Weber 38 DGAS : info + settings + tuning

[Weber Sarge]

Black smoke is fuel - either from bad ignition/timing or carb dumping far too much or being set incorrectly . Get the idle speed set right on 750 revs or so , no more . Make sure the float is set correctly as per the drawings and if it's brass make sure it's not leaking and getting heavy . I'm no fan at all of GM ignitions in these things - the Toyota parts were always superior and you don't need a high voltage system to fire a low compression six - it's a waste of time and looking for trouble - especially with the cam gears .
Sarge

 

[Mathew]

Black smoke is fuel - either from bad ignition/timing or carb dumping far too much or being set incorrectly . Get the idle speed set right on 750 revs or so , no more . Make sure the float is set correctly as per the drawings and if it's brass make sure it's not leaking and getting heavy . I'm no fan at all of GM ignitions in these things - the Toyota parts were always superior and you don't need a high voltage system to fire a low compression six - it's a waste of time and looking for trouble - especially with the cam gears .
Sarge

I cleaned out the PCV valve, set the idling at 750 and set the air/fuel mixture and it appears to holding. I drove the truck to work and it drove ok. Thank you all for your guidance.

 

[Kilgore]

Anyone else have their Weber 38 a little leaky/ screws loose after a cold snap?

 

[brian]

They quit leaking and running like crap after they have been thrown in the scrap dumpster.