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In an interference type engine if the timing belt breaks the valves will "interfere" with the pistons as they travel up if the timing belt breaks, which results in generally catastrophic engine failure.. non-interference engines generally suffer little or no engine damage with a broken timing belt.. Ok, maybe I do have a non interference engine but, If I'm sitting stationary in the fast lane of a busy motorway during rush hour because I didn't change my belt and it broke, the fact it hasn't stuffed the pistons into the valves is going to be of minor interest at that moment! © 2019 Cash Cars Buyer. Does it destroy the engine? plz tell me that my car will be able to start with changing that belt or not . The differences between interference and non-interference engines have everything to do with design. The mechanic fixed the timing belt but now my car is losing power and barely wants to go pass 60mph with gas petal pushed all the way to the floor can you tell me what may also happened. In an interference engine, the valves and piston share the same airspace and the timing belt keeps them from touching. Non-interference engine: In a non-interference (aka free-wheeling) engine, if a timing belt or chain breaks or skips, the gap between the pistons and valves prevents further damage. I have a 2004 Holden equipe sedan and the timing belt has snapped try to replace or is my car a write off? If a timing belt breaks in an interference engine, open valves may come into contact with one another. That's because the compression ratio in an interference engine is actually much better than a non-interference engine. The VW diesel (TDI) engine is one tough engine capable of going 500,000 miles when maintained. Consequently, In an interference engine, if a timing beltbreaks the engine might be severely damaged. Sorry, not familiar with that car, my guess is non-interference. The 2.0ltr in both single and double-overhead-cam configurations are interference engines. This allows the combustion reaction to happen at the precise right time and power the vehicle. That was not the end of it. This could cause you to lose power and stall out right in the middle of a highway if that's where you are, or leave you stranded in a parking lot. Interference engines are mostly 4-stroke engine types that don’t have enough clearance between the pistons and valves, and when the timing belt breaks, the camshaft will fail. Finally, it ended at 11pm. Not so with a non-interference engine. well, it happened to me at 6 pm, AAA got there from SF at 7:45, the tow reached home at 9:30, then, I had to pick up the others still stranded because the tow truck could not take 4, drive back down to Sausalito in another car. There's a good chance that if you're already experiencing any of these signs of a bad timing belt that it's not going to last much longer for you. Whatever car make you have, you should have a mechanic look to see if there is engine damage to the valves etc. When the crankshaft and the camshaft are perfectly in sync with one another, then the crankshaft is able to raise and lower the pistons, while the camshaft opens and closes the valves. I broke a timing belt on my 1990 Toyota Supra going 70mph, but it was a non-interference engine and after having the belt replaced it was fine.. here is a good list someone put together on what type of engine is in your car.. you should find the engine type either marked on the engine or on a label under the hood, or the owners manual.. good luck. The valve has to close and open at the exact moment when related to the movement of the pistons. Interference means bad things will likely happen to the engine if the timing belt breaks. Once pulled over, I found I was in a precarious spot and my rear was still protruding out into the road. Essentially the choice between an interference engine and a non-interference engine is a bit of a gamble on the manufacturer's part. The PT Cruiser 150hp engine is always a non interference engine. Ford Lynx. your car makes are always a good indication of something being wrong that you need to be aware of. Because it is driven by crankshaft and operating camshaft. In a non-interference engine, the pistons don't go into the open valve and this difference is absolutely key to what happens when a timing belt fails. 18 Votes. Hi I have Toyota diesel corolla 1994 yesterday suddenly when I was at low speed the car engine shut down and then I tried to start the. Learn how to replace a timing belt and water pump on an Accord/Acura CL F23 2.3L I4 engine (w/ video). The timing belt is critical for all the internal parts to be in sync. The timing belt had to be replaced every 60,000 miles to ensure that it would not break. Worried your fan belt is bad? When timing belt or timing chain snaps occur and the cam stops as a result, the engine remains intact, hence you only need to change the timing chain or belt. If you donâ t want to see those dollar signs adding up, check your timing belt regularly, and have your mechanic replace it on schedule. The 1991-94 Mercury Capri has some idiosyncrasies that might lead an owner to believe the car is ready for the junkyard. However, if you neglect this major service, you risk being stranded due to a belt break. On average, the cost of repairing so damaged valves in your engine will be somewhere between $900 and $2,000. This is why you'll have a major engine failure on your hands if the belt breaks or skips. Since the Model T days, engineers have known that higher compression is one thing that can build power and enhance performance. Upon arrival, the driver told us that he could only take two of the four passengers! It's also possible that if your timing belt were to snap while you're driving you could have a one-in-a-million chance to suffer no damage at all just because the timing was so lucky. But apparently later models PT's don't have that kind of engine. It’s important for you to know, because if the timing belt breaks, a non-interference engine will simply fail to start, while an interference engine could sustain heavy internal damage. Non interference is non interference ^ ^ Exactly I wouldn't have thought that the pistons & con rods were likely to stretch over 5,000rpm. The piston won’t contact the valve, and the worst you can expect is to re-time the engine and replace the timing belt. The owner's manual maintenance schedule is the source of timing belt replacement intervals, typically every 30,000 to 50,000 miles (50,000 to 80,000 km). Repair options depend on the damage. My cam belt has gone on ford ranger thunder 2008 2.5 diesel is it a non interference engine THE 2.5 IS A NON-INTERFERANCE ENGINE. All this can cause serious damage to the engine and leave you stuck on the side of the road. Oil can begin leaking from around the timing belt cover if the nuts and bolts begin to loosen. If your timing belt needs to be changed, don't let it go for too long or you may end up paying dearly for it.
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