low vac/****ty idle

[originalsin]

ok so i just got done replace my headgasket, everything is good, except now i have low vacume. i replaced all the lines, so i doubted it was that, but i decided to clamp them off and see if it helped at all, no dice. im pulling like 15in hg. car is idleing at like 1000-1500 but if i let it idle for to long it like cuts out to 500 and seems to be sputtering, but doesnt die. also, last year i was boost 12psi (due to 3in turbo back and intake i think) but this yr only like 9-10 lbs

[c-rad]

Welcome to the club. Mine only pulls 10" of vac at 800 rpms and about 15" of vac at 1200 rpms. I think mine is a timing related issue though.

[originalsin]

any1?

[shane_lxi]

mine kind of did that before retiming it, now I get about 19"-20". Also, the idle thing was a seperate issue for me caused by having too large a maf without an AFC.

[tyrannix]

out of curiosity, have you done a compression test since changing the headgasket?

CJ

[originalsin]

no but i should, runs rly strong tho

i will dial in timing 2marow tho

[dvd]

i think i have the same problem as you guys too

[c-rad]

I got mine fixed. It was the timing that was off.