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What causes the engine to sputter?
Start of with the maintenance items: Tune up parts-cap, rotor, plugs, fuel filter, air filter, pcv, wires. The plug condition may help clue what is going on. Clean Throttle plates and intake valves
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Well, a variety of things would cause sputtering and hesitation. When the engine is cold, the thickness of oil is greatly increased, and may not make it all the way up to the …top of the valves and that would make the engine rumble and die. Colder temperatures also would make a throttle stick, causing hesitation. Your choke may be sticky. Maybe your temperature sensor is off, and is registering the 'cold' temp colder than it actually is. At any rate, plan an extra minute or two and LET YOUR CAR WARM UP before you drive it. And remember, everyone else on the road has had their cars sputter, hesitate, and die in traffic. It happens when its cold out. If it is a new enough Toyota the fuel injectors take a while to warm up and often does that in my truck don't worry about it but let it warm up like five minutes or so before going over twenty-five or so. My experience with a '98 Tacoma 4 cylinder: the mass air sensor was dirty. Twice. It is just downstream of the air cleaner. First time a small tear in the air filter allowed dirt in. Second time a tiny bit of hair, probably off my shirt, when I changed the filter.
Answer it could be the coil
If the smoke is black it could be caused by a faulty fuel pressure regulator which could be causing the engine to get too much fuel.
Hmm, I had a similar problem with my Ranger. It had an untraceable electrical problem, and we sold it for scrap. Symptoms include backfiring, severe loss of RPM before backf…iring, dying unexpectedly, just about everything it shouldn't do. How bad is the sputter? Does it sputter, or does it sound like a large dying animal?
A faulty muffler will not cause this but a clogged catalytic converter will.
There can be quite a few causes, depending on what you mean by "high rpm". Sometimes it's "valve float", that's where the valve springs aren't strong enough to return …the valves to their closed position once the engine hits high rpm. Sometimes it's a coil that can't cycle quickly enough to provide spark. Sometimes it's low fuel pressure or a partially blocked fuel filter that restricts sufficient fuel from getting to the engine at high RPM. The problems can be caused by fuel, electrical or physical problems, and you need to find out which. Start with a computer diagnostic scan. Better yet, check with the manufacturer and find out where "red line" is. If you're trying to run it past red line, expect it to "sputter".
the coipack...you know the thing the sparkplugs come out of....loss of power at random times...no acceleration but at other times the car runs fine new coilpack'll …set you back $120 new but i got mine at a junkyard for 20 buck....not a problems since
Needs a full service Fuel pump/filter Incorrect fuel ECU (brain) AFM/MFA (air fuel mixture meter) Split air/fuel hoses
You may have a corroded fuel pick up line or a fuel pump that is in need of replacement
Water in engine-head gasket most likely.
yes, your timing chain keeps the valves in you engine, opening at the correct times in order for your engine to properly work. when the timing chain is NOT opening the valves …at the Right time, the engine will "sputter" or have a rough idle. This is a telltale sin of a wearing chain. I would recommend you replace it as soon as possible so as to avoid your chain slipping, or breaking in your engine. This is NOT a job you can do yourself, unless you are DEAD SET on doing it. It may take you days to finish this, because you must either "tip" or pull out the engine in order to access all of the main components. This is a COSTLY process, as most shops charge around $1000 to change you timing chain. goodluck
Yes it can.
dirt in the carburator, incorrect fuelling or ignition (i.e. spark) breaking down under load. Check that fuel is getting through, fuel pressure & that injectors are spraying c…orrectly, and that plugs are giving a good healthy blue spark. If spark is weak it could be plugs, leads, coil, distributor cap / rotor arm or a bad earth - check everything.
it can either be the coil that provides the spark for the spark plug failing or an out of tune carburator. i would try cleaning the carb but being very careful not to move the… screws/float bowl position/ or air screw. but spray everything with carb cleaner and spray dry with an air compressor, making sure all needles are cleaned out with thin wire. nathaniel. work at goodyear and recently was taught by lead mechanic how to clean carbs and fixed my motorcycle just yesterday from cleaning the carbs extensively and tuning.
Yes, that and dozens of other causes. Yes, that and dozens of other causes.