How long does a misfire last on a cold start?
Recently it has developed a misfire upon start up, about 2/3rds of the time on cold start. The misfire only lasts for a few seconds, longest was maybe 10 seconds.
Do you have to restart the engine to get a misfire?
NOTE: You MUST restart the engine for the misfire to go away. It will be running rough, turn engine off/on once it is at operating temperature and it’s as smooth as can be, no more misfire. •One time I started the truck, I felt the misfire and drove it to a parts store to read the code.
Can a lack of Spark cause a misfire?
because the cool thing is that no matter if you have misfire codes or No Codes at all, the core cause of the misfire is a lack of spark, or fuel or air (think engine mechanical problem such as: vacuum leaks, low compression, etc).
What is causing an intermittent misfire only when engine?
Cleared the code several times and it kept reporting misfire on cylinder 2. You could also feel the misfire happening. Turned engine off, started it right back up, like before no misfire, cleared the code and it no longer reported a misfire. •This just started intermittently happening.
Recently it has developed a misfire upon start up, about 2/3rds of the time on cold start. The misfire only lasts for a few seconds, longest was maybe 10 seconds.
What does it mean when cold my Car misfires?
When cold my car misfires, if I let it warm up thoroughly about ten minutes it is fine. It is not vacuum leaks, injectors, carbon, plugs, coil, etc. It has something to do with cold engine with the computer, for when at operating temperature it is fine.
Is there a bad coil on the engine?
The engine has the coils on the plugs, so no chance of a bad coil or bad wires. I’ve also purchased a USB scan tool with some software, so I can retrieve any diagnostic info the ECU is putting out.
Why does my car misfire only on startup?
If the engine is warm, It does not appear to have the misfire on startup. At least I don’t remember it doing so. Maybe a handful of times in the past month if it did.
When cold my car misfires, if I let it warm up thoroughly about ten minutes it is fine. It is not vacuum leaks, injectors, carbon, plugs, coil, etc. It has something to do with cold engine with the computer, for when at operating temperature it is fine.
When does the engine code report misfire on cylinder 2?
•It only happens when you start the engine and the engine is NOT at operating temperature. •The engine code always reports misfire on Cylinder #2 I put in a new plug and swapped coils but it still reports the misfire on cylinder #2.
What causes a Toyota truck to misfire after a cold start?
Truck runs fine from a cold start, and continues to run fine once it warms up. But once you stop, shut the engine off, and come back to restart it while the engine is still warm, it’ll misfire/run terribly. Strong vibration, low power, hesitation, flashing CEL. If you let the engine cool off completely and restart it, it’s fine again.
Why do I get a misfire on cylinder 1?
If you are getting a misfire on cylinder 1 and a lean code to boot, I’d suggest your issue lies in the fuel injector for cylinder number one. Especially since this is inconsistent. A lean misfire would mean injector #1 isn’t firing, or only partially firing.
When does a Harley Davidson run rough when hot?
Last summer I was in Seaside Or and she got really hot and started running rough and was hard to keep running at an idle.
How often do Harley Davidsons start to misfire?
We see it 2 or 3 times a year and usually in batches of 3 or 4 vehicles. If water gets into the supply tank it will go to the bottom. eventually it will build up until the pump starts to suck it out. At first it will suck a fixture of fuel and water so the vehicle will run as described. Thank you Tony.
Truck runs fine from a cold start, and continues to run fine once it warms up. But once you stop, shut the engine off, and come back to restart it while the engine is still warm, it’ll misfire/run terribly. Strong vibration, low power, hesitation, flashing CEL. If you let the engine cool off completely and restart it, it’s fine again.
If you are getting a misfire on cylinder 1 and a lean code to boot, I’d suggest your issue lies in the fuel injector for cylinder number one. Especially since this is inconsistent. A lean misfire would mean injector #1 isn’t firing, or only partially firing.
Last summer I was in Seaside Or and she got really hot and started running rough and was hard to keep running at an idle.