Random Misfires

[cschmitz20]

Has anyone had random misfires? They come and.go especially in start up idle. Not isolated to one cylinder so hard to swap coils and see if it follows. I sealed up a vacuum leak I had and replaced the MAF sensor. It worked for a day or so and came back worse. My engine light was flashing and one cylinder misfired close to300 miles while driving on the highway. Could it be a head gasket.? I do t have any other issues other than an evap code. Doubt they are related as I have had the evap code for over a year. Wondering if it's time to junk it. It's a convertible so it's a second car and not needed if it's going to cost a fortune to fix it. Every once in a while it will throw a cat code 16825 although I can get it to pass the test with basic setting.s. Any thoughts would be great. Thanks

 

[cschmitz20]

Has anyone had random misfires? They come and.go especially in start up idle. Not isolated to one cylinder so hard to swap coils and see if it follows. I sealed up a vacuum leak I had and replaced the MAF sensor. It worked for a day or so and came back worse. My engine light was flashing and one cylinder misfired close to300 miles while driving on the highway. Could it be a head gasket.? I do t have any other issues other than an evap code. Doubt they are related as I have had the evap code for over a year. Wondering if it's time to junk it. It's a convertible so it's a second car and not needed if it's going to cost a fortune to fix it. Every once in a while it will throw a cat code 16825 although I can get it to pass the test with basic setting.s. Any thoughts would be great. Thanks

Sorry misfired 300 times not miles lol

 

[Jack@European_Parts]

Stop opening alternate threads and asking for guess answers now you do realize you are failing to concentrate on the repairs needed in the first thread, right?

 

[cschmitz20]

Well I figured I might get a better response if I updated to the correct thread as the other one was for another code.

 

[Jack@European_Parts]

Well I figured I might get a better response if I updated to the correct thread as the other one was for another code.

 

[Uwe]

Closed. Redirected back to the original thread:
https://forums.ross-tech.com/showthread.php?20565

-Uwe-