Joined: Sat Nov 4th, 2017
Occupation: Process Technician
Interests: Firearms & Ammunition, Ford Rangers, electronics
Reputation Points: 907
|I normally don't made and jump threads, but unfortunately I haven't had the misfire happen again except for just recently. It doesn't happen often, but when it does it gets worse steadily. Makes it difficult to impossible to diagnose the problem when there is no problem at that point.
I did mention it to a friend of mine (who builds engines for a hobby), and he suggested possibly an injector that sticks when it's cold, based on my description.
"It only does it when it hasn't run for a few days, but not consistently so."
Unfortunately, #6 is completely inaccessible due to the intake, so I'd have to take it off. My father suggested the intake gasket having a minor hole in it that closes up when the engine heats up, thus expanding and squishing the gasket enough so that it seals back up.
I'm thinking about getting a new intake gasket, taking out the injector and swapping it with cylinder #1, which is the easiest to get to and doesn't (seem to) require removing anything else to get to it. Since I have to take the intake off anyway, and the gasket is the original, I figure it makes sense to do.
My thought process being, if the problem goes away and never comes back, it was likely the gasket. If the problem moves to #1, then I know the injector is bad, but yet I don't have to pull off that intake again.
Does this seem like a bad idea, swapping injectors? Is it a bad idea to only replace one injector, if it does turn out to be going bad? I'd like to replace all six, but at $40 a whack (rockauto), I'd like to also save some money. One of those cases where you spend enough to fix it right, but not overspend unnecessarily. Now if they were $20, then I might.
Any opinions on junkyard injectors?
1999 Ford Ranger XLT - 3.0 V6 4x4 - Loaded