Ford focus misfire cylinder 1 and 4 Replaced How to fix a Ford P0304 Code: Cylinder 4 Misfire Detected Spark Inline Tester Tool https://amzn. The misfire stayed in cylinder 1. It could be a faulty injector, problems with the wires and connections related to it, or even a glitch in the engine’s computer. Disclaimer:Due Apr 28, 2012 · Hey everyone I need help with my 2000 ford focus ZX3. In your case however, you have misfires on adjacent cylinders and that has the potential to be rather more serious as simultaneous failure of more than one plug/pack is extremely unlikely. When I had a warrantee (car is a 2002 SVTF) they replaced plugs, wires, coil - TWICE. Diagnosis and repair of a 2001 Ford Focus with 277k miles. Jan 26, 2021 · Where is the P0301 sensor located? This image shows a burnt exhaust valve on the #1 cylinder of a Ford Fiesta engine. 1. Sep 16, 2018 · 4’th Cylinder P0304 is a cylinder-specific misfire code, meaning only your Focus’s fourth cylinder has a misfire. Clean or replace the clogged fuel injector. Jun 4, 2022 · We’re the premiere Ford Focus ST forum with discussions on the 2013+ Focus ST. Here are common symptoms, causes, and how to fix code P0301 Misfire Quick Tests (Is it a spark, fuel or compression problem?) Toyota Camry Cylinder 1 to 4 MisFire, fix it yourself P0301 P0203 P0303 P0304 (DIY) Guide Discover the common causes of the P0304 diagnostic trouble code and learn how to troubleshoot a misfire in cylinder 4 of your engine. How to fix a Ford P0302 engine code: Cylinder 2 Misfire Detected Spark Inline Tester Tool: https://amzn. Schedule Ford service nearby with us, or browse new Ford lease specials. See full list on 700r4transmissionhq. And i'd start with the cheapest solution first. Car: 02 LX with 70k miles OEM Plugs just recently changed No oil on plugs Cylinder 1: 135 Cylinder 2: 135 Cylinder 3: 135 Cylinder 4: 132 Aug 22, 2024 · So while casually driving a few days ago i got a couple blocks away from my house and the car just shut off. Misfire codes were cylinder 1, 4, and random misfires. Replaced coils and spark plugs. Ford Models Commonly Affected by P0301 While P0301 can occur in any Ford model, I’ve noticed it’s particularly common in: Ford F-150 Ford Mustang Ford May 30, 2025 · Can anyone of you experienced people assist misfire cylinder 1 I’ve replaced coil pack and all 4 plugs on my 2014 Ford focus st 2. I replaced both the plug and the fire, cleared the code (I have my own OBD II scanner) and it went away for about 200 miles. If im standing in front of the engine bay. Just curious if A cylinder 4 misfire with rough idle can stem from faulty fuel injectors or worn cylinder rings. I had the code pulled out and it says cylinder 4 misfiring. Bowen Scarff in Kent is your Commercial Ford Fleet Experts! Browse our new and pre-owned inventory, explore current lease specials, or schedule service at AutoNation Ford Bellevue, your local Bellevue Ford dealership. The CEL is on and is even blinking when I am driving the car. If the misfires continue on cylinder #1 then you need to look for more mechanical issues. . A misfire occurs when an insufficient amount of fuel is burning in a cylinder. Buy a new Ford truck or finance a used Ford SUV at our Ford dealership in Seattle, WA. There’s a sudden lack of power in your engines, causing sluggish starters and lackluster performances. I have changed the coil Oct 6, 2025 · If your car's ECU throws a P0301 trouble code, you have an engine misfire issue. The first time cylinder 1 misfire popped up was at an Sep 29, 2006 · I was driving to work yesterday when after a light I felt a loss of power and the engine felt like it was misfiring. 0l - misfire on 1 & 4 - $100 dollar reward While the care is driving sometimes it will be fine and then bog down and lose power signaling a bad misfire then it will go away shortly after. I How to Fix a P0301 Code: Cylinder 1 Misfire Detected Amazon Link Spark Inline Tester Tool https://amzn. The Ford Motor Company (commonly known as Ford, sometimes abbreviated as FoMoCo) is an American multinational automobile manufacturer headquartered in Dearborn, Michigan, United States. to/465UWj7 An engine misfire is when a cylinder has an incomplete combustion ignition or the Misfire on cyclinder 4 Ford Focus. P0302 is a real drivability concern and should be dealt with right away. to/465UWj7 An engine misfire is when a cylinder has an incomplete combustion ignition or has no combustion Jan 24, 2024 · P0204 Meaning This code points to a problem with the fuel injector in cylinder 4 of your engine. If the misfire moves cylinders, replace the coils. 2001 ford focus misfire cylinder 3 and 4 Code reader says misfire on cylinder 3 and 4. Its very jerky on acceleration. 4 16v and is having a cylinder 4 misfire. Cant track it down. I plugged in my AP when I got home and I was seeing codes P0301 (Cylinder 1 misfire) and P0316 (misfire within first 1,000 revolutions of startup) Jan 5, 2012 · Misfire on cylinder 4, ECU light on (1. Replaced the plugs and wires and it still feels like it is misfiring. It was founded by Henry Ford and incorporated on June 16, 1903. When that didn’t work I swapped around my coil packs and the misfire stayed in cylinder 1. Fix P0304 codes fast and save $500+. Sep 14, 2023 · What Does Code P0304 Mean? SPECIAL NOTES: Although generic OBD II trouble codes such as P0304 – “Cylinder 4 Misfire Detected” can, and do affect all OBD II compliant vehicles, some vehicle makes and models are sometimes more susceptible to some generic trouble codes than others under real-world driving and operating conditions. The open deck engine design remained but the cooling slots between the cylinders were replaced by angular drilled holes. By the time I got it there, this past Tuesday, the code had cleared itself. What do I do now edit: 75,000 miles, with Cobb intake and exhaust, and Cobb stage 1 tune edit 2 May 6, 2010 · I got a code last week that Cylinder 1 was misfiring. The company sells automobiles and commercial vehicles under the Ford brand, and luxury cars under its Lincoln brand. Car starts up somewhat rough, idles rough and sometimes dies especially when using reverse gear. Still did the same Jan 3, 2016 · P0302 – Misfire cylinder 2 P0303 – Misfire cylinder 3 P0304 – Misfire cylinder 4 P0305 – Misfire cylinder 5 P0306 – Misfire cylinder 6 P0307 – Misfire cylinder 7 (V8 SHO) P0308 – Misfire cylinder 8 (V8 SHO) P0316 – Misfire detected on startup (first 1000 revs) Cylinder numbering (applicable to all Ford V6 engines 1987-2007 Feb 3, 2023 · I moved coil packs around to see if the misfire moved (No luck) Compression test done and each cylinder was in the 150 range. The code last appeared March 5, I screen cap'd the freeze frame data and made an appointment at the dealer. Learn what Cylinder 4 Misfire Detected means, location and how to repair. Cylinder head replacement was done June 2018 with 28721 miles on the odometer. com Sep 30, 2015 · My partner has a Ford Focus 2000 1. Jan 26, 2021 · Start by switching the COP (coil on plug) with cylinder number 2. Replaced spark plugs with autolite APP104's. Sep 6, 2024 · How to Fix P0301 Ford Diagnose the specific cause of the misfire by performing a compression test, inspecting spark plugs, ignition coils, and fuel injectors. Customer complained of engine miss and took his car to Mar 14, 2019 · I attempted to rule out ignition issues by replacing cylinder 1 plug and swapping coils with cylinder 2. Mar 14, 2019 · 2016 with 3900x miles that is my daily driver and I am the original owner. This morning when I started it up again to diagnose it, I cleared all the codes to get a fresh reading and I got cylinder 4 misfire again (PO304) and I got misfire detected on startup (PO316). After taking the car to get codes pulled it came up with a Cylinder 4 Misfire. 2K views 4 replies 5 participants last post by rotarypwr Jan 26, 2013 shabba Discussion starter Jul 23, 2021 · When I looked at it, it said that there was a cylinder 4 misfire. Modifications are short shifter bits and pieces, ETS intake and Mountune trans mount. The check engine light came on showing a code ,PO304, cylinder 4 misfire. Any ideas? Am I missing something!? I had an SD Aug 15, 2007 · Can anyone please help me with this issue? My 2000 Focus SE, in the last month, started to hesitate in first from a stop. Test and potentially replace the ignition coil if it is malfunctioning. It only did this a few times and today it started doing it all the time. to/465UWj7 Possible Causes for a Ford P0302 Code: ⦁ Bad Spark Plug or Spark Plug Wire Mar 29, 2019 · 2005 zx3 2. 6i Zetec) Jump to Latest 12K views 8 replies 5 participants last post by jcollomosse Jan 6, 2012 J Engine misfire on a 2008 Ford Focus VIN 1FAHP35N68W142842. I'm guessing to start with the fuel system, so I put in some fuel injector cleaner in my gas tank. Swapped around coil packs to eliminate that as a problem. 0 liter - I've been fighting this annoying problem since I got this car back in October. The spark plugs, ignition leads, Speedo Sensor, idle control valve, accelerator sensor, fuel rail with for injectors and catalytic converter has been replaced. Any suggestions would be appreciated. Replace the faulty spark plug in cylinder 1. Idle and acceleration. I replaced the spark Nov 23, 2018 · Ordinarily, for a single cylinder misfire with no obvious cause, you would definitely be starting with plugs and coil packs. Sep 7, 2024 · How to fix the P0304 code fast and prevent further engine damage? Discover essential steps to resolve cylinder 4 misfire effectively. On my way to work I noticed a slight unusual gurgle at low RPM, didn't think much of it other than I need to keep an eye on that and see if that continues. P0304 engine code (misfire). It has new spark plugs (not gapped to 0. Code is for a random misfire on Cylinder 1. How to fix P0304 Code: Cylinder 4 Misfire Detected Spark Inline Tester Tool https://amzn. Crankcase Pressure sensor replaced. Note that while issues like excessive exhaust backpressure can cause exhaust valves to burn, is exceedingly rare for exhaust backpressure issues to affect only one valve on a cylinder with two exhaust valves. Start by testing fuel injectors for proper spray and electrical function. Swap ignition parts to another cylinder. Sep 11, 2018 · P0302 in the Ford Focus is a common OBD II trouble code. Research MPG, performance, pricng and more--and select the best option for you. Visit us and test drive a new or used Ford in Renton at Sound Ford Inc. When the code appears, it means there’s an issue that needs attention. OBD code P0303 (cylinder 3 misfire) and P0316 (misfire detected 1st 1000 revs). Replaced the spark plugs, they were gapped to 0. This injector is responsible for delivering fuel to that cylinder. Ford of Kirkland offers more than a great selection of new and used vehicles, but model research, high-quality auto repair, OEM parts and more. 026, which I know Mar 21, 2006 · Since the day i bought my car, I get a CEL. 054 they were autolite platinums. Pierre Auto Group of Seattle WA serving Bothell, Edmonds, Redmond, is one of the finest Seattle Ford dealers. I replaced the plug twice and made sure they were correctly gapped. to/465UWj7 Possible Causes of a Ford P0304 Code: ⦁ Bad Spark Plug or Spark Plug Wire ⦁ Bad Coil Jul 17, 2023 · Repair Information for P0301 Ford code. I saw a bunch of other had this, but it was always a Cylinder 3 Misfire. 0 eco boost can ran perfectly fine yesterday then parked it up for an hour and a half went out in the car started to feel idle running lumpy then engine management lig Mar 13, 2012 · Ok so I starting getting this code (misfire cylinder #1) this weekend. Would it be the left side or the right side? (near the battery, or near the coolant tank? ) And also do you have any next guesses after the coils are sorted out? P0301 means cylinder number 1 is experiencing misfires. Things I've done, I've check compression by putting a bit of oil in the cylinder car ran the same. 2002 Ford Focus SE I believe it's the Zetec at least it says Zetec on the valve cover. Therefore, this article will discuss generic trouble code When your Ford’s onboard computer detects that cylinder 1 is misfiring, it triggers the P0301 code. Replaced the dpfe sensor because broke the spot the tube goes on, had a code for a cat plugged so gutted this one for the time being till the new one arrives, and had new plugs put in less than a year Aug 18, 2010 · A typical code will look like this P0000, yours should look like this P0300, which is random misfire. Shaking / stuttering. Excessive carbon buildup on intake valves, low or poor cold compression on the cylinder, or a dirty/failing injector. Join the community and see the latest news, photos, videos, classifieds, reviews, events and more! Apr 29, 2013 · But since it's cylinder 4, I would start at the cylinder and work my way out exhausting all of the possible causes. Swap Test Here’s a quick and easy test to determine what is causing your Focus’s third cylinder to misfire. 2016. I checked the cylinder 4 spark Apr 13, 2016 · Randomly today I got a cylinder 1 misfire at low rpm's (stop and go traffic). Swap the coils on those two with one that’s not showing a misfire. If you have multiple codes with P0303, jump down a section. Our Ford dealership will also service and repair your vehicle! We've served hundreds of customers from Washington cities like Seattle, Kent, Bellevue, Maple Valley, Mercer Island, Issaquah, and beyond. You can imagine all the disasters that might follow if you persistently ignore the dilemma! Still, going blindly into it is a huge No; if you try to fix the problem without Jun 4, 2014 · I have a this code with the engine malfunction light flashing. Help? Mar 15, 2019 · Got a misfire or a jerk when cruising at highway speed and accelerating. Dec 4, 2019 · Hey guys, So my 2014 Focus ST started having a misfire in cylinder 4 this morning. 0 zetec DOHC in it The engine is misfiring like crazy but idling fine. the codes are p0301 & p0304. Changed oil on the car when I got it (About a month and a half ago) Dec 3, 2020 · The misfire is still on cylinder 3 - P0303? You’ve changed coils & plugs but have you confirmed cylinder 3 is getting consistent and a strong spark? If you’ve confirmed the spark is good, have you confirmed cylinder 3 is getting fuel properly? Are you hearing any odd sounds from the valve train? You said you did a compression test? May 5, 2015 · My focus has started to stutter/misfire when I accelerate it only happens when in a low speed for the gear but normally the engine will handle it not a problem so for example 20mph in 3rd gear should be a problem accelerating up but the engine seems to stutter/misfire until the car is at a speed Feb 17, 2025 · Explore common causes, symptoms, and solutions for Ford engine misfire problems to maintain your vehicle's performance. The company is listed on the . Oct 13, 2024 · I got a code for cylinder 1 misfire. (1 was slightly above, 2 was slightly below) Purge valve replaced. It indicates that your car’s second cylinder has a misfire. If it's bad enough to cause your Focus's check engine light to come on, you shouldn't drive your car at Aug 12, 2008 · Sooo. Now today it's back. Looking to buy a new Ford SUV, truck or car? Browse the new Ford models for sale at our Ford dealership near Seattle, WA. How to fix a Ford P0301 engine code: Cylinder 1 Misfire Detected Spark Inline Tester Tool https://amzn. The car does run crap, it's basically like driving on a road with loads of potholes. This means that the cylinder is not firing properly, leading to a lack of power, rough idle, and potentially increased emissions. The car has a fully built top and bottom end with a g25-660 Xdi hpfp, 4p aux fuel, and e85 with all the supporting mods and bolt ons. Replaced the plugs, wires, and coil pack but I'm still getting the code. Jun 5, 2021 · I've had an interesting, intermittent misfire issue and haven't been able to diagnose, but hoping to get some of you guys smarter than me can help. If the misfires move from cylinder #1 to #2 then you have a bad coil. to/465UWj7 Possible Causes of a Ford P0301 engine code Bad Spark Plug or Spark Plug Mar 12, 2018 · CEL - Cylinder #1 Misfire Jump to Latest 26K views 6 replies 6 participants last post by JaredR42 Jan 18, 2021 P Apr 9, 2023 · Repair Information for P0304 Ford code. Here’s Aug 5, 2022 · And for this, I have to know which one is the #1 cylinder. Before you can even diagnose P0304 in your car, you need to find the fourth cylinder’s location. Explore the new trucks and pickups from Ford®'s lineup. Lease a Ford F-150 or finance a new Escape at Pierre Ford of Lynnwood. Mar 29, 2019 · 2005 zx3 2. This misfire means that the cylinder isn’t producing the power it should, which can lead to a host of problems if left unchecked. Car is hard to start when - Ford 2001 Focus question Jan 8, 2025 · I need help! My 2013 focus st is throwing a random misfire code and cylinder 2 & 3 misfire code. 5 ECOboost. I got back in the car later and on my way home it Aug 19, 2024 · Code P0304 Ford Description When the diagnostic trouble code P0304 appears on a Ford vehicle, it indicates that a misfire has been detected in cylinder 4 of the engine. Jan 19, 2022 · In 2018 Ford redesigned the engine block of the 4-cylinder 1. Meta Description: P0304 code means cylinder 4 misfire causing engine shaking and power loss. I restarted the car and cylinder 4 was gone. Changed spark plugs then rep Jun 11, 2011 · It hasn't thrown a code until last week which was cylinder 2 misfire. The company is listed on the Ford® is Built for America. Jan 25, 2013 · "cylinder 1 misfire" code Jump to Latest 6. Start now. Since I already replaced the plug and wire I am at a loss of what to do next. Nov 4, 2025 · New and Simple Way to Buy a Ford, like a Ford Maverick, Bronco, F-150 Lightning and Mach-E. While it won’t cause an Discover more answers 2002 ford focus 4 cylinder, runs rough at red lights and stalls I have a 2000 ford E150 v8-Today it started running rough with a code saying cylinder 4 misfiring -help me please Ford® is Built for America. Sep 13, 2018 · P0303 Fix: Ford Focus If P0303 is the only code you get when you plug an OBD II scanner into your Focus, this section should help you determine what is causing the code. At am idle it was at about 400-500 RPM. 301-304 are specific cylinder misfires, and 316 is misfire within the first 1k revolutions of the engine. Learn what Cylinder 1 Misfire Detected means, location and how to repair. This will verify that there is only one cylinder which is responsible for misfiring if you get only one cylinder misfire code. On “V” configuration engines, it’ll usually be the second cylinder on the head further away from the front of the engine. I warmed up the car for about 10 minutes or so then did a compression check. It has the 2. Jan 18, 2023 · Misfire on 2 cylinders (more commonly known as engine misfires) is no stranger to drivers, even seasoned ones. Discover the latest lineup in new Ford vehicles! Explore hybrid & electric vehicle options, see photos, build & price, search inventory, view pricing & incentives & see the latest technology & news happening at Ford. Replacement of Ignition coil, spark plugs and wires. Dec 29, 2010 · Duratec 2. Otherwise you may need to clean the injectors for those cylinders and check the compression. tqhs jriswv pmlp adrpd yzdvem tdkfh ixdlm vdvo obz coqhe ervd utdxom uobii sftb aygdl