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2004 Chevrolet Aveo has bent valves. Worth fixing? Advice?


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sweetcataxtrophe
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Jun 6, 2010, 5:52 PM

Post #1 of 6 (6228 views)
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2004 Chevrolet Aveo has bent valves. Worth fixing? Advice? Sign In

My 2004 Chevy Aveo's timing belt broke, bending the engine valves (a very common problem for '04-'07 Aveos). It stopped accelerating at the wheel. Mechanic is quoting me $2600 to replace the engine, but I don't want to do it if it's likely that I'll need other expensive repairs in the next couple of years, which leads me to a few questions:

1. If I replace the engine, is it likely that I'll have other expensive problems in the next few years? I realize you don't have a crystal ball, but I'm hoping someone here might have an idea of what I can expect based on any knowledge/experience with Aveos.

2. Are certain engines more reliable than others? What about better deals? I have no idea if the mechanic quoted me the price of a new engine or a used one, but from my understanding Chevy claims to have fixed the timing belt/valve problem in 2008, which makes me think I should look for a new(er) engine (For the record, I don't need a souped-up engine for performance--just one that won't break if something happens, like the timing belt snaps)

3. At this point, is it smarter to spend $3000 - $5000 on an older used Toyota or Honda (which are supposed to be more reliable) than replace the engine?

Additional details: I use my car primarily to commute. About once a week, I drive 70 miles each way to my boyfriend's and work meetings. My car has about 50,000 miles and no warranty. It's an automatic. I had other problems before it broke down, but I'm not sure how serious they are. The shifter sticks pretty badly when pulling out of park and, recently, the car started making a humming noise around 60 mph (wondering if that was from the timing belt?) plus creaking noises when making slow turns. I also replaced the battery, which seemed like a premature repair.


Hammer Time
Ultimate Carjunky / Moderator
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Jun 6, 2010, 7:06 PM

Post #2 of 6 (6218 views)
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Re: 2004 Chevrolet Aveo has bent valves. Worth fixing? Advice? [In reply to] Sign In

At that price it would have to be a used engine. What I don't understand is why they want to change the engine in the first place. I understand it will have a lot of bent valves but it should be completely repairable for a lot less money than that.
You car doesn't have any specific problems with the timing belt. Interference engines are very common and so is bending the valves when the belt breaks. the whole key is to change the belt when your supposed to and avoid the damage.




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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



(This post was edited by Hammer Time on Jun 6, 2010, 7:07 PM)


sweetcataxtrophe
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Jun 6, 2010, 7:13 PM

Post #3 of 6 (6210 views)
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Re: 2004 Chevrolet Aveo has bent valves. Worth fixing? Advice? [In reply to] Sign In


In Reply To
At that price it would have to be a used engine. What I don't understand is why they want to change the engine in the first place. I understand it will have a lot of bent valves but it should be completely repairable for a lot less money than that.
You car doesn't have any specific problems with the timing belt. Interference engines are very common and so is bending the valves when the belt breaks. the whole key is to change the belt when your supposed to and avoid the damage.


You mean replacing just the valves, or bending them back into shape? I've heard that repairing valves by bending them back creates a weak spot, which makes sense.


Hammer Time
Ultimate Carjunky / Moderator
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Jun 6, 2010, 7:18 PM

Post #4 of 6 (6207 views)
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Re: 2004 Chevrolet Aveo has bent valves. Worth fixing? Advice? [In reply to] Sign In

No, you can't bend valves back but replacing the bent ones would be cheaper than a whole engine and the rest of that engine should be in good shape.




~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



sweetcataxtrophe
New User

Jun 6, 2010, 7:33 PM

Post #5 of 6 (6202 views)
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Re: 2004 Chevrolet Aveo has bent valves. Worth fixing? Advice? [In reply to] Sign In


In Reply To
No, you can't bend valves back but replacing the bent ones would be cheaper than a whole engine and the rest of that engine should be in good shape.


I've been researching online and I keep reading that bent valves can also mean the cylinder head and pistons could be cracked, in which case it's better to replace the whole thing. Is that true? Thanks again for all your help!


Hammer Time
Ultimate Carjunky / Moderator
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Jun 6, 2010, 7:40 PM

Post #6 of 6 (6202 views)
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Re: 2004 Chevrolet Aveo has bent valves. Worth fixing? Advice? [In reply to] Sign In

Sure, other damage is possible but not likely. We routinely repair heads with bent valves from broken timing belts. It's not uncommon at all and rarely requires replacing the whole engine. You have to at least disassemble it to find out.




~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.





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