Timing belt broke on my car. Mechanic I use says it damaged some valves & pistons. Said basically that's 1/2 the engine to repair. Possible suggestion from mechanic was to replace who engine with used engine & go ahead & replace clutch while at it since that's another major expense on a car. Cost $2,500.00 for repairs. Car has 128,000 miles. Don't want a car payment -- just paid car off. Is this good idea or should I look for used car elsewhere?
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Re: Timing belt broke on my car. Mechanic I use says
Your mechanics advice is dead on, sounds like a very solid tech. as i do not know the condition of the rest of your vehicle, i would consult with the same mechanic that gave you this advice and see what he thinks. if the rest of the car is in good shape, i may be a worthwhile repair. if its rusted underneath, close to needing brakes, etc etc you may spend this money then 6 months down the road have to spend another 1000 in maintenance. this is what needs to be considered. good luck!
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If the car started and ran fine before the serpentine belt broke - that may be the answer to your problem.
If the belt also controls the valve timing (not the ignition timing, which is a different thing) the valve timing has probably altered. You will have to reset the valve timing using the timing marks for your vehicle.
In a worst case scenario, a snapped timing belt can allow the pistons to hit the valves and damage them. If this is the case your engine isn't going to fire up.
If you're not sure what to look for or do - give a mobile mechanic a call
If the belt broke while the motor was running, the motor is likely badly damaged since, I believe, the five cylinder Volvo engines are "interference engines". The crankshaft and pistons keep moving while the car is in gear and still moving, but the valves stop dead the instant the timing belt breaks. The pistons would have hit some of the valves, cracking or badly damaging the cylinder head and some pistons. If the motor is not damaged internally, though, just line up the timing marks on the cam shaft sprockets and the crankshaft sprocket and put on a new belt. Go online for a diagram of how to align the timing marks.
I would say so, most probably the valves have been bent by hitting the pistons when the belt broke. When the belt breaks, the valves stop mmoving, and the pistons keep moving and will hit the valves and damage them.
I'm assuming you meant if the timing belt broke would the pistons hit your valves? 2 parts to this, #1 if your belt just broke you should be fine, #2 if your belt skipped time significantly (highly improbable) only then would your internal components have a chance of hitting each other from components trying to open and close at improper times. This could damage both intake/exhaust valves, other valve train components and even damage the head of your pistons.
GOOD IF YOU COULD FIX IT YOUR SELF.OR TAKE IT TO ANOTHER MECHANIC.IF YOU COULD FIX TIMING BELT THEN DO A COMPRESSION AND A CYLINDER LEAK DOWN TEST AT EACH CYLINER WITH CLOSED VALVES.VALVE COVERS NEEDS TO BE OFF BEFORE YOU CAN SEE VALVE CLOSED POSITION.IF AIR BLEEDS MORE THAN 40% YOU HAVE BENT VALVES YOU WILL HEAR AIR GUSH AT INTAKE OR OUT EXHAUST PIPES.YOU KNOW VALVES BEEN.I REMEMBER I HAD 1977 CHEVY MONZA TIMING BELT BROKE.BY GOOD LUCK AND GODS WILL DIDNT DAMAGE VALVES NOR PISTONS PUT NEW TIMING BELT ON ENGINE RAN FINE.WHEN MY TIMING BELT BROKE ALL MY PISTONS WAS MIDWAY OF THE ENGINE.THAT SAVE MY VALVES AND PISTON. LIKE I SAY DO BOTH TEST FIRST THEN YOU WILL KNOW IF ENGINE DAMAGED.
True, the engines are low tolerance engines which means that there is no room for the pistons and valves in the cylinder walls at the same time. When the pistons are TDC and the valves are open, they will hit causing damage to the valves and pistons.
Be more cost efficient to replace the whole engine, rather then just the valve train redone. Chances are the the pistons will have some type of damage and it will not just be one piston that will need to be replaced.
Thank you for using Fixya and sorry for the bad news
Hello momma_green: My name is Roger and I will help you. The 2005 Chevy Aveo 1.6 engine is a interference motor. That means if the timing belt breaks.The valves will be bent. I have one in my shop now that the belt broke on it. Bent all 16 valves and damaged all 4 pistons. This is not a forgiving motor. I wish I could tell you good news but I cant. Should you need further help please just ask. Please rate the answer you received. Thank You for using Fix Ya. Roger
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.
if you dont trust the mechanic here is a way you can check it for yourelf...look through the hole as a friend tries to start the vehicle for you. if those gears you see dont move when it is cranking over he is right the timing belt broke. he was also right about the possibility it bent the valves which if it did at the very least means a valve job