First i'd like to say greetings to all the people on this forum, i've just made the account here and im totaly new, so i hope i post in the corect section, also first time i'm posting anything related to my car, a E36 318is from 1993, i've bought the car in february, i've changed all the oils and filters from the car when i've bought it. The car was handling amazing and was really fast for a 93 and 4 cylinder car, it never burned oil or anything to show any signs of high wear..I even had a road trip with 42MPG(6.8L/100km) on the summer vacation All cool and great, until 2 weeks ago when I think, i might have money shifted it. Instead of going from 3rd to 4th gear, i've went from 3rd to 2nd (i was in 3rd - 5.5~ish RPM), so god knows how much rpms the engine had when i shifted into second accidentaly, i've instantly pressed the clutch and shifted into 4th after i've felt the engine rev like crazy, immediatly i've felt a loss of power.. and i thought that i should pull over.. so I did, the car instantly died, it couldn't stay idle, i've swapped the spark plugs cuz the car didn't even want to start after i've pulled over, and besides that whenever i try to start it (even after those 2 weeks since the tragedy) it cranks slow, it feels like it's not "spinning" as fast as it should.. dunno if i explained this correctly. Anyways, after changing spark plugs it started up, but it still spinned the engine slow, but at least it started.. it felt like the car had 2 pistons working or 3.. really weak and slow, got it back to the garage hardly.. with like 40 km/h, i thought the fuel injector on some cylinder was bad, so i took out the fuel ramp and switched with a different fuel ramp and injectors but no difference, engine ran the same, so i checked the coils, all of the coils work, afterwards I checked fuel pump, which had a imperfect contact and I wonder to this day how the heck the car even got gas into the system because the pump barely made contact with the wires.. anyways, i've made new contacts and now it works as it should.. then I went out and did a compression check on the engine, 3 cylinders gave me 125 psi and 1 cylinder gave me 175 psi, that might be worn piston rings, anyways, it has enough compression to run fine.. so it's not the compression.. ok compression = ok valves, so i haven't bent anything inside the engine.. although i've measured with a multimeter the spark wires from the coils, and spark wire on cyl no. 3 was bad, replaced it hoping that the nightmare is over, and the car now runs, pulls hard like it should but the engine is still extremely loud and idles rough... ( i have to add that i have a sport exhaust but the car never sounded so loud, it was a pleasant sound at idle and abit louder on revs )
PS: the car never idled perfectly, but the needle never jumped like that, perhaps only on very cold mornings, but not even then as hard as now.. I hope i've explained this issue good enough cuz I kinda wrote the last 3 weeks in a few minutes.. Thanks alot peeps, looking forward for your ideas of what this problem might be. I also attached a video with the car's current state.
Also i forgot to add that i've cleaned up the ICV valve when i took off the throttle body. I've added a youtube link with the car so ya'll can hear how it sounds.
Here's the link :
https://www.youtube.com/watch?v=CJec8e-iodA&feature=youtu.be
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