Question about 1984 Porsche 944

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The timing belt is broken. Is this an interference engine? What kind of repair costs am I looking at currently?

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If your timing belt is broken you have most probably damaged a few valves, if this is the case the head has to come off to replace the valves, usually when the head is taken off you get the head or heads serviced, that way you know all is well with the head.
I am not up to date with Porshe repairs but I would say that it will not be cheap.

Posted on Nov 13, 2010

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Is a vw2ze engine an interference engine it has broken cam belt do they damage internal parts?

Hi Jenny, IM AL the owner of Big As Auto Repair.

Im sorry Jenny but unfortunately the vw2ze engine is an interference engine and if the timing belt breaks it will damage parts and will be very costly. Again, very sorry.

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87 reliant k -car 2.5 timing belt

It is possible if the engine is running at anytime for something to be damaged.
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Jun 17, 2008 | 1987 Dodge Aries

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2002 Mazda timing belt busted cames are not aligned how to align them to get back time

First off, we need to know the model Mazda you are referring to and the engine size installed. Also, many of these engines are known as interference engines. That means is the timing belt breaks and the cams get out of sync with the crankshaft, valves can and will be bent or broken, resulting in additional repair parts and costs.

Nov 08, 2016 | Mazda Cars & Trucks

1 Answer

Is kia optima V6 engine a non-interference engine

The engine is an interference engine. IF you have broken the timing belt, you are in for some serious repair costs. Depending on the amount of damage, a replacement engine may be cheaper than repairs.

Mar 13, 2015 | 2010 Kia Optima

1 Answer

Misfire cylinders

No, but the ignition control module will. Follow the spark plug wires from the engine to where they come together on what appears to look like the top of a distributor.This is VW's solid state (i.e. hermetically sealed, no moving parts) replacement for a distributor.They rarely go bad except under conditions of high resistance, i.e. module is loose, bad plug wires, burnt or improperly gaped spark plugs), which doesn't help you now.

But before you go buying parts, if you have an Advance Auto Parts, Pep Boys, or another auto parts supply chain, driving a different vehicle, go and pick up an "Actron OBDII" scanner (plan on keeping this it is you best tool even if you are just asking questions). Under the driver's side dash, using the steering wheel a center line, just to the left of center (toward the door) you should see a purple port that is the same shape as the plug on the OBDII scanner plug in and follow the direction that came with it and get back to me. Using the scanner does not require turning the VW on, which I recommend that you don't until this is sorted out. What you are being told is a misfire is a "no fire", it is the vernacular from the distributor (points and condenser) days. Solid state units work or don't work, rarely if ever is there any middle ground.

Also, FYI, you have a timing belt not a timing chain. Since about 1995/96 all VW have a timing sensor to detect if the timing is off (which there is a very slim possibility that it is the timing belt). So for arguments sake let's say the P-Codes from the scanner don't reflect the ignition system, do not turn your car on and get it towed to a VW certified mechanic (not the local Ford guy that works on 1-2 VW's a year) and have the timing belt inspected.If you have never changed one, this is not the make of vehicle to start with.VW's have zero-tolerance motors, better known as interference motors, i.e., broken timing belt = a new long block. Long block means a new/re-manufactured/used motor with heads and a short block means a new/re-manufactured/used motor without heads. And don't let that scare you away from VW's they are great cars and that close tolerance is what gives their motors higher compression and better gas mileage in a smaller motor.


Broken Timing Belt
"Look in your glove box. If you open the shrink-wrapped booklet that says Owner's Manual, you'll see you should have changed your timing belt 20,000 miles ago."
Cost: $1,500 to $3,500
The lowdown: There are two kinds of engines: interference engines and non-interference engines. Or, as we refer to the interference engines in the trade, motor wreckers.
An interference engine is actually a more modern engine design, where the valves open wider and into the path of the upcoming piston. This lets the engine breathe better, giving it more power and better fuel efficiency. It all works fine as long as your timing works fine - when the valves are open, the piston is down, and when the piston comes up, the valves are closed and out of the way. If your timing belt breaks or jumps a notch on an interference engine, the piston smashes the valves, and you need a valve job ... at least. That's why it's crucial to change the timing belt at the recommended interval, before it gets anywhere near the point of breaking.
On a non-interference engine, a broken timing belt will leave you stranded, but it won't crush your valves. You can ignore the timing belt change on one of those engines if you don't mind getting stuck. On an interference engine, you're rolling the dice on a large boat payment for your mechanic.

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May 28, 2014 | 2000 Volkswagen Passat 4Motion

2 Answers

Whats the cost to repair the timing belt on a Kia Magentis 55 plate

The cost if the timing belt part and labor will float around the 500.00 mark if it was routine maintenance service. Seeing how this is an interference engine, damage to head, valves and/or pistons may have occurred at which point cost will be contingent upon the severity if the damage. Price may be around the 1200.00 mark give or take. At this point it would be a good idea to weight your options.

Sep 29, 2012 | Cars & Trucks

1 Answer

I have a 2003 Saturn vue with 138,000 miles. the machanic says the cam shafts are not turning and the timing belt is broken . How expensive is this to do, can I do it myself ?

First you need to find out if the engine is an interference engine or free running. If an interference engine, it means the valves will interfere with the pistons if they become out of time--like when a timing belt breaks. this means the valves will hit the pistons and vice versa. Usually the valves are bent and the cylinder head must be removed to get to the bent valves and replace them. If the engine is free running, the valves and pistons will miss each other if they become untimed. So all that is needed in this case is a new timing belt. Much, much easier and less costly than removing the cylinder head.

To find out if your engine is free running or interference, check out this website:

scroll down and look for the interference check.

Feb 09, 2011 | 2003 Saturn VUE

3 Answers

Timing belt broke...was told i need new this right?

The 2.4L four has a belt and is not an interference engine according to the Gates timing belt application chart for your vehicle (check it out on The 2.7L V-6 doesn't show that it needs a belt--so it has either a timing chain and gears or just gears. If the belt broke on the 2.4L four, you should be able to put on a new belt and go. The engine should not be damaged.

If the timing chain on the V-6 broke then engine damage may have occurred. Chain engines are sometimes not listed as interference because breaking a chain is so rare. The damage would probably be bent valves and damaged piston tops. The labor involved in repairing all that might cost more than just getting a rebuilt engine and putting it in.

Feb 05, 2011 | 2006 Dodge Stratus

3 Answers

I'm currently interested in a 1996 volvo 960; without having much volvo knowledge, what do you suggest I investigate and or what type of repairs are common after 140000 miles on the car

Does the current owner of the vehicle have well kept service records? If he does, ask him if the timing belt was changed on this car. And ask him to show you the service records. The timing belt should have already been replaced, but if not, you will need to replace it immediately. Along with water pump, seals, and balance shaft belt. If the vehicle has an interference motor, and the timing belt breaks going down the road, it has the potential to ruin the motor. The timing belt on a Volvo is not for the beginner, and most shops will not even touch it. Tech will need special tools to lock down the cams, or risk even bigger issues. Also, do a visual inspection, paying close attention to the undercarriage, looking for oil leaks. Volvo's are great cars, but the routine maintenance can be costly.
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Jun 07, 2010 | 1996 Volvo 960

1 Answer

Timing belt on 1990 mitsubishi 2.4 L truck broke

very likley you have interference engine. plain english ,when the timing belt brakes the camshaft stops and the valves hit the pistons bending the valves and possible piston damage. repair is costly reqiuring cylhead removal and trip to machine shop. i would recommend professioal help.

May 24, 2009 | 1990 Mitsubishi Mighty Max

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