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Car repair question
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kjell1979 Original Post: Apr 27 '05,  10:46 am           Reply
Reviews written: 341
Member since: Jul 30, 2001

Post: 15955
Car repair question

I don't know if any of the regulars here are well versed in car repair, but I have a question.

The timing belt on my wife's Daewoo Lanos broke on Friday. I was actually driving it at the time. I stopped at a red light, and when it turned green I heard a pop and the car seemed to power down before I could move. Anyway, we were told that since the car was running when the timing belt broke, it probably bent the engine valves, which would require more money to fix than what the car was worth before it broke down. The big thing is that this is all assumption and they haven't actually gone in to check the valves. So my question is, does this sound right? We got two opinions on the matter, one from a 3rd party mechanic, the other from the dealership mechanic, both of which I don't entirely trust. Any other suggestions on the matter? Given what we do know, it seems best to give the car to my wife's dad for him to fix up and use if he can and just get a new car.

     
tch7 Posted: Apr 27 '05,  8:50 pm (Updated: Apr 27 '05,  8:56 pm)           Reply
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moderator in Hotels & Travel
Post: 15999
RE: Car repair question

Edit: Bob provided a much better answer.

I'd take the opportunity to get a better car even if your engine is fine...

     
pvreditor Posted: Apr 27 '05,  8:50 pm (Updated: Apr 28 '05,  6:24 am)           Reply
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Member since: May 31, 2002

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Post: 16000
RE: Car repair question

With respect to broken timing belts, there are two types of engines: interference engines and non-interference engines. As you might surmise, interference engines have pistons that will crash into the valves if the timing belt breaks and this can cause a lot of damage. It will quite likely cost more to fix an inexpensive car's engine than the car is worth.

If it's a non-interference engine, all you need is a tow to a competent garage and a new timing belt. This will typically cost from $200 to $500, depending on the car and the mechanic's rates. If you are a decent backyard mechanic and have a Chiltons or Haynes repair manual for the car (around $25), you can do the job for the cost of the parts... usually less than $50.

I've replaced timing belts many times on Audis, VWs, my Subaru wagon and even my old Dodge Colt, which was the only one that broke on me as I drove it. Thankfully, it was a non-interference engine and all I had to do was get the car towed home to replace the belt in the comfort of my garage.

If you heard an awful noise when your belt broke, you have an interference engine and it will cost a bundle to fix. If the engine died quietly, all you need is a good belt.

Does that help? Let me know if you have any other questions.

--Bob

     
kjell1979 Posted: Apr 28 '05,  7:00 am           Reply
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Member since: Jul 30, 2001

Post: 16007
RE: Car repair question

No that's a great explanation.

As for the "awful noise", I heard a grinding sound when I stopped at the light. I wouldn't call it an "awful" noise, but rather a suspcious one that I took note of. When the light turned green and I went to press the accelerator, that's when I heard a snap (not a loud one). The car then powered down quietly from what I remember. I did try and start it up again, but heard that same grinding, but that's easily explained since by then the timing belt was gone. But other than the grinding noise I heard when I stopped at the light, and the actual snap of the belt, those were the only two noises I noted. Certainly nothing else that sounded catastophic.

I'll have to confirm whether this was a interference or non-interference engine. Does it matter whether the car was moving when the belt broke, or simply whether the car was on?

     
pvreditor Posted: Apr 28 '05,  8:03 am           Reply
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moderator in Cars, Musical Equipment, Home & Garden
Post: 16011
RE: Car repair question

It doesn't matter if the car was moving at the time the belt broke; it's all about the engine. I have never been in a car with an interference engine when the belt broke but I would expect a massive lurch and sickening metallic BANG from the engine. What you describe doesn't sound anything like that so my tentative diagnosis is that you simply need a new belt. Timing belts break and are normal replacement items. Most usually last at least 60K miles, although my Dodge Colt timing belt broke at 57K.

Since you would have had to replace the belt anyway, the only problem here sounds like the inconvenience of being stranded and the cost of the tow. Now you have to decide if you want to spend the $200 to $500 for the belt replacement on this car. As Kenn (tch7) says, you might want to put it down on a better car. On the long shot that this is an interference engine, I'd write the car off. It could easily cost you $1,500 to $3,000, depending on the parts cost and the mechanic.

Good luck!

--Bob

     
mkaresh Posted: Apr 29 '05,  8:21 pm           Reply
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Member since: Oct 16, 1999

moderator in Cars
Post: 16160
RE: Car repair question

Sorry, dude, the Lanos has an interference engine. For a complete list of such engines, I found this site:

www.motorminute.com/Service/TimingBelts.pdf

I also read one owner report where a broken belt caused valve damage.

     
pvreditor Posted: Apr 30 '05,  2:50 pm           Reply
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moderator in Cars, Musical Equipment, Home & Garden
Post: 16200
RE: Car repair question

Thanks for finding that out, Michael!

--Bob

     
snakeman3867 Posted: Jan 25 '06,  1:22 am           Reply
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Member since: Jan 25, 2006

Post: 41421
fix ride

what is the reason why at my pipes on my pithfinder that water and oil comeing out and how can i fix it
thank you
snakeman3867

     
pvreditor Posted: Jan 25 '06,  6:01 am           Reply
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Member since: May 31, 2002

moderator in Cars, Musical Equipment, Home & Garden
Post: 41447
RE: fix ride

Quote: snakeman3867
what is the reason why at my pipes on my pithfinder that water and oil comeing out and how can i fix it

"pithfinder"?? That sounds like a tool used to locate rotten trees...

It is normal for some water to drip out of the tailpipe when a car is warming up. Most of the exhaust is water vapor, which condenses on the cold metal of the exhaust system and some drips out the tailpipe. As the exhaust system warms up, the water soon stays in vapor form all the way through.

In a similar way, a bit of oil can get by the valves and pistons, settling into the exhaust system. Anything more than a very occasional drip is an indication of a problem. A car that "burns" a lot of oil will sometimes throw a mist of oil out the tailpipe -- you can check by holding a tissue a few inches from your tailpipe and seeing if it collects oily particles. If you do collect oil, this is a sign that the car needs some serious work, either piston rings or valve-stem seals... possibly both.

Good luck!

--Bob
     
oneorion77 Posted: Mar 11 '07,  11:42 am           Reply
Reviews written: 0
Member since: Mar 11, 2007

Post: 115492
the 2008 Mitsubishi Lancer GTS

Hi,
I was just wondering about the 2008 Mitsubishi Lancer and the engine it will be running. Will it be an interference motor, or the other I have seen you talk about here? Is it safe to buy an interference engine, provided that I keep on top of the regular maintenance of the vehicle, or is it really just a ticking time bomb that is just waiting to kick me in the nuts.....
Thank you.

     
pvreditor Posted: Mar 11 '07,  8:31 pm (Updated: Mar 12 '07,  9:34 am)           Reply
Reviews written: 427
Member since: May 31, 2002

moderator in Cars, Musical Equipment, Home & Garden
Post: 115563
RE: the 2008 Mitsubishi Lancer GTS

Quote: oneorion77
Hi,
I was just wondering about the 2008 Mitsubishi Lancer and the engine it will be running. Will it be an interference motor, or the other I have seen you talk about here? Is it safe to buy an interference engine, provided that I keep on top of the regular maintenance of the vehicle, or is it really just a ticking time bomb that is just waiting to kick me in the nuts.....
Thank you.

I can't say if the 2008 Lancer engine will be a good one but there is absolutely nothing wrong with interference engines. Yes, you have to stay on top of routine maintenance but replacing a timing belt at 60,000 or 100,000 miles is not that onerous for maintenance. Many (most? all?) Hondas have interference engines. All Porsches have them, as do VW/Audi and many other companies. No worries... just get your belt replaced at the right time.

--Bob
     
oneorion77 Posted: Mar 12 '07,  7:53 am           Reply
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Member since: Mar 11, 2007

Post: 115624
the 2008 mitsubishi lancer gts

Another question for you then.....I am thinking about buying this vehicle, and am curious about it in it's quality and all around performance and what not. I have heard almost all good things about it, and the bad mostly being the interior, which looks good to me. As far as the sound system in the sun and sound package upgrade, I know Rockford Fosgate is a well known company for kick butt car audio, but is it good enough for, say, a guy that already has a audio system that consists of two 10" JL Audio subs, a two year old Alpine head unit, and Focals in the doors, and two amps (phoenix gold and JL audio 250) running the head unit and subs? It'll be a compromise in kick, but I think an all around better quality sound perhaps.....

     
tch7 Posted: Mar 12 '07,  8:27 am           Reply
Reviews written: 112
Member since: Jan 19, 2003

moderator in Hotels & Travel
Post: 115630
RE: the 2008 mitsubishi lancer gts

Why don't you just go to the dealership and listen to the stereo? That's the only way you'll really be able to tell...

Acoustics in the vehicle and speaker placement are considerable factors in determining overall sound quality, so even if the speakers are kick-ass, they won't sound that way if it's a poor set-up. The only thing I'd say with some certainty before listening is that you're not going to have the same sort of bass levels.

     
biggie360 Posted: Jul 22 '07,  3:40 am           Reply
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Member since: Jul 22, 2007

Post: 140734
RE: Car repair question

The Deawoo Lanos has an interference engine. this means that the valves and piston operate in the same space, but at different times. the precision timing keeps them both from touching. If the timing is thrown off, which a timing belt breaking will obviously do, they hit. HARD. the valves get bent maybe 95% of the time when this happens. You are much better off just kissing that car goodbye.

     
scmrak Posted: Jul 22 '07,  8:13 am           Reply
Reviews written: 1954
Member since: Sep 27, 2000

Post: 140797
RE: Car repair question

bump

     
mrkstvns Posted: Jul 23 '07,  4:55 pm           Reply
Reviews written: 1798
Member since: Sep 9, 1999

Post: 141173
RE: Car repair question

Quote: biggie360
The Deawoo Lanos has an interference engine. this means that the valves and piston operate in the same space, but at different times. the precision timing keeps them both from touching. If the timing is thrown off, which a timing belt breaking will obviously do, they hit. HARD. the valves get bent maybe 95% of the time when this happens. You are much better off just kissing that car goodbye.


But, but, the Lanos is so damn UGLY. *MUST* I kiss it goodbye, or can I simply take off the tags and leave it behind a Safeway someplace...
     
whiffer Posted: Oct 29 '08,  2:15 pm           Reply
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Member since: Oct 29, 2008

Post: 207269
2001 Daewoo Lanos

My 2001 Daewoo Lanos........broken timing belt tension pulley....belt not broken, but damaged. Engine died....turns over ok, not seized. Any chance no valves bent?

     
pvreditor Posted: Oct 30 '08,  8:09 am (Updated: Oct 30 '08,  8:10 am)           Reply
Reviews written: 427
Member since: May 31, 2002

moderator in Cars, Musical Equipment, Home & Garden
Post: 207322
RE: 2001 Daewoo Lanos

Quote: whiffer
My 2001 Daewoo Lanos........broken timing belt tension pulley....belt not broken, but damaged. Engine died....turns over ok, not seized. Any chance no valves bent?

Gates, a manufacturer of replacement belts, lists the 1999-2002 1.6-liter Lanos engine as being an interference engine. If the camshaft slips in relation to the crankshaft, the pistons will hit the valves.

I had a car where the timing belt stripped but did not break. However, enough teeth were missing that the camshaft did not turn. Fortunately, it was not an interference engine and all I needed to do was replace the timing belt.

Since your 2001 Lanos has an interference engine, it's almost a certainty that the engine was damaged (valves bent) when the belt failed. You may have to decide if the car is worth having $1,500 of engine work.

Good luck!

--Bob
     
scmrak Posted: Oct 30 '08,  11:17 am           Reply
Reviews written: 1954
Member since: Sep 27, 2000

Post: 207339
RE: 2001 Daewoo Lanos

Quote: pvreditor
Gates, a manufacturer of replacement belts, lists the 1999-2002 1.6-liter Lanos engine as being an interference engine.
You can find that information or the timing belt information for another vehicle here.
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