Question about 2004 Audi A4

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Broken timing belt. engine turns over and put a wrench on cam shafts and they turn over pretty good

I have a 2002 audi a4 1.8T and it broke the timing belt, I removed spark plugs and turned engine to where no pistons were on top and turned the camshafts with a wrench it seemed to turn good and I did not hit any spots where it would lock up. cranked the engine, it cranked smooth and even, tried to look down the spark plug holes and did not see any spot where the valves might have played tag. what's my chances on not removing the head????

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Have someone perform a leak down test on each cylinder. This will tell you if you possibly bent a valve on any of the cylinders. If you did you need to remove the cyl. head to have it looked at. If the leak down test is good on all cylinders you should be good with just replacing the timing belt and tensioner. The likely hood that you didn't bend a valve is slim since that motor is an interference motor.

Posted on Apr 23, 2009

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I will give you 1500$ for it, you will need a new engine. these are interference motors- you bent valves and damaged pistons

Posted on May 19, 2009

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"98 Volvo V70 2.4L 20 Valve no turbo. Timing jumped on previous owner bought car for steal. both cams turn freely, exhaust does have quite bit more resistance. With the timing belt off and spark plugs out...


These are interference engines. If the timing belt was never replaced and the car has over 120000 miles on it, I bet the belt broke and then the pistons hit the valves and you have trouble.

Without spark plugs in, you should be able to use a large wrench to turn the engine. If there's any resistance, you probably have a piston touching a valve.

What I would do is to remove the valve cover and possibly the cams, then with all the valves closed, see if I can turn the crank over.
You might be able to get a small inspection camera down the spark plug holes to look in the cylinders, and maybe even with all the valves closed do a leak-down test to see if the valves are sealing.

If you can get all the valves to seal, they're not bent or broken AND the pistons are sealing well (meaning, no holes in them). Then you could adjust the timing and put a new belt on it and see if it runs.

Actually - that might be the best way to start. Align the cams and put a belt on, then rotate the engine to where you can leak-down test each cylinder. Any big leaks and you have a problem.

A used engine might be a good idea, but I'd verify there's a problem first. You CAN get lucky and the belt broke when the engine was started and nothing got damaged.

Dec 04, 2014 | 1998 Volvo V70

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When should I change the timing belt on my car?


The philosophy "if ain't broke do not fix", doesn't work for the timing belt. If it broke, then can bend valves and put a hole in the piston. Normally the engine repair cost much more than a timing belt change. Worn timing chain/belt can cause engine to run rough, decrease the power, and fuel mileage, and even worse, the engine refuses to run at all. It is difficult to check the wear on a timing belt, because access difficulties, so plan to change the belt at recommended intervals. As a rule, most OEM recommend replacing OHC rubber timing belts at 60Kmiles, but there are exceptions. Porsche, Volvo recommends belt replacement at 50K up to 100K depending on engine models. Acura, Audi and Chrysler allow 90K between belt changes. Ford, Mercury and Toyota up to 100K, but not for all engines. Changes in belt materials have improved belt durability to 100K, where "long life" materials are used, as "highly-saturated-nitrile" (HSN).
Timing chains usually gives some warning signs before they fail (but not with belts). Noise from inside the timing chain cover indicates that it is overstretched. You can check the status of a timing chain by removing the distributor cap and turn the crank shaft pulley in one direction (VERY SLOWLY) until distributor rotor moves, mark with a chalk crank shaft pulley to engine. Now turn it in the opposite direction (VERY SLOWLY) until the distributor rotor starts to move the other way. If the crank pulley has to be turned more than half an inch to move rotor, the timing chain and sprockets, are worn up, and have to be replaced.
While changing the timing chain/belt, it is easily accessible for other jobs, such a water pump replacement, so it is a good idea to replace other belts, and the water pump. Make sure to send your car to professionals. It is not rare for people to have problems with engine after replacing the timing belt. In all my cars I do it by myself. It is not impossible, but you will spend more time than a professional. If you decide to do it by yourself, then get the Haynes Repair Manual (Based on a complete tear down and rebuilt), specific for your car. Go to the part Engine, and use the chapter Timing belt removal inspection, and Top Dead Center (TDC) location, and put the number one piston at TDC on the compression stroke. This can be found by putting the thumb over the spark plug hole and the pressure will push your finger upward till piston reaches the upper point. This can be done by inserting a long blunt object into the spark plug hole. Note the point where the object stops moving out this is the TDC.
YOU MUST ALIGN TIMING MARKS BEFORE REMOVING TIMING BELT.


on Oct 20, 2010 | Chrysler Sebring Cars & Trucks

1 Answer

Engine wont start


Its possible you got enough oil in one cylinder to make the engine hydro-lock. That is a condition where something liquid is in the cylinder and will not allow the piston to travel from top to bottom.
You may have broke the timing belt.

May 03, 2013 | 2002 Mazda Tribute

1 Answer

The timing belt broke on my 2001 ford focus 2.0 z engine how do I fix it


If you are technically minded, this job should take you about an hour or so, provided that you have the right tools for the job. The first thing to do is to expose the old timing belt by removing the plastic cover running down the full length of your engine from the top cover( where you fill up the oil) to the bottom, near the floor. To do this you may have to remove all the drive belts such as the alternator, power steering and air conditioner belts.
Next, place the car in 1st gear and ask some one to apply pressure to the brake pedal. this is to prevent the engine from turning whilst you loosen the bottom crankshaft pulley bolt, so as to gain access to the timing belt. This bolt might be VERY tight, in which case you need to stop the crank shaft from turning by holding the ring gear on the opposite side of the engine. To get to this you must first disconnect your battery and then remove the starter motor. You now need something like a large screw driver or tyre lever to place between the engine and the flywheel teeth to prevent the crankshaft from turning. Once you have loosened the front crank pulley bolt, you should remove the top engine cover to expose the cam shaft.
You now have to set timing, To do this safely, first remove all the spark plugs so that you can see when number one piston comes up to the top of it's stroke, Now remove the distributor cap and work out where the rotor is pointing and which spark plug is the next in sequence to get spark. remember the MOST engines rotate clockwise, when looking from the cam belt side towards the flywheel. to ensure that the valves do not ouch the piston when you turn the engine, turn the engine at the front crankshaft pulley slowly until the closest piston ( number one) is at the top of it's stroke. You can confirm this by looking for a mark on the front crankshaft pulley which should now correspond with a mark on the front engine cover. If there are a few marks on the cover, look for a zero (o) or TDC mark. Align the pulley mark and the front cover mark, Now turn the camshaft until number one spark plug will receive spark. Now take a close look at the camshaft pulley. There should be a mark of some sort to indicate that the camshaft is also corresponding to TDC.
You can now remove the front timing belt covers and remove the old belt. Now remember that the engine rotates clockwise, so therefore, there will be a tight side and a loose side to your cam belt. On the loose side there should be some sort of tensioning device. This must be locked out of the way to allow you to fit the new belt.Double check that your timing marks are correct and then place the new belt over the toothed pulleys with the tight side on the right, and any slack or free play on the left. Once the belt is in place, release the tensioner. Double check that the timing marks are still correct.
Replace the front covers and the top cover.
Replace the front crankshaft pulley and tighten. A few drops of locktite thread lock should be applied to the bolt before tightening. This bolt should be torqued to a factory setting of about 140 Nm.
It is a high tension bolt so do not be scared to make it as tight as you can. Replace all the belts, distributor cap and spark plugs and the job is done. Before starting the engine, turn the crankshaft by hand at least two revolutions to ensure that all is well.

Jan 19, 2013 | 2001 Ford Focus

1 Answer

I just changed the timing belt on my 2002 legacy gt. but it won't start. Everything turns but It will not start. It broke while I was driving.


If you did not turn the crank to set the Top Dead Center of the first piston while putting on the new belt, then it won't start because the timing is wrong.
On the other hand, if you did a perfect job of resetting the camshafts while putting in the new belt, but the old belt broke while the engine was running, the valvetrain may be damaged already. Depending on which engine is in your legacy, it is likely an Interference engine, meaning that when the timing belt breaks and the pistons are going up while the valves are going down, they hit each other and the valves get bent. You can do a compression leakdown test to find out if this has happened to you.

Dec 08, 2011 | 2002 Subaru Legacy

1 Answer

When should i change the timing belt on a 2002 chrysler sebring sedan?


The philosophy "if ain't broke do not fix", doesn't work for the timing belt. If it broke the overhead cam stops, but the crank shaft keeps moving, and the result is one or more bent valve. Normally the repair cost is ten times more, than a timing belt change. The manual recommend to change the timing belt at 90000miles. It is a good idea to replace other belts, and the water pump. Make sure to send your car to professionals. It is not rare for people to have problems with engine after replacing the timing belt. In all my cars I do it by myself. It is not impossible, but you will spend more time than a professional. If you decide to do it by yourself, then get the Haynes Repair Manual (Based on a complete tear down and rebuilt), specific for your car. I have one for each of my cars. Go to the part Engine, and use the chapter Timing belt removal inspection, and Top Dead Center (TDC) location, and put the number one piston at TDC on the compression stroke. This can be found by putting the thumb over the spark plug hole and the pressure will push your finger upward till piston reaches the upper point. This can be done by inserting a long blunt object into the spark plug hole. Note the point where the object stops moving out this is the TDC. Hope this will help.

Oct 19, 2010 | 2002 Chrysler Sebring

3 Answers

Timing belt broke did it bend any valves


This engine has been identified as an interference engine in which the possibility of valve to piston damage in the event of timing belt failure is most likely to occur, when repairing I would also replace water pump, due to pump is timing belt driven. On an 2002 VW Jetta TDI 1.9L engine, VW recommends timing belt replacement every 80,000 miles.

Aug 24, 2010 | 2002 Volkswagen Jetta TDI

1 Answer

I HAVE A 2002 KIA SPORTAGE. IT STALLED ON ME.


Hello mrhbollinger: My name is Roger and I will help you. You did not say Exactly what happened. If you were driving down the road and the engine died? Or if you pulled up to a stop and the engine died? I would check a few things first. Does the engine have over 60,000 to100,000 miles on it? If so I would look at the timing belt as a problem. Check the compression Compression should be around 160 psi. Any thing less then a 100 psi. the cylinder will not fire. Also keep in mind that this engine is a interference engine. This means should the timing belt break. The engine will suffer severe internal engine damage. By that I mean any valve that was open when timing belt broke will be damaged. Piston damage will also accrue. If the timing belt is not th problem I would look at the fuel system you should have 43 psi at the test port.I would also test for spark at the spark plug wires. If you have none and you check spark first. Check compression to make sure the timing belt is not the problem. If you remove the oil cap and can see the the camshaft. Have some one crank the engine over. If the valves do not move the timing belt is the problem. Should you need further help please just ask Thank You for using Fix Ya. Roger

Jan 18, 2010 | 2002 Kia Sportage

3 Answers

Had no oil in engine yestarday, put a qt. in it


maybe she just need oil in her? dip her stick again and find out! ooow!
ok then??? why should the cam belt have any thing to do with low oil???? and right now what makes you think its broken?
ok then! if the cam sharft seized up then it could brake the timeing belt,
oh!!! back to that lack of oil in it then?

Oct 23, 2009 | 2000 Kia Sportage

1 Answer

Snapped timing belt on 1.8t audi tt engine. Belt snapped not possible to mark bottom pully. help


just fixed my Audi TT ... timing belt snapped so the head had to come off to replace valves. used dial guage on top of piston !
if head is on then there is a plug you can remove that allows you to see top dead center..

Jul 14, 2008 | 2002 Audi TT

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