Vacuum pressure?
#1
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Vacuum pressure?
I have a 6400 mile Pettit ported engine My vacuum at idle is -13 lbs. constant. However when I am decellerating the negative pressure can go to -19 to -21. I have been reading on other posts that it should be -17 to -20 at idle. I checked and double checked the vacuum lines for any loose ones and all is good.
Is this normal?
Is this normal?
#3
I have a streetported motor and I'm getting around 13 or 14 in. at 750 rpm. I was wondering myself if I should be getting more vacuum at idle. I have been having some trouble with the sequential turbo operation, so I thought there might be a problem. But, I was not able to find any vacuum leaks at all.
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