Can anyone tell me what the vacuum should be on the 3100 engine?
I'm still trying to find my problem..I'm reading around 13in Hg at idle.
Seems like it supposed to be 15 to 20in.
Thanks.

 

should be closer to 20.

if its at 13, i would suspect a leak.

 

Even at 5280ft? (I live in Denver)

 

no clue man, never been to denver, yet


but i will say that even in denver, i do not see how you could loose 7 in/hg.

the normal barometric pressure drop for denver is about 2.5 psi which is close to 5 in/hg, so it could be possible

i would see what other guys from colorado have to say