misfire

Here is your chance to learn more about Sparkplugs and what would be best for your car. Air, spark, and fuel. The three main components to your motor firing. Air is everywhere. Fuel is at the station. LethalPerformance.com has any Sparkplugs you could need. You know what to do...

Here is your chance to learn more about Sparkplugs and what would be best for your car. Air, spark, and fuel. The three main components to your motor firing. Air is everywhere. Fuel is at the station. LethalPerformance.com has any Sparkplugs you could need. You know what to do...

Here is your chance to learn more about Sparkplugs and what would be best for your car. Air, spark, and fuel. The three main components to your motor firing. Air is everywhere. Fuel is at the station. LethalPerformance.com has any Sparkplugs you could need. You know what to do...

Here is your chance to learn more about Sparkplugs and what would be best for your car. Air, spark, and fuel. The three main components to your motor firing. Air is everywhere. Fuel is at the station. LethalPerformance.com has any Sparkplugs you could need. You know what to do...

Here is your chance to learn more about Sparkplugs and what would be best for your car. Air, spark, and fuel. The three main components to your motor firing. Air is everywhere. Fuel is at the station. LethalPerformance.com has any Sparkplugs you could need. You know what to do...

Here is your chance to learn more about Sparkplugs and what would be best for your car. Air, spark, and fuel. The three main components to your motor firing. Air is everywhere. Fuel is at the station. LethalPerformance.com has any Sparkplugs you could need. You know what to do...

Here is your chance to learn more about Sparkplugs and what would be best for your car. Air, spark, and fuel. The three main components to your motor firing. Air is everywhere. Fuel is at the station. LethalPerformance.com has any Sparkplugs you could need. You know what to do...

Here is your chance to learn more about Sparkplugs and what would be best for your car. Air, spark, and fuel. The three main components to your motor firing. Air is everywhere. Fuel is at the station. LethalPerformance.com has any Sparkplugs you could need. You know what to do...

Here is your chance to learn more about Sparkplugs and what would be best for your car. Air, spark, and fuel. The three main components to your motor firing. Air is everywhere. Fuel is at the station. LethalPerformance.com has any Sparkplugs you could need. You know what to do...

Here is your chance to learn more about Sparkplugs and what would be best for your car. Air, spark, and fuel. The three main components to your motor firing. Air is everywhere. Fuel is at the station. LethalPerformance.com has any Sparkplugs you could need. You know what to do...

Here is your chance to learn more about Sparkplugs and what would be best for your car. Air, spark, and fuel. The three main components to your motor firing. Air is everywhere. Fuel is at the station. LethalPerformance.com has any Sparkplugs you could need. You know what to do...

04 Cobra 2.76 Eaton 340lph pumps pulse width modulated Bolt ons 60 lb. Injectors The car was tuned remotely and runs strong under wot. Tuned to lambda of 0.78 at wot and did all part throttle stuff. Week later I noticed an idle puls . It happens if I clutch in and go into neutral at any kind...

As stated in the title, my cobra is sputtering and backfiring below 3 to 3500 rpms then smooths out, it seems to me like its missing fairly bad. Its hard to tell during idle since it has stage 3 cams installed and i'm fairly new to this car so I cant say for sure. It's also worth mentioning...

Alright so, I have a 2011 Mustang GT 6M that I purchased used at 84xxx miles. At about 89xxx miles the CEL showed up and the only code is p0308. I knew this was a common issue on these cars but I checked the main things that it could be like changing spark plugs and such. I swapped the coil pack...

Alright guys so i have a 2003 cobra, I went to delete my EGR from my car (the bracket on the side of the supercharger with the associated modules). Now when the car is under slight boost or any boost at low rpms the car will stutter almost like a misfire for a quick second. I have replaced the...

So when I'm driving my car, when I go WOT and over 6500 rpm's my car starts to flash the check engine light and its a p0300 code. I check my misfire data through a handheld I have and I have misfires on every cylinder as follows (cylinder and number of misfires): cyl1-8 cyl2-2 cyl3-18 cyl4-1...

I've been getting very, very weird misfires, I'll just get right to it. Bought bone stock 2012 GT 55k miles on 2/2015 . Been doing small stuff here and there. Had a misfire in 3 and 5 and a p0300, replaced the coils ran good. I had the same p0300, p0303 and p0305, so I changed the coils and the...

My car seems to idle fine but will occasionally die on me at a stop light then crank right back up like nothing happened. Under a little throttle the car will miss sometimes. Under full throttle it won't miss at all. It's pretty aggravating and I'm not sure what's causing it. It has new NGK TR6...

I had my local shop installed a Stage 3 Exedy clutch and trowout bearing in my 2011 Mustang GT 6M. The flywheel was just resurfaced. Anyways the car felt great for the first week as I went through the break in period, no issues at all. After the breaking period I was pushing the car a bit past...

Hey guys, so long story short i finally got my car back from someone hitting me in an accident about 6 weeks ago, all cosmetic and safety system related, new hood bumper, air bags, etc.... Now its back and its got some problems. First off before the accident happened my car was throwing code...

Alright guys so a few days ago I decided I would change my spark plugs and coil packs because when I bought the car the guy had brand new spark plugs in the box sitting in the car and I had new coil packs I had never used before. Anyways I changed both the plugs and coils and drove it for around...

Recently installed a procharger kit on my car by myself and right after I started it up the idle was going crazy but after a few seconds it settled down. Thought the problem could be fixed with a performance tune but it still idles crazy when its cold and when I drive it the engine sputters...

Hello, I have 1994 cobra that i bought from a friend not running. He couldn't figure it out. When he got the car, it was turbo'd with an explorer motor in it. So i bought the turbo setup from him and modified it to go on my fox and then sold my fox. Then he got fed up and i wound up buying the...

About a year ago i got the code after installing SCT strategy tune with Steeda CAI. I was lucky and got the Cylinder and other parts replaced on warranty. for about a year now running cai and a tune from a reputable company. P308 pops today and its a misfire. The car is running fine. Could it...

Hey everyone, Im new to the forum and havent joined any others before either, but I've been chasing issues with my mustang for about 3 months and have spent too much time/money on it and run out of ideas, so I'm on here to pick yalls brains and possibly get new ideas. first off heres the...