ok so i did a boost leak test. my cuplers on the icp are leaking by the clamps. i got c clamps or t clamps whatever they are called. well i keep making them tighter and no luck. i think im geting tight enoff to start bending the pipe. also my aps bov is leaking by the nut on the frunt but it is so tight i cant even turn it on or off. now what.

p.s. my forge unos mbc is making some odd sounds when im doing the testing. any help will be great. thanks so much.

 

ok updating here. i think i fixed the piping. i still am going to need all new clamps. bov no idea wtf pos is doing. and now i have a boost leak in my boost line going to the gauge. so now what is a good line to fun for that since it is on psi and vac.

 

ok updating again. i found the leak in the line for the gauge. hum. not cool. ok so i got to fix that. what kind of strong line should i use.

bov still can figure it out.

forge mbc makes cool sounds at atround 15 psi. ?????????????????????

 

as far as vacuum line... try some smaller fuel line... its pretty durable and works fine. as for the aps nut, take the nut and "bolt" out ... put some teflon tape on it and reinstall... should help, try and see

 

ok will do right now. the line is temp fixed. holding fine. now i still have a leak somewhere but it is so min i cant find it. the boost gauge slowly and i meen slowly drops from 15 to 0. any ideas where to look. let me go try the bov fix.

 

updating. bov. FIXED thanks so much. but oops sounds like there is a leak by the intake manifold. i never took it off and never f'ed with anything. any idea's where to look????.

 

ok well i found another leak. man am i glad i did this. it seems the other leak is from my licp. where the braket was welded. not cool.

 

This is why we tell people to do boost leaks. You don't normally find one - you normally find several.

Dan, the MBC is making noise, because that is where the boost is set. If you increase the pressure in the system above where it's set to hold boost, then it will bleed off the pressure through the bleed hole. If it's making noise at 15psi, then you're not running much boost, haha.

Next time you do it and hear the MBC, quickly turn the knob to increase the boost, and you'll hear it go away. I pressure test my system to 25psi as it is now, and it currently doesn't leak anywhere, and the MBC doesn't rattle.

 

yes i got leaks like the outcast vid on mtv ms jackson. lmao. i did that, i turned it upand the sound went away. i got to go to work tomarrow so i put the car back togeather. il finish or try to tomarrow. il dial in the boost AGAIN to 20 21 psi and then see if i notice a diff. i dont have a leak near my intake manifold. i found where it was. il fix that tomarrow. thanks warr and the other guy for the help. i learned some col **** today. im really glad i did this.

 

I got boost leak last week too. Well my gt35r just only boost to 16psi no matter what. Checked leak on bov, hoses, pipes... Finally changed out the Hallman mbc, which been running fine for the last 2 years, and put in a cheaper backup mbc I have in the garage. Bamm! 32 psi. How can you tell it is the boost control if you don't actual replace and test?

 

i never said the mbc was causeing a leak. it was spiking. i did all the recommended steps to fix that problem. still did it. so i redid the steps again. also did a boost leak test for my own testing and i found alot of problems that were fixed. most of them. ill finish the testing tonight.

 

QUESTION. WHEN I START TO PUT PSI IN THE SYSTEM AND LESTS SAY I GO to 20 psi. the mbc does not make fun sounds. should it hold all day long or eventualy lose pressure.

 

ok sounds like there is air coming out by my spark plugs or in that area. not good??????????? that was at 20 psi. should i tighten them.

 

it will loose pressure even though there are no leaks

 

ok seems it is not the spark plugs. but it is somewhere in that area. also when i take the oil cap off i here air coming out. this test was at 20 psi. any ideas or help. should this be happening?