Spitting and sputtering
I got the car off the car lot it started to run bad
after about a mile, so I filled it up with premium
regular gas and then I left and started running
good and then after about 10 miles at a red light it
started acting up again and I go to the house
change the air filter didn't help it changed the plugs
and now it runs worse than what it did can you
help. When I hit The gas it doesn't want to go any
where it stalls.. Please help.
Check for loose, brittle or damaged vacuum lines around the intake manifold and also going to anything towards the rear of the car. These older Bimmers vacuum lines do not age well and become very brittle over time, especially if they are in the path of any leaking oil. The exhaust also uses vacuum to close exhaust flaps when warming up. You'll find that vacuum line underneath the car right next to the muffler.
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