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5-Series (E12,E28, E34, E39, E60) Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)

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Old 12-27-2009, 08:24 PM   #1 (permalink)
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Unhappy Sluggish 1994 520i

My automatic 1994 520i 2.0 runs like its towing boat.

Please help my BMW has very slow acceleration under 3000 revs.

Engine dosnt blow smoke , no knocking or unusual noises. Not sure how long its been sluggish as i only brought it 1 week ago.
Idle is very smooth tho and engine isn't difficult to start, slight hesitation when throttle is pushed then it very slowly gets up in revs ( makes it to red line happily, just very slowly) revs freely (nicely) when in neutral.I had it in at the garage and they changed plugs, looked at exhaust, and timing , they had no idea, cost me 250 NZ dollars .
I don't think they hooked it up to dialysis.
Ive changed the fuel filter ( it was the original so i'm guessing the maintenance probably hasn't been kept up to date. When i start it after it has sat over night it runs perfectly but only for the first 20 seconds max ( or 300 meters of driving then back to its sluggish self.

Keen to sort this issue. any help would be greatly appreciated...
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