Knocking engine replacement planning - Hyundai Forums : Hyundai Forum
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post #1 of 8 (permalink) Old 02-17-2017, 01:31 PM Thread Starter
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Knocking engine replacement planning

I got a Knocking Engine I'm planning to replace in my Elantra '09. Dealer said to ignore it as long as the noise got lower once the engine is at operating temp. Well, 20kmiles later... it's getting worse. Sounds like someone hitting the engine block with a hammer. Still pulls strong and no oil consumption noticed, but really annoying and would most likely be unsellable as it is now.

I don't think "open surgery" would be cost effective at this point and I'm more looking into dropping a lower mileage, salvage yard engine in it instead.

(Also, here in Canada, we didn't get the 10yr/100kmiles powertrain warranty... just 5yr/60kmiles)

Service manual says the engine cradle needs to be dropped for this, and the A/C purged/refilled... and that makes the swap more difficult/costlier than it should, IMO. (A/C refill in Canada is Certified Shop only, and comes with heavy price tag) Has someone here experienced or seen info about doing it from the top, just moving the A/C pump away from engine?

Thanks for any ideas
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post #2 of 8 (permalink) Old 02-21-2017, 08:15 AM
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Sure, you could, but also you must remove the hood/bonnet.

In order to accomplish it you may need to remove the radiator fan as well. Keep in mind the engine gets wider down towards the bottom.
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post #3 of 8 (permalink) Old 02-22-2017, 12:11 PM Thread Starter
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Originally Posted by 2009GLS View Post
Sure, you could, but also you must remove the hood/bonnet.

In order to accomplish it you may need to remove the radiator fan as well. Keep in mind the engine gets wider down towards the bottom.
Removing the hood and fan isn't a problem VS opening the A/C system.

I'd be more concerned about having enough play side to side to separate the engine and transmission.

I'm also waiting for an "all inclusive" quote to decide if that something worth doing myself @my mechanic friend's garage...

Thanks
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post #4 of 8 (permalink) Old 02-23-2017, 08:18 AM
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Just a thought.

Do you have any paper work trail of the problem with Hyundai?
How far are you past the warranty?

I would take it to them and see if they still somehow can cover it. At least partially. That is what happened to a friend of mine - she was past warranty, but as a good will Hyundai covered 95% of cost.
It should work, especially if you are the first owner and have a good history of service.
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post #5 of 8 (permalink) Old 02-23-2017, 10:02 AM Thread Starter
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I'm not expecting that much from Hyundai. Car is 30 months past warranty. Like I said, they are not as generous for Canadian owners as in USA.

I did 50% of the maintenance myself. Got the paper trail about the filters I always bought from them, but that's it. Other 50% was done at the dealer, but always minimum needed. Never bought their costly inspections.

They checked for the noise @85000km before replacing the T-Belt, but their words were that I got a noisy engine, and it would still last to 200000km. At that time, the knock did stopped after 5-10 mins driving.

I'm more worried about not being able to sell it honestly to someone else in 2 yrs. Also, I wouldn't like having my wife calling me on the side of the road, with a seized engine that got a new "inspection hole" on it ;-)

I'm figuring a used installed engine would still be less than 6 months of new car payments, and we'd most likely get screwed selling it as-is in the deal in its current state.
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post #6 of 8 (permalink) Old 03-13-2017, 09:50 AM Thread Starter
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Job Done

I can now confirm it can be done from the top, without opening the AC System, and without disconnecting the steering rack.

Removing the catalyst. fan ass'y, alternator and it's mount, oil filter and water pump pulley were the key. Engine/Auto Trans came out without much issue.

Only surprise we had was a rusted through oil pan, otherwise new engine started quite easily.

Thanks for the tips.
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Last edited by MarioT; 03-13-2017 at 09:57 AM.
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post #7 of 8 (permalink) Old 03-13-2017, 10:01 PM
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Originally Posted by MarioT View Post
...Dealer said to ignore it as long as the noise got lower once the engine is at operating temp...
I think I would find a new dealer...
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post #8 of 8 (permalink) Old 04-09-2017, 11:51 AM Thread Starter
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Teardown of the old engine completed...

Verdict? Just have a look at that those PICs, says everything I think. Shame it all happened in just 65kmiles. Followed 3000 miles oil changes with oem filters.





And this is how it sounded if you're curious... since the other thread I posted it has been moved outside the HD subforum.

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