Vaccum/MBC question

Post by **Florida240sx** » Sun Apr 02, 2006 2:46 pm

Driven 12hrs in my Ka-t over the past 2 days. About 800miles....Drove down to the nissan meet down in sunrise,fl. After the meet on my 4hr drive back home I installed my mbc. Knowing I would have all that highway to tune my car. I hooked it up and it keeps me between 11-12psi which I'm happy with. I didn't notice it last night, but today my rpms stay at 1400ish and my vaccum is -17 instead of -22. Hissing noise coming from the engine bay. I pop the hood and it's my mbc. I pinch the line on the fpr side and noise goes away and vaccum drops back to 22. Is this common or do I have a problem?Anything bad that can come of this?Turbo XS MBC. Thanx for your help.

Post by **S14tat** » Sun Apr 02, 2006 4:13 pm

sounds like a bad mbc, mbc isn't suppose to leak at idle.

Post by **Florida240sx** » Tue Apr 04, 2006 7:46 am

it works fine.Keeps psi between 11.5-12 If i had the nipples backwards would it still work?

Vaccum/MBC question

Vaccum/MBC question

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