I picked up a 88 325i vert a few weeks ago. 3 owner car, the previous owner has had it over 10 years. It was pretty rough, but the price was right so I drove it home. I replaced the fuel filter, fuel pressure regulator, and spark plugs (had a decently new set of bavauto plug wires) All of that helped immensely, it had a pretty bad idle surge, jumping from 700-1500 and it now idles right around 900rpms.
That being done, the car still feels very sluggish. My 86 325es feels much quicker.
The previous owner replaced the water pump, thermostat, and radiator 3k miles ago and when I asked if he replaced the timing belt he said no, but he replaced the belt for the water pump which has me thinking that he may have skipped a tooth on the timing belt. Knowing this I haven't rev'd the car past 5k rpms ad it feels like it doesnt want to rev higher anyhow. I checked the compression just to be save and they were all within 7psi of 180.
Would a bad afm be a possibility? or should I pull the timing belt and make sure its good? I would have already but I havent had the free time to yet but may get to this weekend.
That being done, the car still feels very sluggish. My 86 325es feels much quicker.
The previous owner replaced the water pump, thermostat, and radiator 3k miles ago and when I asked if he replaced the timing belt he said no, but he replaced the belt for the water pump which has me thinking that he may have skipped a tooth on the timing belt. Knowing this I haven't rev'd the car past 5k rpms ad it feels like it doesnt want to rev higher anyhow. I checked the compression just to be save and they were all within 7psi of 180.
Would a bad afm be a possibility? or should I pull the timing belt and make sure its good? I would have already but I havent had the free time to yet but may get to this weekend.


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