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Thanks Ksducati and man I'm sorry to hear you haven't found your issue. Since I'm having the same problem I was hoping you would find your solution so I could try it as well. So now after hearing your story I may go ahead and pick up new spark plugs since I've run my engine multiple times for anywhere from 1 minute to 10 minutes all at rough idle and misfiring. If I didn't have fouled plugs before I very well could now.
Jagcode3 - the small rubber hose you were referring to goes to the rear crossover coolant pipe and I absolutely reconnected it. The photo you reposted was before re-assembly. The small yellow connector went to the bottom of that coolant pipe. What I still can't confirm 100% is if I didn't mix up that connector with the symposer connector but I highly doubt it as I recall remove the coolant pipe electrical connector and shoving it in the corner by the passenger side firewall.
I hear ya man, I think we're both eager to find a solution. Bummed nothing has turned out positive yet but I think we're slowly on our way🤞🤞. 6 new coils should arrive tomorrow easy enough to get in then likely last but not least re-attempt these silly injectors..just can't believe there isn't a better way to "un seiz" these things.
fearing another week or two of tinkering and I'll be heading to a shop which is ultra scary (likely big bill). But fingers crossed we find a solution.
Kevin
Make sure your new injectors are not fake before putting them in! Double check your spark plugs are not fake either - there is a Bosch and NGK counterfeit syndicate out there.
Thanks a ton, guessing jag is pretty sensitive to correct oem plugs and injectors. Shoot, I may have been scammed out on the injectors...plugs are oem but glad to check them before theyre installed. If re-attempting injectors I'll be sure they're oem.👍
Jagcode3, can you clarify what this means (looks like those misfire codes were "for reals.")
Kevin so you decided to replace all the coils? Was that just for good measure or because you believe one or more could be faulty?
I know shotgunning parts at the car isn't best but I do fear a shop lol likely cheaper to throw parts and I get a slight kick out of the work..just hope it pays off. Doing the coils purely out of praying to whoever that it has a magical cure.
Kevin
I can relate. I've been doing some of the same but not to the degree you have. After seeing your photos of your plugs and know I have run mine with misfires I think I'll order plugs but hold off on coils for the moment. And yes you and I are in the same boat about possibly having to take it or tow it to a shop. Since the shop doesn't know what the issue is they will probably go through a huge diagnosis process that's very costly. I hope we both can avoid this. BTW, what part of the country are you in? I'm in Southern California
@Trainingdragon I was referring to the state of those carbon fouled new spark plugs as direct visual evidence as opposed to OBD2 misfire codes that sometimes just disappear.
Let's see the plugs from your affected cylinders when you get them out. It could provide some clues.
I see. It seems so odd that brand new plugs could get so fouled from just a few starts. When I get mine apart I will check them and I have new plugs on order ready to go in if they are.
I see. It seems so odd that brand new plugs could get so fouled from just a few starts. When I get mine apart I will check them and I have new plugs on order ready to go in if they are.
no kidding, I agree. Extremely surprised how fouled plugs 6 and 4 were...and 5 not as bad but still very much "not new". After finding the vacuum connector unplugged thinking this was the issue and putting new plugs in only to be left with the same ending..plugs 4 5 and 6 re-fouled very fast. Hope to find a solution fast.
I am just perplexed with what you guys are experiencing. What I haven't shared to this point, when I had the y-pipe coolant leak that I showed in the F-Pace forum (at post # 93) https://www.jaguarforums.com/forum/f...5/#post2836143
I also was at the yearly service time for oil change, etc. (car was right at 50,000 miles; 2018 MY). I decided to change the plugs as well even though iridiums should last longer. The plug change went very uneventful. I replaced with the factory NGKs I purchased on Rock Auto. Here is a pic of the plugs I removed (I did not keep track of the locations), but nothing looks out of order, maybe slightly running on the rich side. All of the iridium tips are there, etc.
After the service I did and repairs to the coolant system, everything, startup, engine running, etc., there was (and still is) nothing out of the ordinary.
I'm trying to process what you guys are going through and, other than not disconnecting the battery for long enough to have all of the capacitance removed from the entire system, (in essence, a hard reset) and not doing the valve cleaning described herein, it is nothing different than what you guys did (are doing). Can't tell you how much I've thought about this, looking for a smoking gun, but other than a possible electrical mystery from the battery disconnect, not much is making sense here.
I can relate. I've been doing some of the same but not to the degree you have. After seeing your photos of your plugs and know I have run mine with misfires I think I'll order plugs but hold off on coils for the moment. And yes you and I are in the same boat about possibly having to take it or tow it to a shop. Since the shop doesn't know what the issue is they will probably go through a huge diagnosis process that's very costly. I hope we both can avoid this. BTW, what part of the country are you in? I'm in Southern California
Morning, yes, can't go wrong with removing a few if not all to at least check the condition of the plugs. Mine sure got coated and black very fast.
You're right, I'm afraid of if taking the car into the shop that like you said we'll go over everything we did and they'll start from beginning to end with a massive diagnosis and fee.
I'm stuck in chicago unfortunately hahaa, it hasn't been so bad the last month or two with crappy weather but it's finally getting nice enough to want to drive..getting to be torture at this point we'll see how long I hold off on just finding a good shop and towing it. Southern California, geez perfect weather all year round-yep time to get that v8 back on the road! Fingers crossed
I am just perplexed with what you guys are experiencing. What I haven't shared to this point, when I had the y-pipe coolant leak that I showed in the F-Pace forum (at post # 93) https://www.jaguarforums.com/forum/f...5/#post2836143
I also was at the yearly service time for oil change, etc. (car was right at 50,000 miles; 2018 MY). I decided to change the plugs as well even though iridiums should last longer. The plug change went very uneventful. I replaced with the factory NGKs I purchased on Rock Auto. Here is a pic of the plugs I removed (I did not keep track of the locations), but nothing looks out of order, maybe slightly running on the rich side. All of the iridium tips are there, etc.
After the service I did and repairs to the coolant system, everything, startup, engine running, etc., there was (and still is) nothing out of the ordinary.
I'm trying to process what you guys are going through and, other than not disconnecting the battery for long enough to have all of the capacitance removed from the entire system, (in essence, a hard reset) and not doing the valve cleaning described herein, it is nothing different than what you guys did (are doing). Can't tell you how much I've thought about this, looking for a smoking gun, but other than a possible electrical mystery from the battery disconnect, not much is making sense here.
Nice to hear that it does work out for some! Gives us hope. Appreciate you giving this thread your time and mind to help us find some resolution. I didn't mean to wedge my problems into this thread but the problems seem pretty similar to trainingthedragon-thread starter.
@Dionysus Great to have your input and experience here! Waiting to hear from @jahummer who has done this job many times and can probably tell us exactly what is going on.
@Ksducati Did you bust out that last injector using the jack method yet?
One thing I notice for both of you is that your misfires and fouled plugs are the cylinders at the rear of the engine. If there is a pressure leak at the rear gasket it might differentially affect those cylinders with a rich? condition - just a thought.
@Dionysus Great to have your input and experience here! Waiting to hear from @jahummer who has done this job many times and can probably tell us exactly what is going on.
@Ksducati Did you bust out that last injector using the jack method yet?
One thing I notice for both of you is that your misfires and fouled plugs are the cylinders at the rear of the engine. If there is a pressure leak at the rear gasket it might differentially affect those cylinders with a rich? condition - just a thought.
Hello!, not yet jagcode3. I removed the driver side bank cat yesterday..I know crazy but looks to be okay. Nothing loose inside cat and with a flashlight shining through the one side it doesn't appear to be clumpy or clogged from what I can tell. Seen a few videos on some f type cats getting totally clumped up and clogged crumbling inside but all looks okay. Time to get that back together and attempt the injectors. I'll try the jack method..I also saw someone mention an air hammer pressing up against the slide hammer..maybe I'll carefully attempt this too if needed.
Kevin
@Dionysus Great to have your input and experience here! Waiting to hear from @jahummer who has done this job many times and can probably tell us exactly what is going on.
@Ksducati Did you bust out that last injector using the jack method yet?
One thing I notice for both of you is that your misfires and fouled plugs are the cylinders at the rear of the engine. If there is a pressure leak at the rear gasket it might differentially affect those cylinders with a rich? condition - just a thought.
Welp, I did it. Cyl 5 injector is half out! The other half is lodged in the head..errrr MAJOR BUMMER. I've seen a YouTube vid of a guy using an extractor to twist what's left of the injector inside enough to dislodge it..that'll be my next move. Otherwise not sure if I'm skilled or talented enough to attempt a cylinder head removal-yikes. Towing this to a shop just got even scarier.
@Dionysus Great to have your input and experience here! Waiting to hear from @jahummer who has done this job many times and can probably tell us exactly what is going on.
@Ksducati Did you bust out that last injector using the jack method yet?
One thing I notice for both of you is that your misfires and fouled plugs are the cylinders at the rear of the engine. If there is a pressure leak at the rear gasket it might differentially affect those cylinders with a rich? condition - just a thought.
Welp, I did it. Cyl 5 injector is half out! The other half is lodged in the head..errrr MAJOR BUMMER. I've seen a YouTube vid of a guy using an extractor to twist what's left of the injector inside enough to dislodge it..that'll be my next move. Otherwise not sure if I'm skilled or talented enough to attempt a cylinder head removal-yikes. Towing this to a shop just got even scarier.
@Ksducati That's a bummer - what method did you use that broke the injector? @randyb's method is the next step.
Just about 1000 good ol fashion slides. I'd take random breaks then go back at it for another 70 or so. So disappointed now but yes, responded to randyb thread who gave his detailed extractor list. Hope to hear from him in the thread it would be really great to get the thing out without removing head. Can only imagine how involved that process is. The coolant pipes project was about my max for time and involvement..that sc was pretty stuck on there too so if I don't have any success with randyb method it'll head to a shop willing to take on such a project..along with a ton of money.
Hey guys. Getting caught up a bit here. Ksducati just to be clear your feedback here is incredibly appreciated so no need to feel like to you wedged in. Sadly this is actually helpful since I was feeling like i took a reasonably simple job and made an absolute mess out of it. So many people had no issue with this job so it's helpful for me (sad for you) that you are having similar issues. In your case you have more variables since you did more work and you actually did mods.
Sorry to hear that your having trouble with the last injectors. I've never pulled those out so I can't offer any good advice but I'm sure lots of others can offer up more suggestions.
I'll be tearing into mine again on Friday so hoping there's more folks that chime in with more ideas on what this could be.
I just watched a Youtube video of a guy with same engine in an XFR with the same problem. He wasn't sure what to do. He happened to run out of fuel and tried recranking the car for a while with no luck until he realized he was out of fuel. Had added fuel, took a bit for the car to start, when it did it was fine. How weird. Here's the video but you need to read the comments section.
