Recently my car has been misfiring on cylinder 1, took it to a shop changed the plugs and reprogrammed the car a few days ago. That fixed it temporarily, the car started misfiring again and I have no clue why. My only guess is something sensor or electronic related. The previous plugs threads were soaked in gas and when we diagnosed the car the AFR temps were way off. The car relearned everything and still keeps misfiring. The guy at the shop kept having issues getting the car to scan and you can't even check the codes in accessory mode. He said this car "has a mind of it's own". So I'm at a total loss as to why this car is behaving this way. The only solution I can think of is taking to a ford dealership. If anyone on here has had something similar happen would greatly appreciate some feedback.
Cylinder 1 running too rich
- Thread starter gagebruv
- Start date
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Zpak
Es Aich Oh!
Leaky injector, bad coil? Doesn’t account for the electric issues but one thing at a time. Swap that coil with a different one and see if the problem follows it. While you’re doing that check the #1 plug for richness.
I swapped coils didn’t change anything, had the injectors looked at he didn’t see anything wrong with them but I could try changing them.
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That’s what I thought the mechanic said he didn’t see any issues with them. I can try that see if it fixes it.
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i am not sure how the injectors physically look/behave when they fail. other than the tests specified by ford ...
the injectors are in the heads, so it is a bit of work to get to them. you should have all the accessory parts on hand before attempting the job.
the injectors are in the heads, so it is a bit of work to get to them. you should have all the accessory parts on hand before attempting the job.
you are amazing!
yaycandy
Aerospace Engineer
Just take it to Ford before it causes a chain reaction also cheaper and faster.
Took it to another shop that understands these engines better, told them to check it out, but the car never acted up, and when they did their diagnosis the car ran perfectly. Starting to think I’m the problem lmao. Just got it back today no issues, my theory is when we did the plugs and had the car relearn everything it was still learning itself when it misfired again. So we’ll see if it happens again or not. With my luck it will. Also the previous shop tested each injector and none of them acted weird. That guys theory was something computer/sensor related from the plugs never being serviced, they were original plugs with nearly 100k miles on them, and going bad and needing to learn itself afterwards. So this may or may not be the end of this issue.
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Junkyard_Mad-Scientist
SHO Member
if the problem returns do the injectors, I chased this same thing for months and it was consistently on cylinder 2, intermittent issue that I could barely catch myself, forget trying to get a shop to find it. Forscan kind of saved the day and showed me what was happening and let me monitor the rail pressure. even with that info I just replaced the injector based on the fact that the coils were fine, the plugs were fine, and the codes added up to something fuel related. after I replaced it my start up was faster, my studder was nearly gone, and I have not had the slightest hint to a reoccurrence. my theory is everything wears out (im a philosopher I know) but until it completely fails with the kind of pressure in this system catching it may be difficult. maybe im wrong because im still learning these engines but from 24lb injectors in a fox mustang to these things running a rail pressure over 2000psi at WOT, im taking an educated guess that the dynamic of the typical injector diagnosis is more difficult, a weak injector that gets "stuck" open i imagine will have a harder time controlling that kind of pressure. that plus the carbon build up factor, it just made sense to me when all of that along with the symptoms added together. my money is on injectors but ive heard these cars are very picky about plugs too.
if you are so inclined, hold on to the old injector till you do the rest. then send them in to a pro shop to get cleaned. the flow test before and after should be telling.
add to the random marbles rolling around in one's head: gas with no additives actually leads to fewer deposits on gdi injectors. of course this may be because the additives are PFI-based. one size does NOT fit all.
add to the random marbles rolling around in one's head: gas with no additives actually leads to fewer deposits on gdi injectors. of course this may be because the additives are PFI-based. one size does NOT fit all.
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Junkyard_Mad-Scientist
SHO Member
I have it in my bin of taurus parts since I was worried about buying the standard ignition part in the first place. I planned on replacing all 6 with fresh motorcrafts within the next year or so and if funds allow I'll definitely send the old ones out for cleaning and testing. This is my midlife crisis car about 6 years early so I'm not planning on getting rid of it until the government bans ICE and stops producing gas. (Even then I have a plan but I'm one shade shy of a doomsday prepper)
well plenty of companies do ICE to electric conversions, especially for state and local governments. in India, CNG conversion is very popular. IDK about ICE to hydrogen tho. ford did have a hydrogen powered prototype Edge nearly 18 years ago tho.
Zpak
Es Aich Oh!
Lots of people built hydrogen fueled internal combustion engines. The only problem is, they all died.
