major power lost..
#1
Senior Member
Thread Starter
iTrader: (1)
Join Date: May 2002
Location: Ca
Posts: 387
Likes: 0
Received 0 Likes
on
0 Posts
major power lost..
Hi, I notice that my car has lost a lot of its power. What is wrong with it? Why does my POWER FC boost shows -(negative) 354mm/hg when engine is started and stays negative when I'm boosting? The engine has been rebuilt and now it has 20k miles on it. I changed my fuel filter, new spark plugs, and new o2 sensors. I haven't done a vacuum hose job yet(maybe that's the reason), and I also might think that my turbo is going bad because my car puffs out white smokes for several minutes when you first start it in the cold. My turbos have 105k miles on it and it hasn't been rebuilt yet. Oh yeah and my RPM also fluctuates. Can you guys please help me on this?
thanks,
thien phan
thanks,
thien phan
#2
Banned. I got OWNED!!!
Join Date: Jun 2003
Location: Central Florida
Posts: 1,619
Likes: 0
Received 0 Likes
on
0 Posts
compression check, if that turns out good have the turbos checked.. also still got a stock cat on that thing? If so either get a midpipe, resonated midpipe, or a hi-flow cat.
#3
Too Many Projects
iTrader: (10)
I have heard that white smike on cold starts means you could possibly have a coolant seal failing. But I wouldn't jump to that being your problem with boost. I get good boost and my engine is about gone. Just check all couplers from the turbo's to the engine and all the vacuum lines.
M-P
M-P
#4
Uber Newb.
Join Date: Nov 2002
Location: LSU - Baton Rouge, Louisiana
Posts: 98
Likes: 0
Received 0 Likes
on
0 Posts
How bad are the RPM fluctuations? It sounds like you might have a vacuum leak.
I smoke a bit every time I start up, but its got a bluish tint to it, and my turbos seems to be eating oil regularly now, so they may be the cause behind that.
I smoke a bit every time I start up, but its got a bluish tint to it, and my turbos seems to be eating oil regularly now, so they may be the cause behind that.
#5
Senior Member
Thread Starter
iTrader: (1)
Join Date: May 2002
Location: Ca
Posts: 387
Likes: 0
Received 0 Likes
on
0 Posts
My RPM fluctuates a lot....My car has been running like this for awhile already...It's been more than a year...I didn't really care much cuz I hardly drive it plus I'm saving up for this summer so I can do a lot of mods to my engine...I'm just hoping that it's not bad compression or O ring failure...
thanks,
thien phan
thanks,
thien phan
#6
3rd motors a charm I hope
Join Date: Apr 2003
Location: Central New York
Posts: 2,054
Likes: 0
Received 0 Likes
on
0 Posts
this is almost certainly a boost problem. do you hear a hissing noise when the car should be boosting. If so you need to get a vacuum job if you plan to boost again. or you could do what i did when i started getting boost problems, upgrade to single. Of course that costed me around 10k so far to do it right.
#7
Senior Member
Thread Starter
iTrader: (1)
Join Date: May 2002
Location: Ca
Posts: 387
Likes: 0
Received 0 Likes
on
0 Posts
that's what I'm planning to do...I'm planning to go single turbo by this coming summer or maybe BNR stage 3...But I haven't decided yet..I'm also really concern about passing smog in CA..It's a pain in the ***...Yeah, there seems like a hissing sound...Hopefully it's just a vacuum leak...
thanks,
thien phan
thanks,
thien phan