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93' Eclipse motor trouble


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hazard364
New User

Jan 12, 2013, 1:27 PM

Post #1 of 5 (1847 views)
93' Eclipse motor trouble Sign In

1993
Mitsubishi
Eclipse GS
2.0
107k

In short, i'm mechanically inclined to fix this, but my knowledge of cars is changing oil, filters, and plugs.

I recently put a 92' spare motor in an eclipse we obtained through a friend.
Putting it in went fairly smooth.
Now when we started it, it has a really rough rattle/vibration. It CAN drive, but with how loud the vibration is its hardly bearable. It also has a slight loss of power.

http://www.youtube.com/watch?v=Quc6NHzm3tM

Attached is the motor idling to give you an idea on the sound it is making.
I have replaced the plugs, wires, cap n rotor.


Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Jan 12, 2013, 1:40 PM

Post #2 of 5 (1834 views)
Re: 93' Eclipse motor trouble Sign In

You should connect up an oil pressure gauge and see what the pressure is. Sounds like the lash adjusters aren't pumped up or full of air.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on Jan 12, 2013, 1:54 PM)


Sidom
Veteran / Moderator
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Jan 12, 2013, 1:55 PM

Post #3 of 5 (1823 views)
Re: 93' Eclipse motor trouble Sign In

Also you may want to pull the timing cover and make sure you don't have the balance shaft 180° out.....That would give you a severe vibration right off idle.......It's possible to line up all the timing marks and get the shaft 180° out.

But I agree with DS.....sounds like you also have some pressure issues going on there....


I don't get the "short" thing????? Cash?????


hazard364
New User

Jan 12, 2013, 2:50 PM

Post #4 of 5 (1808 views)
Re: 93' Eclipse motor trouble Sign In

I'll give it a go on the oil pressure gauge.

When you put it up to 2-3k rpm's the shaking speeds up but feels a little less rough.

In short, or the jist of it.


Sidom
Veteran / Moderator
Sidom profile image

Jan 12, 2013, 3:39 PM

Post #5 of 5 (1793 views)
Re: 93' Eclipse motor trouble Sign In

If you've had the timing belt off or even if you didn't......since its a new motor, I would check that balance shaft.....If the balance shaft is 180 out, the worst vibration is between 1000 & 2000 and then gets better...

This is an interference engine.......If you didn't put a new timing belt & pulleys on it you are taking a huge risk.....at the bare minimum, it needs a new timing belt....

Guess I need to check my glas$es.....read that a couple times & saw "I'm short"............hmmmmmm


(This post was edited by Sidom on Jan 12, 2013, 3:39 PM)






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