adjusting valves

[u3b3rg33k]

so to adjust valves HOT just take off VC, unplug AFM, use a 10mm and small allen wrench right?

...Sounds like the tried and true method of valve adjusting

What's the best way to adjust valves while COLD (75' F)

Why would you unplug the AFM? That won't prevent the car from starting, idling, or running @ WOT...

[Sagaris]

Some VAFM equipped fuel systems (Toyota for one) run the fuel pump when the AFM flap moves due to engine vacuum. It wouldn't work with the ignition off though so maybe that isnt what he was getting at. I think Motronic runs the fuel pump when it sees a crank position sensor signal, I could be wrong though.

[Beach Bum]

Why would you unplug the AFM? That won't prevent the car from starting, idling, or running @ WOT...

I think some of these mooks are talking about adjusting the valves with the car running, but I have no clue how you'd go about adjusting an eccentric-style system while the car is on.

[nando]

Some VAFM equipped fuel systems (Toyota for one) run the fuel pump when the AFM flap moves due to engine vacuum. It wouldn't work with the ignition off though so maybe that isnt what he was getting at. I think Motronic runs the fuel pump when it sees a crank position sensor, signal could be wrong though.

E30s (except the 318is) only run the fuel pump when the ECU gets an RPM signal.

[bmwstudent]

i was busting nando's chops for saying that "the lash gets bigger when the engine warms up." I don't think he meant what he wrote, but you never know. He hasn't responded.