Welcome to the North American Subaru Impreza Owners Club Tuesday May 26, 2015
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Normally Aspirated Powertrain

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 12-06-2008, 05:37 PM   #1
GraimeG
Scooby Newbie
 
Member#: 64865
Join Date: Jun 2004
Vehicle:
1993 Impreza L AWD

Default Power from general maintenance

I have a 1993 Subaru Impreza L AWD coming close to 180,000 miles.
Recently on a TopGear Episode, they said they did a "Standard tune up" on a 7 year old Renault van, and gained 40hp at the wheels... (This was with new fuel injectors, air filter, and intake manifold - so they said)
While this seems rather ambitious to me, what standard maintenance can I perform on the Subie to add back lost power from years of service?

I'm really new at this and haven't performed any serious work on the car before, even though it has been owned by my family for 16 years. Any DIY or walk-throughs for said maintenance steps would be appreciated as well!
* Registered users of the site do not see these ads.
GraimeG is online now   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 12-06-2008, 09:49 PM   #2
watchunglava
Scooby Specialist
 
Member#: 168862
Join Date: Jan 2008
Chapter/Region: NESIC
Location: Portland Maine
Vehicle:
2007 ej253n/a 5speed
Red Sox Nation Lifer

Default

seafoam!!!!!! air filter, spark plugs , oil change
watchunglava is offline   Reply With Quote
Old 12-07-2008, 02:36 AM   #3
GraimeG
Scooby Newbie
 
Member#: 64865
Join Date: Jun 2004
Vehicle:
1993 Impreza L AWD

Default

What about fuel injectors? Pulleys?
GraimeG is online now   Reply With Quote
Old 12-07-2008, 02:42 AM   #4
watchunglava
Scooby Specialist
 
Member#: 168862
Join Date: Jan 2008
Chapter/Region: NESIC
Location: Portland Maine
Vehicle:
2007 ej253n/a 5speed
Red Sox Nation Lifer

Default

http://www.amsoil.com/storefront/api.aspx for your injectors. but definatly change the fuel fliter .


the seafoam though wow hook it up!!!!! 193k hell yea!!!!!!!!
watchunglava is offline   Reply With Quote
Old 12-07-2008, 02:44 AM   #5
watchunglava
Scooby Specialist
 
Member#: 168862
Join Date: Jan 2008
Chapter/Region: NESIC
Location: Portland Maine
Vehicle:
2007 ej253n/a 5speed
Red Sox Nation Lifer

Default

there is so much to a service like that lol it takes me a week to tune my car up and i do it like 3 times a year .
watchunglava is offline   Reply With Quote
Old 12-07-2008, 03:43 AM   #6
GraimeG
Scooby Newbie
 
Member#: 64865
Join Date: Jun 2004
Vehicle:
1993 Impreza L AWD

Default

seafoam? what is that exactly?
GraimeG is online now   Reply With Quote
Old 12-07-2008, 02:32 PM   #7
Eyedoc Orlando
Scooby Newbie
 
Member#: 146216
Join Date: Apr 2007
Chapter/Region: South East
Location: Birmingham, AL
Vehicle:
2007 Impreza 2.5i SE
Newport Blue Metallic

Default

I would do the following in this order to get it back in shape:
1. Compression test all the cylinders
2. Remove carbon from the intake with throttle body cleaner with engine running
3. Remove carbon from the cylinders with seafoam poured through a vacuum hose. PCV works
4. Remove and send the injectors off to be professionally ultrasonically cleaned and tested.
5. Change all fluids. Coolant, Brake, Steering, Engine Oil, Transmission, Differential
6. Install all new brake rotors and pads, check each caliper for wear and play.
7. New spark plugs, wires, coils if necessary. New distributor cap.
8. New PCV valve
9. Install new O2 sensor if it has one (not sure on a 93)
Optional 10. You may elect to early change the timing belt, tensioner, water pump if it needs it.

If your electrical system is working well, the compression test passes, and the engine is fully clean with new oil - then you're getting all the power it will muster.

I would also check the oil analysis on the new oil after 3000 for any signs of a coolant leak or problem.
Eyedoc Orlando is offline   Reply With Quote
Old 12-07-2008, 02:47 PM   #8
watchunglava
Scooby Specialist
 
Member#: 168862
Join Date: Jan 2008
Chapter/Region: NESIC
Location: Portland Maine
Vehicle:
2007 ej253n/a 5speed
Red Sox Nation Lifer

Default

seafoam is an engine treatment. well known for its quality. and usefulness. its this stuff from back in the day. my buddy's dad would allways use it on their boat in the hamptons . but it works with auto engines too . its real good stuff and just what the dr. ordered for your high milage motor.

you have some dirty work ahead of you for sure. but nothing too hard. i love tuning up old cars . its going to feel awesome when your done.

compression tests, vaccum tests ,coolant system pressure test, many tests you can run. first things first the last poster is right , hook up throttle body cleaner then seafoam. i would even seafoam the block. the directions are on the can. yes definatly use the pcv line to sea foam the combustion chambers .
watchunglava is offline   Reply With Quote
Old 12-07-2008, 02:47 PM   #9
watchunglava
Scooby Specialist
 
Member#: 168862
Join Date: Jan 2008
Chapter/Region: NESIC
Location: Portland Maine
Vehicle:
2007 ej253n/a 5speed
Red Sox Nation Lifer

Default

watchunglava is offline   Reply With Quote
Old 12-07-2008, 02:52 PM   #10
EdHilario
Scooby Specialist
 
Member#: 137398
Join Date: Jan 2007
Chapter/Region: E. Canada
Location: Toronto
Vehicle:
2004 Impreza 2.5RS
Platinum Silver Metallic

Default

You can also try Motul Fuel System Clean and Engine Clean.
EdHilario is offline   Reply With Quote
Old 12-07-2008, 02:56 PM   #11
Russ45
Scooby Newbie
 
Member#: 170237
Join Date: Jan 2008
Chapter/Region: South East
Location: OT
Vehicle:
Hey, don't be a
dick, bro..

Default

Quote:
Originally Posted by watchunglava View Post
seafoam!!!!!! air filter, spark plugs , oil change
This!

Seafoam is amazing stuff. My buddy has a little 1992 or so toyota pickup that has been seafoamed religiously every 10,000mi since his dad first bought it. It runs almost better than my car.

Also switching to a high quality synthetic oil has to be worth a few hp?
Russ45 is offline   Reply With Quote
Old 12-07-2008, 04:12 PM   #12
GraimeG
Scooby Newbie
 
Member#: 64865
Join Date: Jun 2004
Vehicle:
1993 Impreza L AWD

Default

Quote:
Originally Posted by Eyedoc Orlando View Post
4. Remove and send the injectors off to be professionally ultrasonically cleaned and tested.
Would it be easier/cheaper to buy new injectors?
GraimeG is online now   Reply With Quote
Old 12-08-2008, 03:06 PM   #13
Rocketjones
Scooby Newbie
 
Member#: 142754
Join Date: Mar 2007
Chapter/Region: MAIC
Location: Johnstown, Pa
Vehicle:
2005 RS Wagon

Default

Clean the stock grounding points and do Big 3.
Rocketjones is offline   Reply With Quote
Old 12-08-2008, 05:48 PM   #14
GraimeG
Scooby Newbie
 
Member#: 64865
Join Date: Jun 2004
Vehicle:
1993 Impreza L AWD

Default

Thanks for the help guys! However I'm not used to the lingo yet, what is "Big 3"?
GraimeG is online now   Reply With Quote
Old 12-08-2008, 06:11 PM   #15
Reebis
Scooby Newbie
 
Member#: 126157
Join Date: Sep 2006
Chapter/Region: MWSOC
Location: Plainfield, IL
Vehicle:
'01 2.5RS Coupe
BRP

Default

Quote:
Originally Posted by dontcallitarex View Post
Also switching to a high quality synthetic oil has to be worth a few hp?
I would stay away from putting syn in a motor with that many miles. You'll most likely end up with nice coat of fresh, expensive synthetic on your driveway.
Reebis is offline   Reply With Quote
Old 12-08-2008, 06:28 PM   #16
yarrgh
Scooby Specialist
 
Member#: 80465
Join Date: Jan 2005
Chapter/Region: RMIC
Location: Aurora, CO
Vehicle:
2001 2.5RS
Black Diamond Pearl

Default

if you don't understand the lingo..SEARCH. there's a lot to learn out there, and most of it has been covered.
yarrgh is offline   Reply With Quote
Old 12-08-2008, 10:31 PM   #17
Back Road Runner
Scooby Guru
 
Member#: 60082
Join Date: Apr 2004
Chapter/Region: MWSOC
Location: Minnesota
Vehicle:
2004 Forester STI
Silver

Default

Back Road Runner is offline   Reply With Quote
Old 12-09-2008, 12:19 AM   #18
GraimeG
Scooby Newbie
 
Member#: 64865
Join Date: Jun 2004
Vehicle:
1993 Impreza L AWD

Default

Yeah, I'll search more. I did find tons of Big3 related threads both on this forum and others. Thanks again
GraimeG is online now   Reply With Quote
Old 12-10-2008, 08:45 PM   #19
dougfeature
Scooby Newbie
 
Member#: 196971
Join Date: Dec 2008
Chapter/Region: MWSOC
Location: between chicago and milwaukee
Vehicle:
2002 WRX
subaru blue

Default

some major parts store have a core charge on injectors....they send them to get cleaned and tested and then resold...ive had amazing results with the BG injector cleaner...you disconnect the fuel pump and block the return line...hook air pressure up to the tank...wow..
dougfeature is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Links to general maintenance tips for Subarus? jrork Newbies & FAQs 1 11-02-2007 04:51 PM
General Maintenance Terms clemsonteg Newbies & FAQs 5 08-24-2007 10:30 PM
BG5 2.5 Auto tranny general maintenence K-A-O-S Legacy Forum 19 06-07-2006 09:03 PM
General Maintenence 02 WRX TheShadowWRX Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 5 02-10-2004 12:10 AM
General maintenance (What do you do to your car??) Karl Newbies & FAQs 11 12-11-2001 02:45 PM


All times are GMT -4. The time now is 03:32 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2015 Axivo Inc.
Copyright ©1999 - 2015, North American Subaru Impreza Owners Club, Inc.