low vacuum issue
low vacuum issue
so here is the deal i got a fully built ls fully tuned up to 20 psi .well i drive normally at around 15 psi.decided to crank it to 17 and see how it felt .and it felt pretty good then when i let off the gas my idle was around 1300 then went back to 1k.and my gauge was reading 18 on the vacuum and my greedy was at 91 92.i usually set at 22 and 99+ on my greedy and gauge.ive went threw all the lines nothing is off or cloged.my bov isnt as loud as it was either.and it still hold boost no leaking no spikeing.any advice wut to check will help kinda stumped on this one. thanx
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Vtec??????
LS turbo 400WHP
H22a hatch 5 lug 187WHP
Vtec??????
LS turbo 400WHP
H22a hatch 5 lug 187WHP
What cams are you running ? check timing (cam/ignition)... If everything is in time then compression/leakdown. post results.
no vaccuum usually means time for a teardown....:thumbdown:
no vaccuum usually means time for a teardown....:thumbdown:
the engine only has bout 4k on ima do a comp check on it later.it was sitting for alil bit
__________________
Vtec??????
LS turbo 400WHP
H22a hatch 5 lug 187WHP
Vtec??????
LS turbo 400WHP
H22a hatch 5 lug 187WHP
compression is good 180 180 179 175 i got crower stage 2 turbo cams timing is good im get da timing light out tomorrow and check out dizzy timing would a slipping alternator belt cause it to lose vac
__________________
Vtec??????
LS turbo 400WHP
H22a hatch 5 lug 187WHP
Vtec??????
LS turbo 400WHP
H22a hatch 5 lug 187WHP