Once and for all I will have this vacuum line fiasco figured out. I'm about done, but this last issue has me stumped, so I'm asking the M10 gurus out there!
I have an '85 318i that's undergone every M10 issue out there. This latest issue is figuring out my ignition timing. I have the distributor back to factory specs, but I've lost a lot of power doing so. Couldn't get the car above 60 mph when I could easily go 100 before I adjusted the distributor.
I check my vacuum advance but the vacuum line was connected to the throttle body port. The Bentley manual on page 5-19 states that the vacuum line to the solenoid valve goes to the manifold, not the throttle body. Ok, no big deal I connect the hose to the nipple on the bottom of the manifold. But my fuel pressure regulator line is already there! So, I read further into the manual until I see the diagram on page 6-6 saying that the hose of the regulator is supposed to go to manifold vacuum. Hmmm, well I guess I'll have to tee both the vacuum advance and fuel pressure regulator lines together to this manifold port. Does this sound right to all of you?
Lastly, now that the vacuum hoses are reconnected, what the heck is this leftover port on the throttle body? I can only imagine that this is a ported vacuum source, which leads me to think that the vacuum line to the vacuum advance solenoid goes here ( mind you, this is where I originally found my vacuum advance line plugged into).
I have an '85 318i that's undergone every M10 issue out there. This latest issue is figuring out my ignition timing. I have the distributor back to factory specs, but I've lost a lot of power doing so. Couldn't get the car above 60 mph when I could easily go 100 before I adjusted the distributor.
I check my vacuum advance but the vacuum line was connected to the throttle body port. The Bentley manual on page 5-19 states that the vacuum line to the solenoid valve goes to the manifold, not the throttle body. Ok, no big deal I connect the hose to the nipple on the bottom of the manifold. But my fuel pressure regulator line is already there! So, I read further into the manual until I see the diagram on page 6-6 saying that the hose of the regulator is supposed to go to manifold vacuum. Hmmm, well I guess I'll have to tee both the vacuum advance and fuel pressure regulator lines together to this manifold port. Does this sound right to all of you?
Lastly, now that the vacuum hoses are reconnected, what the heck is this leftover port on the throttle body? I can only imagine that this is a ported vacuum source, which leads me to think that the vacuum line to the vacuum advance solenoid goes here ( mind you, this is where I originally found my vacuum advance line plugged into).
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