Car has 127000 miles on the original motor. It is a '89 325i. Since I have owned it it always had a 'clacking' sound and I have no records for this car, so I decided to adjust the valves.
The Bentley Manual calls for 0.25mm on the gap from the rocker arm to the top of the spring retainer for the valve. I went one by one...cranking the motor from the crankshaft, seeing the lobes pointing down, and adjusted the gap to 0.25mm. Does the valve adjusting sequence have to be followed, or can you do any one as long as the cam lobes are pointing down? My sequence was 1-4-6-3-2-5...Bentley call for 1-5-3-6-2-4...would tha make a difference??
I loosened the 10mm, inserted an allen key to rotate the eccentric with the feeler gauge in there, and tightened the 10mm. The gauge was wiggled out after the adjustment.
Once done, Iput everything back with a new head cover gasket. All the bolts tightened in the right sequence, and torque. Put the tube back and the intake bracket.
Started the car and it iddled ok...turned the car off...started again and it was smoother. Now the car iddles without clacking but it is not smooth...Why is that? (thats the question)
I noticed a small fuel leak on a hose that goes to what looks ike a pressure reguator for the 5th injector (3 bolted flange with a hose coming off of it). Hose was split. I cut the hose back, re-inseted, no leak.
Why would the car be iddling irregularly. It did not do that before, or nor nearly as dramatically. Its iddle used to dip a little once in a while when just iddling, but not too bad at all...barely noticeable.
Any suggestions?
The Bentley Manual calls for 0.25mm on the gap from the rocker arm to the top of the spring retainer for the valve. I went one by one...cranking the motor from the crankshaft, seeing the lobes pointing down, and adjusted the gap to 0.25mm. Does the valve adjusting sequence have to be followed, or can you do any one as long as the cam lobes are pointing down? My sequence was 1-4-6-3-2-5...Bentley call for 1-5-3-6-2-4...would tha make a difference??
I loosened the 10mm, inserted an allen key to rotate the eccentric with the feeler gauge in there, and tightened the 10mm. The gauge was wiggled out after the adjustment.
Once done, Iput everything back with a new head cover gasket. All the bolts tightened in the right sequence, and torque. Put the tube back and the intake bracket.
Started the car and it iddled ok...turned the car off...started again and it was smoother. Now the car iddles without clacking but it is not smooth...Why is that? (thats the question)
I noticed a small fuel leak on a hose that goes to what looks ike a pressure reguator for the 5th injector (3 bolted flange with a hose coming off of it). Hose was split. I cut the hose back, re-inseted, no leak.
Why would the car be iddling irregularly. It did not do that before, or nor nearly as dramatically. Its iddle used to dip a little once in a while when just iddling, but not too bad at all...barely noticeable.
Any suggestions?
Comment