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Discussion Starter · #1 ·
Hello,

I have a 2000 Elantra with 139,000 miles. Normally runs very good but the other day the engine started a very loud clacking noise...I suspect that a lifter may have failed...it sounds like it is coming from the engine area...please note the particulars below:

1. Engine is making a VERY LOUD Clacking noise that is consistent with engine rpm.
2. Plugs are not fouled.
3. Oil is good.
4. Does not overheat, coolant level okay.
5. No visible leaks on/around engine
6. No smoke from tailpipe.
7. Engine can be started/stopped normally.
8. Same noise whether A/C is on or off.
9. CEL came on when problem started.

THis is the first time that I have had a Hyundai so I am not too sure about the nature of the vehicle, however I have worked on Hondas for quite a while.

Can anyone possibly give me any additional information/ideas on what may be causing this and if it is a lifter, how can they be changed? Will the mileage on this car make it worth fixing?

Thanks and I look forward to your relplies...

Robert.
 

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Hello RFuhler,

I am sorry that you are having this challenge.

Obviously, the first thing that comes to mind is to get the code checked. That will give better indication.

It sounds like a lifter as you say.

It may also be a frayed/fraying timing belt. You don't mention if this has been changed.

Regardless of what it may be, getting the code checked would seem to be a priority, particularly as whatever is giving you the issue has thrown a warning light.

I'm not sure a busted rocker or dodgy timing belt would do that....

Cheers,

Andrew
 

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Discussion Starter · #3 ·
Andrew,

Thanks for the quick reply.

I acquired the car used, so I am not sure about the timing belt. I may need to break down and buy a code reader - the car is in a location pretty far from anywhere that I can get it checked on-site.

I feel the same way about the timing belt/lifter idea. That thought came to mind because of the noise, but the quandry is that the plugs are all clean and each cylinder is firing normally. There is even a drop in rpm when each plug is disconnected...

This is an odd problem...if I find out what it is, I will post the solution.

Thanks, again - your comments have reinforced some of my thoughts!

Robert.
 

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For overhauling the hydraulic tappets, see my thread entitled something like 'Hydraulic tappets - can they be overhauled'. Yes they can; you may as well do it when you change the timing belt. Whether it is worth the cost of a new set of tappets is up to you; in the UK it was uneconomic to change them so I fixed the existing ones instead.
 

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Ed, interesting stuff. Hard for this yank to get the British slang though.

I'm afraid my problem is a lot worse than gunky tappets. My engine noise is clanking loud, not clicking. I only have the head off so far, so I don't know how bad it is.
 
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