boost leak - Team-2G Mitsubishi Forum

bbinion1 · 08-06-2006, 06:16 PM

i have recently known a big loss in power with my gst and i believe it is a boost leak. besides the b.o.v. flange, the tb seal, the IC piping, and the injector seals, where else might there be a boost leak?

bbinion1 · 08-09-2006, 01:37 PM

need help over here guys, i know you going to tell me to search and i went to google and i need advice from the professionals

SCR · 08-09-2006, 03:02 PM

a loss of power can be a number of things...have you done a boost leak test, or are you just visual inspecting the parts you mentioned...have you done a compression test? make sure your motor is running correctly...does your DSM hesitate under boost? sputter? lumpy idle?

give us a bit more symptoms if you can

bbinion1 · 08-10-2006, 11:10 AM

well yes i conducted a boost leak test and found two leaks, one at the b.o.v. flange and one at the tb shaft seal. other than that i didnt find anymore. i recently have been driving and yes, my car does hesitate under boost, but the idle is fine. how should i conduct a compression test to see if my car is ok? or what else can be done so that i can get my power to my DSM back? there is no sign of sputtering but i just notice that the acceleration seems slower whenever i push my car to the redline, like it seems to take longer to get there. i have the stock turbo, but it still never use to do this...im a little lost at this point.

SCR · 08-10-2006, 12:59 PM

sounds like a disgustingly nasty boost leak...fix the 2 leaks you found thus far and see how she runs. To get a compression test you can take it to a mechanic, or you can go to autozone/pep boys/kragen and buy a compression tester and DIY

bbinion1 · 08-10-2006, 03:18 PM

yeah see that was my question orginally, where else might there be boost leaks located?

SCR · 08-10-2006, 05:49 PM

well if you know you have 2 leaks, fix those to find out if you have another....if your leak is in fact just the 2 that you found, why spend more time looking for something that isn't there

bbinion1 · 08-10-2006, 05:55 PM

yeah i just wanted to know any other locations where boost leaks occur often so i can check to see if boost leaks are there too.

SCR · 08-10-2006, 05:57 PM

throttle body, IC, IC piping, intake....those are the most common. Now go fix your leaks

bbinion1 · 08-11-2006, 09:16 AM

i appreciate the advice man, ill go check up on those areas

Rob · 08-11-2006, 12:27 PM

Quote:

Originally Posted by SilverMitsuGS-T

throttle body, IC, IC piping, intake....those are the most common. Now go fix your leaks

and as i just found out today, it could be a defective bov.

Attack Eagle · 08-11-2006, 07:48 PM

and all the vacuumlines on the backside of the throttle body have a nasty habit of blowing off too.

When did you last change the spark plugs?

bbinion1 · 08-20-2006, 09:45 PM

ive change my spark plugs recently...i have the NGK's, but ive never heard of a defective b.o.v., i have the greddy rs. do those have a habit of being defective?

Rob · 08-20-2006, 11:08 PM

The greddy RS blow off valve imo, is a piece of ****.
And anyone that tells you to do the one spring mod, doesn't have a fuking clue what they are talking about.

Arrogance · 08-20-2006, 11:53 PM

Are you venting the bov?

You need to fix the leaks, because a bunch of small leaks will hurt performance just as much as one big one ..

Soapy water works wonders on intercooler piping.

Have you changed anything before it started running poorly?