Turn the radio off and listen closely to your engine. Does it sound different than normal? Unusual sounds can be a clue that there is something going on with your engine.
Before you take your vehicle to the shop, gather as much information as possible to assist your mechanic in diagnosing the problem. While driving, pay close attention to how your engine is running. When a misfire occurs, take note of the circumstances such as whether the engine is cold or has warmed up; the speed at which it occurs low speed or high speed ; the frequency it occurs; and if it occurs only when accelerating or at a steady speed.
Keep a log of the problems, this information will help your mechanic pinpoint the source of the problem. Visually inspect the engine area of your vehicle. With the vehicle shutdown and cooled off, look around to see if anything strikes you as being wrong, such as obviously loose or unconnected wires, broken parts, fluid leakage or anything else that looks out of place.
Armed with this information, your mechanic will have your vehicle hitting on all cylinders and running smooth in no time. Learn more about vehicle maintenance products , find your part , or find where to buy your part today. The content contained in this article is for informational purposes only and should not be used in lieu of seeking professional advice from a certified technician or mechanic. Recent Engine is misfiring Inspection reviews. Excellent Rating. Rating Summary.
John 27 years of experience. Request John. Ford Taurus V John is very very well mannered person, He explains all his work very well. If needed I will book him again. Ford Ranger - Engine is misfiring - Houston, Texas.
John always finds what's wrong on my truck and fixes it without charging an arm and a leg. Very courteous and does a great job. Keven 7 years of experience. Request Keven. BMW i L Keven was very professional and explain every thing in detail. He was polite and knowledgeable. I would recommend him to friends and family. Keven was extremely professional, polite and extremely knowledgeable. Keven took the time to explain exactly what was going on with my engine.
Joseph 20 years of experience. Request Joseph. Dodge Grand Caravan V Fantastic experience! Josephs is great and very transparent with what he is doing. Joseph is always timely, friendly, knowledgeable and great to work with. He's worked on two of my cars and has always been above and beyond. Theodore 16 years of experience. Request Theodore. Nissan Versa L Theodore arrived on time he was very professional and got me back on the road in no time I definitely recommend.
Need Help With Your Car? An engine misfires. The engine stumbles for a moment and then regains its pace. Engine misfires can be caused by a list of faults, but there are a few suspects that occur more than others.
The primary villains are simple — spark or fuel — usually manifesting in spark plugs, plug wires, the coil s or the fuel-delivery system.
There are other more dire causes: computer or wiring problems, breakage in the rotating mass pistons, rods, crank bearings , valves and the heads can fail or distort, cooling difficulties might permit overheating and any number of gaskets could have pushed. Most are rare and, importantly, most of the scary stuff was probably caused by your failure to address simpler problems in the ignition or injection.
Engine misfires: Gather up the usual suspects Consider the circumstances: year old Toyota truck, , miles of 75 percent freeway use, plenty of time spent off road in the last 25, That means lots of mechanicals being used hard and showing their age. While our miss was inconsistent, there were some notable details always keep track of details for the sake of engine diagnostics. The miss came when the truck had been operated at a consistent speed like freeway driving.
Of course, a misfire while accelerating meant the Toyota V6 got even slower. The sensible method is to gather available knowledge about the engine misfire, focus on steps necessary to eliminate suspects and let the process guide you to its cause. Call it scientific method, with some sensible leaps. As for knowledge, if your car or truck is computer-controlled, the place to start is to plug in.
Okay, six cylinders of potential problems have just been narrowed to one. Had we not been computer controlled, studying the spark plugs would have helped focus on possible sources of a misfire.
Before you get started, however, be sure to follow all the car maintenance safety protocols with goggles, gloves and whatever else is needed. Diagnose and investigate: Ignition Choose your plan of attack — cheap to expensive, easy to difficult — and stick to it. Because the P had repeated, the 4 plug came out first. It read lean a gray-brown, not bad but trending hot and fuel-starved , predictive of a fuel problem rather than a spark problem.
The repair and replacement R and R of fuel injectors is a bigger project than the plugs, so we stuck to the plan and stored the knowledge in case ignition repairs failed to fix things.
The other plugs had been replaced about 20, miles earlier and looked almost ideal.
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