ur software for bad cylinder.
Fuel filters.
Fuel Pump.

Or a wild guess here but could be muscular spasms of your leg.

[shrink]

Many 325i suffer from a power dip at 3100rpm under full load, it's engine management related in the case and a software update can fix this. If you have steps in power all though the rev range or more kangaroo style antics at various speeds then you'll need to look elsewhere

[lemonukas]

Definetly not my leg or traction control
That's more like it like kangaroo stile at various speed. Slow or hard acceleration. I will try tomorrow to change my spark plugs if not raining.
I will try DIS to see if any faults thrown.
I cleaned VANOS about 300 miles ago because was misfiring and throwing VANOS jammed. After cleaning no issues with idle misfiring or cutting of engine.

[lemonukas]

Guys what do you think it's normal sound of my engine.
http://youtu.be/tLOeE7ZVtZ8

[dobbo99]

is it at lower speeds, 1st and 2nd gear?

[dobbo99]

Originally Posted by lemonukas

Guys what do you think it's normal sound of my engine.

sounds like mine, bit tappety/metallic, but they seem to be like that.

find the DISA valve (search youtube or on this forum) and pull the plug on it, see if there is a difference in sound.
some can need a clean, or a replacement, which is a cheap fix.

[lemonukas]

I have bad accelaration on all gears but now notice that puff sound if I press gas pedal quick in makes than that sound.

[Dr Dave]

You need a diesel.

[shrink]

Originally Posted by Dr Dave

You need a diesel.

Been there, done it... Not enough fun when driving hard, not such a nice sound and serious issues with stuff like turbos and dpf due to the fact I do lots of very short journeys each day.

I will be sticking with petrol for some time to come, albeit next time something in a v8 flavour

[lemonukas]

Originally Posted by Dr Dave

You need a diesel.

not for now. i had diesel car before and it put me away from them. long story

[lemonukas]

ok i just logged in my DIS and i got that
DME- 2E69-Knock- sensor signal 2- Signal implausible- Fault currently not pressent
DME- 2A99 DME: Crankshaft- exhaust camshaft, reference - Value outside reference range- Fault currently not pressent
DME - 2A87 DME: Exhaust VANOS, mechanism- stiff; jammed mechanically- Fault currently not pressent

I thinking is VANOS gives me all that troble

[lemonukas]

Which one is VANOS exhaust solenoid?
Top or bottom one?

[lemonukas]

Update
Ok I changed my exhaust VANOS solenoid and oil on my car.
Went for test drive and I still can feel little bit of jumping on WOT but is improvement from what it was.
Checked with DIS and I still got 2E69 knock sensor signal 2 fault. When I asked BMW Luton it's said my car don't have one :
After is checked with his system. Tomorrow I will try to change spark plugs and I will see if any improvement.
Any suggestions?

[lemonukas]

Update:
Just changed spark plugs and car feels more respond from throttle but I only try only half of it. Later today I will try to push it more. Than plug my DIS and I will see if any more faults coming.
Have good day everyone