Question about 1992 Geo Metro

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If timing belt breaks will valves be damaged?

Belt broke while driving have not got car home but plan to replace belt. willl valves be damaged? will it be obvious?

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Posted on Dec 13, 2014

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1 Answer

Timing belt diagram


not good thing timing belt break most of the time valves will get damaged you might be lucky my timing belt broke on my 1977 vega monza didnt damage valves but i had timing chain break on 98 lumina got valves damaged.

May 27, 2013 | Cars & Trucks

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This is a 4cyl diesel Beetle. The timing belt broke while driving. Dealer claims no damage done, replaced belt and car was driven for a few weeks. Began to start a bit sluggish, dealer said glowplugs...


my books show it as a interference engine in which case valve damage is most likely to occur
however if that was the case , it would be having a miss from the start and would not run 2 weeks before something happened
if a valve spring breaks there could be valve piston contact but it is doubtful if that would destroy the engine but again breaking valve springs is rather rare on diesel engines
the engine would not just quit but would rattle and bang it's head off then develope a big noisy miss from a hole in the piston
so I suspect a timing belt problem from when they removed/replaced the head after the glo-plug fix or a crank/cam shaft position sensor or wires ( possible faulty connections for the cam shaft)
I would suggest finding an accredited service center for a proper diagnosis and quote for engine repairs

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I was driving my 1991 honda accord an timing belt broke iam woorried that it might have damaged engine what should i look for i was going to replace belt an try to get back running any advice thanks


Honda engines are what they call interference engines. This means when a timing belt breaks, the pistons hit the valves and bend them. You will need to remove the cylinder head and get the bent valves replaced if you want it to run correctly. Impossible to know how many valves are bent, depends on how fast the engine was turning when the belt broke.

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Timing belt broke while driving car what internal damage should i check for before trying to replace belt


I'd recommend doing a web (or dealer) search for your specific engine to see if it's an "interference" engine. An interference engine is one where the intake or exhaust valves could come in contact with the pistons if the timing belt were to break. If your engine is NOT an interference engine, you can start to swap out the timing belt with no worries. If it IS an interference engine, and the timing belt broke while you were driving, there could be a great deal of internal damage. It's hard to estimate what the damage could be... it could range from zero damage (unlikely), to broken valves and pistons. You could do a compression test on each cylinder before replacing the belt.

Good luck.

Jan 18, 2011 | 2002 Kia Rio

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I have a broken timing belt. Can this damage the valves ?


NOT IF YOU WERE NOT GOING FAST WHE IT BROKE .MY BROKE JUMP OFF CAUSE THE IDLE PULLEY WENT OUT.

Nov 11, 2010 | 1987 Volvo 240

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Timing belt broke,does this car have a free floating engine


I'm not sure what you mean by "a free floating engine".
If your engine still runs you most likely broke the serpintine belt not the timing belt.
If you broke your timing belt you need to have your engine check over carefully. When the timing belt breaks the valve stop moving but the pistons keep going for a few revolutions. This usually ends up damaging your valves and/or your pistons. On rare occassions it can sometimes even damage the
head(s) or block.
DO NOT TRY TO START THE ENGINE BEFORE IT'S REPAIRED, THIS WILL RESULT IN MORE DAMAGE!
If you're planning on fixing this yourself you need to pay careful attention to the timing, you can have the timing marks perfectly aligned and still be off by 180°.
Once you have the belt fixed you'll need to do a compression test to see if there is any damage to the engine. If you have a difference of more than 10% on any cyclinder you'll need to take the head(s) off and check for damage.
If you want further help with this you can contact me through this web site.

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The timing belt in my 2001 pt cruiser is broken. Did this cause any damage to the engine? or do we just need to replace the timing belt


Its got damage, bent valves. replace every thing on timing belt, tensioner, pulleys, water pump. The head needs to go to a machine shop and bent valves replaced.

Apr 11, 2010 | 2001 Chrysler PT Cruiser

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Bronken Timing belt. Could this have damaged other things in car


If you 2000 Dodge Stratus is equipped with either the 2.0 Liter (SOHC) 4 cylinder engine or the 2.5 Liter (SOHC) V6 then you have serious engine damage. Both these engines are interference engines. When the belt breaks the pistons will make contact with the valves thus causing damage. The belt on the 4 cylinder should have been replaced at 100,000 miles. The belt on the V6 should have been replaced at 60,00 miles. At 60 mph you for sure are going to have some damage. How much damage, you will know when they open it up.

Oct 02, 2009 | 2000 Dodge Stratus

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Timing Belt broke while driving my 96 Toyota Rav4, 2 wheel drive. Mechanic said that Rav has a zero tolerance engine and engine will need to be replaced. The timing belt has 55,000 miles on it and we were...


Zero tolerance means the valves may have hit the piston when the timing belt broke. I would suggest doing a cylinder leakage test to see if the valves are bent or not. If the valves are not bent then you can replace the belt and everything will be ok. If there are bent valves then the cylinder heads will need to be removed and repaired.

Mar 03, 2009 | 1996 Toyota RAV4

1 Answer

1984 Nissan 300zx


the timing belt should be changed every 60,000 miles.
your engine is an interference engine, which means if the timing belt breaks or skips, the valves will hit the pistons.
if your belt broke you will have bent valves. so the heads will need to come off and bent valves replaced.

Aug 18, 2008 | 1992 Nissan 300ZX

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