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2G need timing help 4g63t

Posted by Derek Goodreau, May 10, 2015

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  1. Derek Goodreau

    Derek Goodreau Proven Member

    163
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    Joined Jun 5, 2014
    North Adams, Massachusetts
    i just discovered today that my timing is off by one tooth, is there anyone out there that can provide me with a descriptive how to, to adjust the timing properly. i know how everything works ive just never done this before and i dont want to mess anything up.
     
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  2. o0GuitarKid0o

    o0GuitarKid0o Proven Member

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    108
    Joined Dec 12, 2013
    Winnipeg ,MB, MB, Canada
    Remove the driver side tire and splash gards

    You have to remove the driver side motor mount jack up the engine with a piece of wood so you don't dent your oil pan.

    remove all the pulleys (water pump pulley is easier to remove with the belt still on) after all the pulleys are off includeing the harmonic balancer you remove the power steering pump ,

    After all that you jack up the engine till you get enough room to wrench around then remove the timing cover upper an lower

    now this is were the magic happens and you figure out WHY you jumped a tooth most likly a bad tensioner I'd reccomed the tools to do this especially the tensioner tool you can make one with the battery post clamp

    I'd replace everything all idlers , tensioner pully's and tensioner arm there s a vfaq that goes through all of this way better than I could explain oh and replace all belts and check out all your seals includeing cams and crank seals ,

    It took me 8hrs with help to do this job but replace every darn thing you can! I'm at the 2k mark on my belt job I'd recommend rock auto for parts! Hope everything works out and take your time! And go through the procedure till you can resight it in your sleep and when you have zero questions I have no problem awnsering questions with this procedure although I'm sure alot of ppl can help you and give you tips and tricks, like the Wisemen on here are great

    Get a torque wrench and some office supplys like the paper clip clamps to hold the belt on the cams and buy a manual I used a dealer manual but I'm sure Haynes or clintons (I think it's spelled like that) are good to
     
    Last edited: May 10, 2015

    Street Build 751  7

    1991 Plymouth Laser RS Turbo
    fwd · automatic · 1G DSM
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  3. chardbox03

    chardbox03 Proven Member

    57
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    Joined Feb 26, 2010
    Lake Orion, Michigan
    here is the write up on how to properly time the 4g63 engine. It just takes patience and attention to detail. Do it once and do it correctly. Also this would be a great time to replace the water pump and do any other preventative maintenance on your car!!! Good luck!!!
    http://www.vfaq.com/mods/timingbelt-2G.html
     

    322  0

    1990 Mitsubishi Eclipse GSX
    · 1G DSM
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  4. o0GuitarKid0o

    o0GuitarKid0o Proven Member

    757
    108
    Joined Dec 12, 2013
    Winnipeg ,MB, MB, Canada
    Prevenenative goes a long way .water pump would be ideal to replace mine was fine but I replaced it anyways same with my tensioner rock auto Is the place to buy if you have to buy any other brand other than mitshubushi I'd reccomed gates for sure!
     

    Street Build 751  7

    1991 Plymouth Laser RS Turbo
    fwd · automatic · 1G DSM
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  5. Derek Goodreau

    Derek Goodreau Proven Member

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    Joined Jun 5, 2014
    North Adams, Massachusetts
    well the thing is, the guy i bought this off of said that he just replaced the timing belt, water pump, pulleys...the whole 9...idk if he didnt put the belt on right or something. but i dont want to have to replace all this stuff again. i can tell its all new so...could i just adjust the timing to the marks and call it a day?
     
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  6. o0GuitarKid0o

    o0GuitarKid0o Proven Member

    757
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    Joined Dec 12, 2013
    Winnipeg ,MB, MB, Canada
    Well some thing messed up to cause the crank to jump a tooth , either he didn't do it right or something failed.

    BTW when I removed my old pully's they looked like new but when you spun them you could tell they were bad

    But btw yes you can just re do the belt and call her a day but id check everthing to be sure nothing is missed just follow the Vfaq like your replaceing the belt but everything has to be followed like your replaceing everything if that makes sense LOL
     

    Street Build 751  7

    1991 Plymouth Laser RS Turbo
    fwd · automatic · 1G DSM
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  7. Derek Goodreau

    Derek Goodreau Proven Member

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    Joined Jun 5, 2014
    North Adams, Massachusetts
    yes that makes since thanks for the input.
     
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  8. SrKegler

    SrKegler Proven Member

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    Joined Feb 29, 2004
    Daytona Beach, Florida
    Before you tear everything apart, pull the plugs and rotate the engine with an extension in #1 plug hole. Go slow when the dowel pins are close to the top and stop when the extension quits moving up. Then check the marks.

    A bad harmonic balancer can slip and give the impression the timing is off. If the piston has stopped moving up and the cam gear marks are aligned then mechanical timing is correct.
     
  9. jimsgsx

    jimsgsx Proven Member

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    Joined Oct 21, 2013
    toppenish, Washington
    +1 on the paperclip clamps.
     

    Street Build 3K  0

    1998 Mitsubishi Eclipse GSX
    manual · 2G DSM
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  10. Derek Goodreau

    Derek Goodreau Proven Member

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    Joined Jun 5, 2014
    North Adams, Massachusetts
    alright i will do that
     
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  11. luv2rallye

    luv2rallye DSM Wiseman

    7,610
    620
    Joined Jun 7, 2003
    Minneapolis, Minnesota
    Important note from VFAQ (step 33): THE EXHAUST CAMSHAFT SPROCKET MAY ROTATE IN THE COUNTERCLOCKWISE DIRECTION AS THE BELT IS TENSIONED. THIS SHOULD BE CONSIDERED WHEN INSTALLING THE TIMING BELT. If the camshaft sprocket timing marks don't line up after tensioning the belt with all the other timing marks lined up, loosen the belt and retension it, but try rotating the exhaust sprocket slightly clockwise (1 tooth off) first.

    The cam sprocket marks must not only align with each other but also with the head surface. When all sprockets are on their marks, it helps to place a straight edge horizontally across the center of the cam shaft sprocket attaching bolts. Then you can just align the cam sprocket marks with the ruler. http://www.dsmtuners.com/threads/i-think-my-timing-is-off-a-tooth.500744/#post-153571025

    My full TB installation tips: http://www.dsmtuners.com/threads/timing-belt-tensioning-tips-for-4g63-turbo.214625/
     
    Last edited: Mar 19, 2016

    3K  0

    1999 Mitsubishi Eclipse GST
    14.200 @ 95.000 · 2G DSM
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  12. Derek Goodreau

    Derek Goodreau Proven Member

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    North Adams, Massachusetts
    ok thanks for the heads up.
     
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  13. Mauispyder

    Mauispyder Proven Member

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    Kula, Hawaii
    Google - Kim Steele timing belt- for another description of the process. Take a good look at the hydraulic tensioner( might not have been replaced). There's some reason the timing was off . Luvtorallye makes a great point re another reason for timing to be off. Extreme PSI and other vendors on this site sell tools for timing jobs, including the two prong tensioner tool and the gear wedge that hold your cam gears still. Check the harmonic balancer for rubber rot or separation. And don't spin your crank with the belt off. Took me about 30 hours, I'm slow! Good luck!
     

    1K  2

    1999 Mitsubishi Eclipse Spyder GST
    fwd · manual · 2G DSM
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  14. Derek Goodreau

    Derek Goodreau Proven Member

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    Joined Jun 5, 2014
    North Adams, Massachusetts
    cant i rotate the cams if the crank is 90 degrees past TDC so there's no interference?
     
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  15. o0GuitarKid0o

    o0GuitarKid0o Proven Member

    757
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    Joined Dec 12, 2013
    Winnipeg ,MB, MB, Canada
    If it's only a tooth off like you described just literally line the timing marks up and call it a day don't rotate it a bunch of times till the belts on and ready to rock

    If you feel alot of resistance like the engines not rotating then STOP

    Id also make sure your oil pump is in phase with the balance shaft with the screw driver trick ( the bOlt you have to remove for this is behind the engine near the axle but above the oil pan by the ac ) . An take your time! If it takes a week than it takes a week if it takes a day good job but check everything
     

    Street Build 751  7

    1991 Plymouth Laser RS Turbo
    fwd · automatic · 1G DSM
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  16. Derek Goodreau

    Derek Goodreau Proven Member

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    Joined Jun 5, 2014
    North Adams, Massachusetts
    ok will do
     
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  17. Derek Goodreau

    Derek Goodreau Proven Member

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    Joined Jun 5, 2014
    North Adams, Massachusetts
    ok just went out and set crank to #1 TDC and this is the result.
     

    Attached Files:

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  18. Schmegma

    Schmegma Proven Member

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    arvada, Colorado
    something caused the timing to jump - teardown will be required. Possibly the balance shaft belt or another belt or something caused the timing to jump...

    Unfortunately you are gonna have to take it apart to verify the failure. Good luck!
     
  19. Derek Goodreau

    Derek Goodreau Proven Member

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    Joined Jun 5, 2014
    North Adams, Massachusetts
    yeah i know it, this will be my first timing job...LOL it's going to suck but thankfully i have a buddy that's going to help me
     
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  20. Mauispyder

    Mauispyder Proven Member

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    Kula, Hawaii
    I suspect you're right re crank at 90deg. When I did mine I didn't even understand which pistons were where (except #1 at TDC) at what crank angles. So when I moved my crank with the timing belt off I freaked out for about a week and then Joined DSM Tuners!
     

    1K  2

    1999 Mitsubishi Eclipse Spyder GST
    fwd · manual · 2G DSM
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    the heeat likes this.
  21. Derek Goodreau

    Derek Goodreau Proven Member

    163
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    Joined Jun 5, 2014
    North Adams, Massachusetts
    yeah i thought so because if its at 90 degrees none of the pistons are at TDC
     
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  22. 1990TSIAWDTALON

    1990TSIAWDTALON Moderator

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    Independence, Kansas
    Don't get overwhelmed, once you get into this, it isn't all that bad. It does look like the exhaust is off, I'm surprised it ran, probably not real good. Follow the instructions given, and the timing tools help a lot if you can get them. If it gets to you, just ask some more with your pictures and we can walk you through.
     

    Street Build 4K  29

    1992 Eagle Talon TSi AWD
    14.74 @ 117.04 · 1G DSM

    1K  14

    1990 Mitsubishi Eclipse GSX
    awd · manual · 1G DSM

    749  18

    1967 Chevrolet Camaro RS
    rwd · automatic · Misc Vehicles

    Street Build 1K  7

    1998 Eagle Talon TSi
    fwd · manual · 2G DSM

    Street Build 6K  13  25

    1990 Eagle Talon TSi AWD
    13.620 @ 108.460 · 1G DSM
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  23. Derek Goodreau

    Derek Goodreau Proven Member

    163
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    Joined Jun 5, 2014
    North Adams, Massachusetts
    Yeah will do, Like i said i am also having a good friend of mine help me who currently has alot of knowledge in this kind of work. So i should be alright. when all is good I'm going to post another log with her running better.
     
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