Misfire still

Hi all

I had indicated on other threads that my misfire had gone away with my Egr port cleaning. Well it had, but........ It is back. I seem to only get it on "quick turns" when the van is warm and has only sat 10-15 minutes. Starting cold I get a good start. When it does start with misfire, if I shut down and wait a minute or two, then start and allow it to idle, it seems to clear itself after a couple of minutes, and the CEL stops flashing, and engine runs normally. Code is typically 305,303 for misfire. I only have the problem at start up, never while running down the road. I have new plug leads and have swapped spark plugs around to see if the problem moved. It did not. I have not pulled any injectors yet.

Whadayathink?

Thanks

i had a missfire also in my 99 windstar,it turned out to be a fuel injector,not to bad to change, just get a chiltons book , if youve never done it before,mark

Hey thanks for the reply. I ran Seafoam through the pcv and in my fuel (hoping to improve injector performance). So far I have not had a re-currence but I'll let you know.

Thanks

I had a misfire that I had to remove each injector and physically spray cleaner over the spray end to flush crud out from inside the cap.
Car ran really great after I did that.
I had tried Seafoam into the intake as you did, and had been running Redline Complete Fuel System Cleaner through the gasoline.
I have read that BG-44 is stronger, so perhaps a few tanks of gasoline treated with that might help.

If you had not already done it, after cleaning the injectors.Replace the fuel filter as well.I need to change mine soon..