Hi, I was a Jaguar Technician from 1963 to 2011 continuously including my 5 year apprenticeship, i am retired now and when i finished i threw out all my factory course books and technical bullitins , i had lots of stuff on all Jags as you can imagine after all those years, i still retain a lot of that knowledge in my head. When the V12 engine first came out they had oil leaks from the rear main sea, the 2 halfs of the seal use to turn so the hole engine had to be stripped and modify the seal seal fitment, i did loads of them, later on another big modification was to the fuel rail. Looking forward to your channel. Cheers from England uk.
Thanks VERY much for your excellent teaching Adam!!! We are owned by a 1991 XJS named Maxine Siri Elizabeth Panthera and it is so helpful to learn more about her inner workings...
Aaii, your XJS for sure must for be of noble descent with such a name and you are very lucky to be owned by her 🙂 says a XJS convertible 95 / 4.0 (sadly until yet without name) owner from the Netherlands.
I was watching a video about the Rolls Royce Marlin engine and something in that video got me thinking there might be videos about Jaguar engines. It is true: there isn't nothing you can't learn on TH-cam. Thank you for this video, and for the upcoming series. I own an XJ12 model year late-1994. Its engine is both a joy and terror to behold. There are NO manuals anywhere that I have ever found for this engine, and although it is a little different from your XJS, I am looking forward to whatever knowledge I can leverage and apply to my 6.0 L. oops, It was the valve cover gasket replacement that required the intakes to be removed. I changed plugs, distributer cap, rotor and plug wires at the same time.
TH-cam really is a great platform for both entertaining and educational materials. Information is hard to come by on the 6 liters. I'll try to borrow a car with one to show at some point
Great video....... my son and I are performing a complete restomod on our 86 xjs.. removed all vacuum switches, single fuel reg., completely shaved and filled intake and then port and polished every piece of aluminum, chromed everything else under the hood..shaved doors,, filled in signal assemblies,,etc.. you must check out Mobeck and Simply performance , these companies especially Mobeck Tekniske has incredible 21 century mods ,, especially complete stand alone ECU, cams, DIS ignition etc. These replacements brings any year Jag, up to date. It removes the aux valve and changes it to full electronic adjustment.. Keep up the good work.. Don't forget to show how you can change the park position of the wipers for those who don't like the wipers finishing in front of the driver view..
Great upgrades! Simply performance are a channel sponsor and are sponsoring my latest XJ-S build. It’s at the body shop now but soon it will be back and the upgrades can start. I’m friends with Mobeck too. Great guy!
@@LivingWithAClassic .. oh yes I forgot they sponsored you. Great people.. I may purchase their headers one day.. my son 4 to 500 HP, out of the xjs.. lol.. Mobeck is a great guy very conversive and helpful.. keep up the great work..
A great job Adam as usual. I have a 91 XJS V12 convertible Classic Collection with Marelli ignition too. I suffered the well-known ignition failure when I first got the car. Luckily I was able to save it with the help of the local fire department. I would urge you to stress the importance of checking the rotor and cap as well as the fuel lines on these cars. Unfortunately I've suffered both types of fires. My 87 had a injector hose split and it caused me to have a total loss with a roaring engine fire. Of course the other known source is the rotor failure causing the engine to run on One Bank only. I was fortunate that the fire was very light but it caused $8,000 in damage, luckily covered by insurance. In Kirby Palms xjs Bible, its an easy fix for the rotor with a dab of silicone sealant. You would do a lot of owners favor by mentioning injector hose renewal and replacement every four years or so as well as the rotor and cap on the marrelli cars. I really enjoyed this video as I didn't realize all the differences between Pre H.E. and later H.E. which drastically improved the reliability of the cars.I also have performance intakes like yours.
Yes those things are very important! All the ignition stuff on this car is pretty new and all the hoses have just been changed. I have a video on rebuilding the injectors and replacing all the hoses. I'll put a link to it here. Thank you for watching! th-cam.com/video/gXovG0zUrTg/w-d-xo.html
Many thanks for this tour of your H.E. engine. I am interested in seeing the older and H.E heads side by side so one may see what Mr. May actually improved in the head geometry...just an idea!
really appreciate your time in making this and all videos, no one has been posting any info on what I consider a great cheap sports car for the entry lever supercar guy, maybe future info on rebuilding injectors and making your own injector wire harness..
You do get a lot of very cool car for the money. I have a video on rebuilding the injectors and replacing all the fuel lines. I'll put the link here. Thank you for watching! th-cam.com/video/gXovG0zUrTg/w-d-xo.html
I really like your videos. They are very informative and the cars and engines are great! But I have a question: I am a garage hobbyist myself, and I am currently looking at a job which is the replacement of a timing chain. Did you ever replace the timing chain of one of these beasts? :-) And please continue with the good work!
Hi Adam Love all your video s very helpful and informative. Just quick one wondering if you Done one the vacuum system vid on the v12 yet as its like a bowl of spaghetti in there . Cheers
Hi, enjoying your Jaguar channel! I don't have a later V-12 Car, but do enjoy anything Jaguar. I do have an old E-Type V-12 that is in a state of being "Slowly" restored. I hope to rebuild the Carbs soon but have not found a good TH-cam Video on that... is that something that you will be doing in the Future? Still will be Watching and Learning... Thanks.
Thank y0u very much. I am trying to donate money to you for your kindness. Not so easy. I am in Colorado Springs USA--could you give me some help or advice with this? Thanks, Chris Maoey
Isn't that true. The first time I changed the spark plugs (AND HAD TO REMOVE THE INTAKES!) I discovered the vacuum lines were a total mess. Some were leaking (not a huge surprise, and not hard to address) and some were just disconnected and capped off with screws. I had no manual to go by, but after a lot of thought and looking at the thin information I had I got everything figured out and properly connected. The immediate improvement was that when I filled up at the gas station I didn't get a huge "whoosh" of fuel vapors in my face. Evidently, one of the disconnected/capped hoses had to do with the fuel vapor recirculation system, so my fuel tank was actually being pressurized. Really looking forward to this video series.
I know the H.E engines at least here in the United States always get a bad rap. They were far superior to the Pre H.E. engines in the form of better fuel economy and driveability. I love the early 1981 to 1985 H.E. XJ-S cars.
I have fiends who are car enthusiasts. They constantly tell me to dump the Jaguar 6 liter and put a chevy engine in it. There is no way I am turning my X12 into a lump. It is far too glorious a car, and there just aren't many of them left.
@@LivingWithAClassic of course. I planned to bore the sleeves and swap oversized bowled 302 Chevy pistons and rods at the same time for maximum compression reduction.
Hey there, I have a question. Is the cam sensor n the 87 sjs 12 cylinder the same as the cam sensor on my 88 sj6 3. 6??? I’m only asking because I don’t want to spend $500 bucks for one ! Thanks, bill
Aren’t those intakes more like a hot air intake? You should make a video of the sound I’m kinda wanting some cone intakes for my 6liter because on some engines they sound amazing
It can look like it but I've never had any issues with them. They sound fantastic and do let the engine breath more along with a less restrictive exhaust. I'll make a video of it running.
You are right, Adam, it is hard to find much info on my 86 XJS engine. Tomorrow I am going to change the coolant. Do you have any advice on this process? Drain from lower radiator hose (apparently better this way than the drain plug) from what I've been told Take both caps off, fill on the right and burp on the left hose with the heater open full measure.I s this a good way of way of doing this? Chris/Colorado Springs /USA
Hey, i have a 1989 XJSC with the same engine. I am hoping to restore her to her beauty, but the engine may have overheated, although the cooling system was flushed and radiator recored. I would love to keep seeing this cideos as there is not a lot of information about these engines online.
Great videos!! I have an 1986 xjs with similar engine. I love the car but my car feels impotent. The car (engine?) makes a rattling sound when I push the pedal a bit more than just a little. More push = more rattling. The gearbox doesn't shift down easily either. Something interconected?
@@LivingWithAClassic no, just rattling...from hardly at all if I just give a gentle push on the pedal to VERY clear at half throttle. I was thinking o fstarting with the plugs to exclude any dead cylinders but the rattling sound don't fit into this. I can't find any lose parts causing the rattling at higher load. Haven't clocked the accelleration but I guess it is well above 10 sec on the sprint
This is probably not related to your problem, but you never know. I got a weird rattling sound in my 1994 6.0 L XJ12. It was accompanied by an occasional hard start. The sound was like rock stuck in a hubcap and it seemed to be coming from right below the shifter. And I most often noticed it under hard acceleration, or taking turns at high speeds. I thought at first it was from something hanging down dragging or maybe some wire or something was wrapped around the drive shaft, but could never find anything. I spent hours putting the car on jack stands, looking all over, errr, under. I ran the engine on the stands spinning the wheels. I took off the motor mounts to lower the engine to the crossmember letting run my hand all over the top of the transmission and aft area of the engine thinking I would find something that only hug down when the engine was working hard. NADA. I had a friend drive the car in a parking lot while I trotted beside listening. I was never able to reproduce the sound. VERY FRUSTRATING. Then one day I noticed dents in the shroud covering the torque convertor (TC). I had noticed a couple before but they never registered. This time there were more and what struck me was from below the car the were convex, not concave so it suddenly struck me that they were somehow made from inside the shroud. "What gremlins are living there," I wondered. I dropped the shroud and a thousand bits of metal from flakes to 1/2" (12mm) ball bearing dropped out. The outer bearing housing on the starter had broken off and as the broken piece tumbled around between the TC and the shroud and the transmission case it was ground into smaller and smaller pieces. I changed the starter (another story) and the problem was solved.
Check the advance weights on the distributor rotor. Rotate the rotor counterclockwise gently as far as it goes then let go, it should snap back. If it doesn’t there is a small port you can squirt a couple drops of 3 in 1 oil, and it should free up the weights.
Thank you for the video it is hard to find information I have a 94 6 liter idles that's all dies with Excel had a catalytic meltdown took out three cats oxygen sensor rear crank sensor from a stuck thermostat replaced all no-go left side any ideas
These engines have multiple air and water temperature sensors placed around the engine, also have temperature controlled vacuum advance/retard systems which differ depending on the state or country they were sold in. First step is to determine your build standard, my Aussie delivered XJ S seemed to be a combine elements of California and Au systems so even the published standards may not be accurate. Identify vacuum pipes on you car and check for leaks.
Caspar Graham Do not order from V12 Performance in Texas. He will take you money and never ship. A notorious thief in the XJS V12 world. Try Simply Performance in England.
@@cosgraham534, It's not a big deal to have a shop custom make these. I have pictures of the kit before intallation if you need a reference point. Or go on the V12 Performance website to look. But be cautioned not to order, as most likely he will screw you.
Looks like you're running the shorter A/C compressor. I believe this one will allow you to reach the front plugs without removing the compressor. Is that A6 to Sanden swap?
It is.a Sanden compressor. It’s the complete Fen-Air kit. It does help with the plugs on the HE engines. On a pre-HE all the plus can be reached very easily even with the larger compressor
I have a 1989 xj-s beautiful car runs good but after driving for a little while the exhaust is extremely hot and car has a smell. Someone told me their opinion was that the car was running too rich… Anything that you can think of would be a great help.
I really like your videos. Keep it up! I have a question for you. My speedo stopped working and I ordered an aftermarket transducer for the transmission. I connected the aftermarket one and spun it by hand and the speedometer moved. Unfortunately the aftermarket one is too long and doesn't fit. So I ordered a Jaguar part. When I connected it and spun it by hand the speedo did not move. I also do not get AC voltage like i did on the aftermarket one. Have you worked with this system before? Do you have a transducer you can test to see if you get AC voltage from spinning it with a drill motor? Thanks.
Thank you John! I have not had issues with transducers in the past and I don't have one easily on hand. They should produce some type of voltage. I will check through my litterature on them
10:50 - Sorry but that's not what the resistor pack is there for. It doesn't do the same job as the amplifier as there is still an amplifier on the top of the left bank inlet plenum. In the ECU there are four power transistors. The first two operate on receipt of the PIP signal from the ignition amplifier to open the injectors on banks A & B at full current. The current required to hold the injectors open is less that that required to open them quickly and fully so the other two power transistors then operate through the resistor pack to hold them open at a reduced current.
Great video, just a quick question. I have just received an xjs he 1989, is it normal for it to run aittle lumpy when cold? Its only for a few mins after which its as smooth as expected. Thanks Mo
Does it go up to a higher idle when cold (around 1,000-1,200 rpm)? If it doesn't that AAV could be your issue. I have a video on testing it and replacing it. Before I replaced the one on my XJ12 it would run a bit lumpy at first when cold.
@@LivingWithAClassic Thanks for your reply, it appears to have been old fuel, the previous owner had it standing for a while. After adding new fuel and taking it for a run on the motorway seems to have cleared up. Thanks Mo
I was considering color-coding of things when I put it back together for example: vacum hoses yelloew, ignition red, water.... and so on... would make it easier
Good afternoon Adam, seen your vid again.. quick question.. the enrichment vacuum valve at the rear right manifold.. is yours directly connected to the vacuum tree at end of the mani or a solenoid operates it? I tested mine and its open circuit until i apply a little vacuum, im assuming that it will instantly enrich or does it go open the moment you apply throttle? Which then indicate to the ECU it's open throttle..
I'm so glad you are making this channel !
Thank you so much for those kind words Raul! It's because of viewers like you that I keep making my videos
Hi, I was a Jaguar Technician from 1963 to 2011 continuously including my 5 year apprenticeship, i am retired now and when i finished i threw out all my factory course books and technical bullitins , i had lots of stuff on all Jags as you can imagine after all those years, i still retain a lot of that knowledge in my head. When the V12 engine first came out they had oil leaks from the rear main sea, the 2 halfs of the seal use to turn so the hole engine had to be stripped and modify the seal seal fitment, i did loads of them, later on another big modification was to the fuel rail.
Looking forward to your channel. Cheers from England uk.
Thanks VERY much for your excellent teaching Adam!!! We are owned by a 1991 XJS named Maxine Siri Elizabeth Panthera and it is so helpful to learn more about her inner workings...
Aaii, your XJS for sure must for be of noble descent with such a name and you are very lucky to be owned by her 🙂
says a XJS convertible 95 / 4.0 (sadly until yet without name) owner from the Netherlands.
Thanks for making these videos! I just bought a 1988 XJ12 that I want to restore and these videos are really helping!!
I'm glad I can help! Thank your for watching
Best channel on TH-cam. You have helped me so much with my 1989 XJS... keep it up watching from Australia
I was watching a video about the Rolls Royce Marlin engine and something in that video got me thinking there might be videos about Jaguar engines. It is true: there isn't nothing you can't learn on TH-cam. Thank you for this video, and for the upcoming series. I own an XJ12 model year late-1994. Its engine is both a joy and terror to behold. There are NO manuals anywhere that I have ever found for this engine, and although it is a little different from your XJS, I am looking forward to whatever knowledge I can leverage and apply to my 6.0 L.
oops, It was the valve cover gasket replacement that required the intakes to be removed. I changed plugs, distributer cap, rotor and plug wires at the same time.
TH-cam really is a great platform for both entertaining and educational materials. Information is hard to come by on the 6 liters. I'll try to borrow a car with one to show at some point
Living With A Classic that would be very cool. I have had to learn a lot about it just by tearing in and figuring it out.
Love Jags! I have a "92 xjs, V12. Thank you for making these videos.
I’m glad you like them!
BUT! I do thank you for the simple explanation of this complicated motor. That really helps +5 for Griffin door
Great video....... my son and I are performing a complete restomod on our 86 xjs.. removed all vacuum switches, single fuel reg., completely shaved and filled intake and then port and polished every piece of aluminum, chromed everything else under the hood..shaved doors,, filled in signal assemblies,,etc.. you must check out Mobeck and Simply performance , these companies especially Mobeck Tekniske has incredible 21 century mods ,, especially complete stand alone ECU, cams, DIS ignition etc.
These replacements brings any year Jag, up to date. It removes the aux valve and changes it to full electronic adjustment..
Keep up the good work..
Don't forget to show how you can change the park position of the wipers for those who don't like the wipers finishing in front of the driver view..
Great upgrades!
Simply performance are a channel sponsor and are sponsoring my latest XJ-S build. It’s at the body shop now but soon it will be back and the upgrades can start.
I’m friends with Mobeck too. Great guy!
@@LivingWithAClassic .. oh yes I forgot they sponsored you. Great people.. I may purchase their headers one day.. my son 4 to 500 HP, out of the xjs.. lol.. Mobeck is a great guy very conversive and helpful.. keep up the great work..
Very informative, thanks! I own an early XJ12 H.E. without anti-smog devices. Nice to learn about the difference between an ‘81 and a ‘91.
The '81 still has a lot of interior things from the series 2 left in it right?
Living With A Classic That’s correct!
I really like those! Either an early one or a very late (1992) XJ12
A great job Adam as usual. I have a 91 XJS V12 convertible Classic Collection with Marelli ignition too. I suffered the well-known ignition failure when I first got the car. Luckily I was able to save it with the help of the local fire department. I would urge you to stress the importance of checking the rotor and cap as well as the fuel lines on these cars. Unfortunately I've suffered both types of fires. My 87 had a injector hose split and it caused me to have a total loss with a roaring engine fire. Of course the other known source is the rotor failure causing the engine to run on One Bank only. I was fortunate that the fire was very light but it caused $8,000 in damage, luckily covered by insurance. In Kirby Palms xjs Bible, its an easy fix for the rotor with a dab of silicone sealant. You would do a lot of owners favor by mentioning injector hose renewal and replacement every four years or so as well as the rotor and cap on the marrelli cars. I really enjoyed this video as I didn't realize all the differences between Pre H.E. and later H.E. which drastically improved the reliability of the cars.I also have performance intakes like yours.
Yes those things are very important! All the ignition stuff on this car is pretty new and all the hoses have just been changed. I have a video on rebuilding the injectors and replacing all the hoses. I'll put a link to it here.
Thank you for watching!
th-cam.com/video/gXovG0zUrTg/w-d-xo.html
Many thanks for this tour of your H.E. engine. I am interested in seeing the older and H.E heads side by side so one may see what Mr. May actually improved in the head geometry...just an idea!
really appreciate your time in making this and all videos, no one has been posting any info on what I consider a great cheap sports car for the entry lever supercar guy, maybe future info on rebuilding injectors and making your own injector wire harness..
You do get a lot of very cool car for the money. I have a video on rebuilding the injectors and replacing all the fuel lines. I'll put the link here. Thank you for watching!
th-cam.com/video/gXovG0zUrTg/w-d-xo.html
@@LivingWithAClassic Thank you thank you for that link!
Love my 80s xj6 and xjs. No problems like they say. Only had to put a water pump on the xj6 after 350k. It did leak oil though
I’ll probably have to do some more research, but are there major differences between the 6 liter block and the smaller one? Thanks and take care.
Love the videos! The damned Marelli Digital Ignition has been causing me all sorts of issues as of recent.
It can be a tricky system. What issues have you had? Failed rotor?
Thank you for watching!
It's easily sorted.
I really like your videos. They are very informative and the cars and engines are great! But I have a question: I am a garage hobbyist myself, and I am currently looking at a job which is the replacement of a timing chain. Did you ever replace the timing chain of one of these beasts? :-) And please continue with the good work!
Hi Adam
Love all your video s very helpful and informative. Just quick one wondering if you Done one the vacuum system vid on the v12 yet as its like a bowl of spaghetti in there .
Cheers
Hi, enjoying your Jaguar channel! I don't have a later V-12 Car, but do enjoy anything Jaguar. I do have an old E-Type V-12 that is in a state of being "Slowly" restored. I hope to rebuild the Carbs soon but have not found a good TH-cam Video on that... is that something that you will be doing in the Future? Still will be Watching and Learning... Thanks.
Do you have a video on changing coolant/servicing the cooling system for the xjs he?
There will be a video on that topic in a month or so
Thank y0u very much. I am trying to donate money to you for your kindness. Not so easy. I am in Colorado Springs USA--could you give me some help or advice with this? Thanks, Chris Maoey
Great video Adam!
Thank you Victor!
Would love a video explaining all vacuum hoses on the v12 HE
I will make that video soon
Isn't that true. The first time I changed the spark plugs (AND HAD TO REMOVE THE INTAKES!) I discovered the vacuum lines were a total mess. Some were leaking (not a huge surprise, and not hard to address) and some were just disconnected and capped off with screws. I had no manual to go by, but after a lot of thought and looking at the thin information I had I got everything figured out and properly connected. The immediate improvement was that when I filled up at the gas station I didn't get a huge "whoosh" of fuel vapors in my face. Evidently, one of the disconnected/capped hoses had to do with the fuel vapor recirculation system, so my fuel tank was actually being pressurized. Really looking forward to this video series.
How do you change the purge on xj12 Jaguar 1996
I know the H.E engines at least here in the United States always get a bad rap. They were far superior to the Pre H.E. engines in the form of better fuel economy and driveability. I love the early 1981 to 1985 H.E. XJ-S cars.
They are a great engine! They just shouldn't be handled my a work shop that doesn't understand them. The early XJ-S coupe is lovely!
I have fiends who are car enthusiasts. They constantly tell me to dump the Jaguar 6 liter and put a chevy engine in it. There is no way I am turning my X12 into a lump. It is far too glorious a car, and there just aren't many of them left.
I have the 1985 H.E.
Great information in your vids Cheers .
Thank you for watching Simon!
What are those sensors on the fuel rails? Fuel pressure sensors? a fuel temp sensor?
Are the pre-HE heads fully compatible with an HE block? I'm having trouble obtaining a solid confirmation in this.
Yes they are with the block but not with HE pistons
@@LivingWithAClassic of course. I planned to bore the sleeves and swap oversized bowled 302 Chevy pistons and rods at the same time for maximum compression reduction.
Hey there, I have a question. Is the cam sensor n the 87 sjs 12 cylinder the same as the cam sensor on my 88 sj6 3. 6??? I’m only asking because I don’t want to spend $500 bucks for one ! Thanks, bill
Adam, did you already do the vacuum video?
I own a 1985 XJ12. where do I find the MASS AIR FLOW SENSOR ? ? ? Can you show me where it is and How to clean it with a spray cleaner I purchased ?
The V12 doesn't have one. It has a small vacuum sensor in the ECU and a line up to the engine. It can't be cleaned and doesn't get dirty either
Aren’t those intakes more like a hot air intake? You should make a video of the sound I’m kinda wanting some cone intakes for my 6liter because on some engines they sound amazing
It can look like it but I've never had any issues with them. They sound fantastic and do let the engine breath more along with a less restrictive exhaust. I'll make a video of it running.
i found a great price for an xjs v12 with two stuck exhaust valves, what do you think?
Hi, is there an easy way to change the part# C34388 throttle linkage end rubber bearings please on the HE?
Excellent video. One basic mistake when working on a British V12 you should be drinking TEA (preferably Yorkshire tea) !!
You are right, Adam, it is hard to find much info on my 86 XJS engine. Tomorrow I am going to change the coolant. Do you have any advice on this process? Drain from lower radiator hose (apparently better this way than the drain plug) from what I've been told Take both caps off, fill on the right and burp on the left hose with the heater open full measure.I s this a good way of way of doing this? Chris/Colorado Springs /USA
Adam, you definitively need to buy 6.0l V12 to complete your collection 👍
That would be fun! But then I'd need to get an early carbed V12 too 😊
Hey, i have a 1989 XJSC with the same engine. I am hoping to restore her to her beauty, but the engine may have overheated, although the cooling system was flushed and radiator recored. I would love to keep seeing this cideos as there is not a lot of information about these engines online.
I hope your engine has not overheated, they don't handle that very well at all. Thank you for watching!
Adam, please go back to Xj6 :) Waiting for those carbs :)
It will be back in the next video 😀 What specific parts of the SU's do you wish to see?
Great videos!! I have an 1986 xjs with similar engine. I love the car but my car feels impotent. The car (engine?) makes a rattling sound when I push the pedal a bit more than just a little. More push = more rattling. The gearbox doesn't shift down easily either. Something interconected?
Hard to say, could be gearbox issur or an engine issue too. Does it feel like it's "pinging"?
@@LivingWithAClassic no, just rattling...from hardly at all if I just give a gentle push on the pedal to VERY clear at half throttle. I was thinking o fstarting with the plugs to exclude any dead cylinders but the rattling sound don't fit into this. I can't find any lose parts causing the rattling at higher load. Haven't clocked the accelleration but I guess it is well above 10 sec on the sprint
This is probably not related to your problem, but you never know. I got a weird rattling sound in my 1994 6.0 L XJ12. It was accompanied by an occasional hard start. The sound was like rock stuck in a hubcap and it seemed to be coming from right below the shifter. And I most often noticed it under hard acceleration, or taking turns at high speeds. I thought at first it was from something hanging down dragging or maybe some wire or something was wrapped around the drive shaft, but could never find anything. I spent hours putting the car on jack stands, looking all over, errr, under. I ran the engine on the stands spinning the wheels. I took off the motor mounts to lower the engine to the crossmember letting run my hand all over the top of the transmission and aft area of the engine thinking I would find something that only hug down when the engine was working hard. NADA. I had a friend drive the car in a parking lot while I trotted beside listening. I was never able to reproduce the sound. VERY FRUSTRATING. Then one day I noticed dents in the shroud covering the torque convertor (TC). I had noticed a couple before but they never registered. This time there were more and what struck me was from below the car the were convex, not concave so it suddenly struck me that they were somehow made from inside the shroud. "What gremlins are living there," I wondered. I dropped the shroud and a thousand bits of metal from flakes to 1/2" (12mm) ball bearing dropped out. The outer bearing housing on the starter had broken off and as the broken piece tumbled around between the TC and the shroud and the transmission case it was ground into smaller and smaller pieces. I changed the starter (another story) and the problem was solved.
Check the advance weights on the distributor rotor. Rotate the rotor counterclockwise gently as far as it goes then let go, it should snap back. If it doesn’t there is a small port you can squirt a couple drops of 3 in 1 oil, and it should free up the weights.
mu v12 is turning over very slow Iv put in a new batter but sill tring very slow and wont statrt shall i put a new stater motor in
Thank you for the video it is hard to find information I have a 94 6 liter idles that's all dies with Excel had a catalytic meltdown took out three cats oxygen sensor rear crank sensor from a stuck thermostat replaced all no-go left side any ideas
These engines have multiple air and water temperature sensors placed around the engine, also have temperature controlled vacuum advance/retard systems which differ depending on the state or country they were sold in. First step is to determine your build standard, my Aussie delivered XJ S seemed to be a combine elements of California and Au systems so even the published standards may not be accurate. Identify vacuum pipes on you car and check for leaks.
Great video, Adam. Where did you get those air intakes with K&N filters from? I'd like to get a solution like that for my '87 V12.
Caspar Graham Do not order from V12 Performance in Texas. He will take you money and never ship. A notorious thief in the XJS V12 world. Try Simply Performance in England.
@@drewframson7495 Thanks for the tips!
Unfortunately, 'Simply Performance' don't seem to have the customised air intakes...
@@cosgraham534, It's not a big deal to have a shop custom make these. I have pictures of the kit before intallation if you need a reference point. Or go on the V12 Performance website to look. But be cautioned not to order, as most likely he will screw you.
@@cosgraham534 try aj6engineering in the UK.
so i got the pre HE ??? im not sure???? and where can i get those air intakes i want i want!
What year is your car? They are from a company that doesn't exist anymore but I think that Simply Performance in the UK has a similar item.
Looks like you're running the shorter A/C compressor. I believe this one will allow you to reach the front plugs without removing the compressor. Is that A6 to Sanden swap?
It is.a Sanden compressor. It’s the complete Fen-Air kit. It does help with the plugs on the HE engines. On a pre-HE all the plus can be reached very easily even with the larger compressor
Super videos. Thanks
Thank you for watching Kim!
I have a 1989 xj-s beautiful car runs good but after driving for a little while the exhaust is extremely hot and car has a smell. Someone told me their opinion was that the car was running too rich… Anything that you can think of would be a great help.
I really like your videos. Keep it up! I have a question for you. My speedo stopped working and I ordered an aftermarket transducer for the transmission. I connected the aftermarket one and spun it by hand and the speedometer moved. Unfortunately the aftermarket one is too long and doesn't fit. So I ordered a Jaguar part. When I connected it and spun it by hand the speedo did not move. I also do not get AC voltage like i did on the aftermarket one. Have you worked with this system before? Do you have a transducer you can test to see if you get AC voltage from spinning it with a drill motor? Thanks.
Thank you John!
I have not had issues with transducers in the past and I don't have one easily on hand. They should produce some type of voltage. I will check through my litterature on them
Thought I'd see what a v12 xjs looks like more detailed before it's scrapped
10:50 - Sorry but that's not what the resistor pack is there for. It doesn't do the same job as the amplifier as there is still an amplifier on the top of the left bank inlet plenum. In the ECU there are four power transistors. The first two operate on receipt of the PIP signal from the ignition amplifier to open the injectors on banks A & B at full current. The current required to hold the injectors open is less that that required to open them quickly and fully so the other two power transistors then operate through the resistor pack to hold them open at a reduced current.
Great video, just a quick question. I have just received an xjs he 1989, is it normal for it to run aittle lumpy when cold? Its only for a few mins after which its as smooth as expected. Thanks Mo
Does it go up to a higher idle when cold (around 1,000-1,200 rpm)? If it doesn't that AAV could be your issue. I have a video on testing it and replacing it. Before I replaced the one on my XJ12 it would run a bit lumpy at first when cold.
@@LivingWithAClassic Thanks for your reply, it appears to have been old fuel, the previous owner had it standing for a while. After adding new fuel and taking it for a run on the motorway seems to have cleared up. Thanks Mo
Do you have a video on flushing and changing the coolant in a 6.0 V12, or a 5.3, I'm sure they're similar?
I’m filming it right now actually. It should be up next week 🙂
Very Cool! Thank you so much for vids. I just bought a 94 Xjs convertible with a v12 and I'm trying to learn my way around it.
Hi I got problems with my car but its different than yours . It dount want to start . It does spark and do have fuel pressure . Can you please help
Which year is your XJS? Do your injectors fire? (click)
@@LivingWithAClassic no . I test there's + 12 is on all but no - thanks for your reply . Can i send some photos you ?
Sure, my email is under every video
And I thought my xj12 -76 (pre-HE ) looked confusing... 🤔
There's a lot packed in under the hood
As limited as Doug DeMuro's review was, the most funny quote" You open the hood and you can see the whole nightmare"
I liked that comment too!
I was considering color-coding of things when I put it back together for example: vacum hoses yelloew, ignition red, water.... and so on... would make it easier
California car! Represent!
Great with rust free cars!
@@LivingWithAClassic I'm just trying to figure out how you dragged that innocent, warm-weather car to Scandanavia.
Non pollution V12 HE 12.5-1 compression😁
"I have a 90 x J 12 V yagua that has no current at the fuel pump or the resistance of the injector.
Sounds like some wiring issues or ECU issues on that car
It’s so weird how Americans say Jag-warr
The divergent paths of the English language.
I can tell you dont enjoy the HE as much as the older units. I wish i could find a european car.
One of the worst things Jag/BL ever made.
Very poor build quality, high maintenance, 8mpg.
Good afternoon Adam, seen your vid again.. quick question.. the enrichment vacuum valve at the rear right manifold.. is yours directly connected to the vacuum tree at end of the mani or a solenoid operates it? I tested mine and its open circuit until i apply a little vacuum, im assuming that it will instantly enrich or does it go open the moment you apply throttle? Which then indicate to the ECU it's open throttle..