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How Do Rotor Engines Differ From Regular Engines?
Most cars you see on the road have a traditional piston engine under the hood. However, a few models may offer a distinct difference with a pistonless rotary engine or rotor engine. Instead of pistons, they have rotors....

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Question
Pistons with spark issues
Hello there, a few different components can cause the engine to lose spark. It could be a fouled or faulty spark plug, distributor, or a wiring issue. I recommend having a qualified technician, such as one from YourMechanic, come to...
Question
Can you put vortec heads on 86 350 with high top pistons
Hello. The Vortec heads should bolt up to the 86 350 block, however, they will require a different manifold and engine management system. In regards to the high top pistons, I would calculate the compression ratio that should theoretically be...
Question
with the#1 piston up were should the rotor button be pointing
The rotor button should be pointing to the number 1 position on the distributor cap when the number 1 piston is at top dead center (on the compression stroke). The pistons come up two times during the combustion cycle. Once...
Question
engine knock
If there is engine knock after running low on oil and it does not go away after putting oil in it, then the damage is done. The engine bearings are bad and more than likely ruined the crankshaft, rods, pistons....
Question
2004 Hyundai Santa Fey with rebuilt engine locked up
I definitely would bring the car back to the shop that rebuilt your engine to have them repair it. If the engine is locked up, it is locked up because something is broken internally, like a piston, rod, or a...
Question
My car engine seems locked up.
The piston rods that connect to the crankshaft are most likely bent. The bent rods will cause the engine to not turn over. The engine may need to be replaced.
Question
Pistons slapping on a '98 Forester
It's sounds like it is time for a new engine. Those have those boxer engines that are opposed and they just wear out over time, because they've got pretty much more strain than a normal engine and it puts a...
Question
Oil burning
Hello. Oil can only get in to the cylinder one of two ways. Oil can get past the piston rings from worn or seized rings on the pistons. There is even a possibility of broken rings. The other way oil...
Question
Engine makes metal-to-metal noise on a 2012 Ford Taurus SEL 3.5
If you are talking about engine noise, that means that the engine is on its way out. That generally means that the bearings on the crank are worn and that the pistons are making the clunking around. Because, instead of...
Question
Opinion about Toyota die-cast aluminum engines
There are well-built engines that last a long time if you change the oil regularly. Realize that those aluminum die-cast engines have matrixes built in them. Originally, they sleeve them down with stainless steel, which of course works quite fine...
Question
Piston misfiring and oil on a sparkplug
Oil in the spark plug bore is caused by a leaking valve cover gasket. This can short out the spark plug and cause damage to the plug and coil, and also the spark plug boot. The valve cover gasket set...
Question
Engine damage
It is certainly possible that the damage to the engine was done prior to you purchasing it. This does not necessarily mean that the people who sold it to you were aware that the issue was there. Sometimes things happen...
Question
Brake piston seized after brake pad change
Was this the rear brakes? Many times the rear calipers have to be turned in with a special press that turns the piston and presses the piston in at the same time. This is because the parking brake is built...
Question
Timing belt broke
I believe that you are right: your drive belt is broken. Unfortunately, this happens to everyone at some point. The best course of action is just to replace the belt. I don't believe anything happened to any internal engine parts...
Question
Car mixing gas in the oil. Could it be a blown head gasket?
Fuel is introduced into the combustion chamber at the top of the piston and any gasoline found in the oil pan has to travel passed the piston to get there. The piston rings must be worn very badly and this...
Question
Brake changes on my 2007 Kia Picanto
You may not need brakes but should get them inspected to see if they are worn down or just noisy. If you are having to replaced the brakes every 4000km or six months, then you have issues with the calipers...
Question
Car is making a knocking noise when stopping. Other mechanics say it's motor. Some say it's the piston
Unfortunately, there is no way to tell without doing some more testing. The timing and small details about the noises you are hearing may make a huge difference in diagnosing the issue. Lifters will make more of a "clicking"...
Question
Mazda 3 has no spark and won't start
Hi there. It sounds like there could be a fault somewhere in the camshaft position sensor, crankshaft position sensor, or engine computer circuit. Check all fuses and relays and replace as necessary. The computer will not enable spark to...
Question
Failed engine, flywheel came off as well
The only way to determine the failure mode of the bolts is to send the "assembly" to a forensic laboratory equipped with a scanning electron microscope. If the bolts were loose, there would have been noticeable vibration and noise prior...
Question
Is the Engine "interference" or "non-interference"?
Hey there. In the context of engines, interference timing refers to the use of a timing belt rather than a chain, such that when this belt breaks, the camshaft and other internal parts (like valves) will cause major damage to...

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