Automotive Forums .com - the leading automotive community online! Automotive Forums .com - the leading automotive community online!
Automotive Forums .com - the leading automotive community online! 
-
Latest | 0 Rplys
Go Back   Automotive Forums .com Car Chat > Mitsubishi > Galant
Reply Show Printable Version Show Printable Version | Email this Page Email this Page | Subscription Subscribe to this Thread
 
Thread Tools
Old 10-24-2003, 12:38 PM   #1
zyman
AF Newbie
 
Join Date: Oct 2003
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Angry bad vibration 4G63 engine

help, iv'e got bad engine vibration @ 1800 - 2500 RPM
the cam belt has been changed afew months ago.
i got so p******D off i dropped another engine in.
guess what? same problem. could it be transmission?
any ideas?.
zyman is offline   Reply With Quote
Old 10-29-2003, 02:01 AM   #2
BluFalcon
AF Newbie
 
BluFalcon's Avatar
 
Join Date: Aug 2002
Posts: 14
Thanks: 0
Thanked 0 Times in 0 Posts
Send a message via AIM to BluFalcon
Re: bad vibration 4G63 engine

Quote:
Originally Posted by zyman
help, iv'e got bad engine vibration @ 1800 - 2500 RPM
the cam belt has been changed afew months ago.
i got so p******D off i dropped another engine in.
guess what? same problem. could it be transmission?
any ideas?.
The 4G63 has two timing belts, the main one drivn off the crank turns the oil pump/balance shaft, and the cams in the head. The second belt is also driven off the crank sprocket and it turns another balance shaft. Your vibration could be caused by one of the following two things. 1. The balance shaft belt snapped, and the the engine is vibrating because the other balance shaft is still spinning, without the other shaft to counteract the motion of the shaft. 2. The oil pump balance shaft is out of phase. It's possible to align all timing marks correctly, but still have the oil pump shaft be out of phase. the only way to make sure the pump is aligned correctly before installing the main timing belt is to remove a plug and verify it's position. there is a very helpful guide to removing and installing a timing belt in a 4G63 engine at http://www.vfaq.com in the "engine" section. Hope this helps.
__________________
90 Talon TSi/AWD "Project"
99 Galant GTZ "Driver"
http://www.dfwdsm.org
BluFalcon is offline   Reply With Quote
Old 11-29-2003, 09:42 AM   #3
Akidosigh1
AF Newbie
 
Join Date: Nov 2003
Location: Forestville, Maryland
Posts: 17
Thanks: 0
Thanked 0 Times in 0 Posts
just remove your balance shafts all together and be happy... that way you wn't have to worry about the balance shaft belt breaking in the future inturn taking out the timing belt. If it happens you will need another new engine or at least a new head
Akidosigh1 is offline   Reply With Quote
Old 12-07-2003, 06:33 PM   #4
gmech
AF Newbie
 
Join Date: Dec 2003
Location: McHenry, Illinois
Posts: 26
Thanks: 0
Thanked 0 Times in 0 Posts
Re: bad vibration 4G63 engine

Quote:
Originally Posted by zyman
help, iv'e got bad engine vibration @ 1800 - 2500 RPM
the cam belt has been changed afew months ago.
i got so p******D off i dropped another engine in.
guess what? same problem. could it be transmission?
any ideas?.
zyman, not sure if you ever solved the vibration problem, but it does sounds like a shaft timing problem. In case you having already, suggest you also verify the following:

1. visual inspection of the motor mounts.
2. ensure the spark plug wires are correctly installed. I've seen instances where reversed plug wires caused a simliar vibration.
__________________
gmech is offline   Reply With Quote
Old 01-15-2004, 11:58 PM   #5
vol96
AF Newbie
 
Join Date: Jan 2004
Location: Troy, Michigan
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Re: bad vibration 4G63 engine

Do you get the vibration when standing still and engine @1800-2500rpm? Or are you driving the car? If driving, what gear are you in or do you have at?
vol96 is offline   Reply With Quote
Old 01-16-2004, 03:21 AM   #6
zyman
AF Newbie
Thread starter
 
Join Date: Oct 2003
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Re: bad vibration 4G63 engine

thanks everyone who helped me on my problem,
it was balance shaft timing. so i took them out and binned them. car runs nice.
zyman.
zyman is offline   Reply With Quote
Old 01-16-2004, 10:44 AM   #7
gmech
AF Newbie
 
Join Date: Dec 2003
Location: McHenry, Illinois
Posts: 26
Thanks: 0
Thanked 0 Times in 0 Posts
Re: Re: bad vibration 4G63 engine

Quote:
Originally Posted by zyman
thanks everyone who helped me on my problem,
it was balance shaft timing. so i took them out and binned them. car runs nice.
zyman.

glad to hear things are back to norm Zy! I know things like that can drive you . It's amazing to me the time, effort, and costs the 4G63 engineers went in designing something that seems to cause more problems than it resolves -- but nothing of course a little reverse engineering can't solve .

good job and thanks for following up on this post!
__________________
gmech is offline   Reply With Quote
 
Similar Threads
Thread Thread Starter Forum Replies Last Post
Engine noise and vibration jpar1983 Intrigue 10 12-28-2010 07:33 AM
99 5sfe - weird brake vibration and engine vibration zorobabel Camry/Camry Hybrid/Vista 25 08-13-2009 10:02 AM
99 GA SE Engine Mount - Bad Vibration at High Speeds drstroud Grand AM 6 07-14-2005 09:32 PM
can 4g63 engine (from evoIII) fit in Gto chasis? yaaiyaai 3000GT/Stealth 14 11-26-2003 09:25 AM
Lancer 4G63 engine where to Find it? i Dunno Nig_Row Lancer 3 11-25-2003 03:42 AM

Reply

POST REPLY TO THIS THREAD

Go Back   Automotive Forums .com Car Chat > Mitsubishi > Galant

Thread Tools

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



All times are GMT -5. The time now is 03:00 AM.

Community Participation Guidelines | How to use your User Control Panel

Powered by: vBulletin | Copyright Jelsoft Enterprises Ltd.
 
 
no new posts