Failed Head Gasket! - Investigating a possible head gasket failure on a Jaguar XJ6
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- čas přidán 27. 11. 2019
- A friend of mine is storing his 1975 Jaguar XJ6 at my house but it flew a coolant hose on the way there. Has the head gasket failed? In this video I try to find if the head gasket has failed by performing a compression test.
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Music used: Dancing Hearts - Anders Enger Jensen • Dancing Hearts
#windowswitches #jaguarxj12 #jaguarxj6 - Auta a dopravní prostředky
One, if not your best video yet!!! Please update with the coolant test! I always get nervous when I do compression tests!
Thank you so much Richard! I get nervous too, it took me 3 years to dare to perform one on my XJ12. There will be an update soon.
Your compression tester hose has an air fitting where it attaches to the gauge. Remove the coolant cap, manually rotate the engine to close the valves for each cylinder, install the compression test hose and apply air pressure from your air compressor. As you individually pressurize each cylinder, watch for bubbling in the coolant.
As a timely aside, I am about to do a head gasket on the 4.0L AJ16 in one of my XJS's! :-)
I've been meaning to try that, however it does seem to be blown. Good luck with your head gasket!
Thanks for making these videos! Love learning about the old jags as I figure out my XJS. About to put some GAZ suspension on the IRS the next month. 🤘
Thank you for the kind words Kyle! GAZ are great! Best of luck with your IRS
love your videos
Hi Adam. Please make a video about XJ6's overdrive. Thank you for sharing your information 🙏
All you need is a head gasket test kit. A lot easier than a compression test. And if the co2 comes from another part of the engine, the head for exemple, you cannot detect it with a compression test.
That will be the next test for this engine. Let's hope there isn't anything wrong
@@LivingWithAClassic As you compression tests results are not really conclusive try a bottle of Kseal if it has minute leakage around the gaset or hairline cracks in the head it will seal them up, Chrysler cars commonly suffer from hairline cracks which is why Chrysler stipulate only to use Mopar anti freeze which actually contains Kseal type ingredients, research Kseal and for the cost of it could be a cheap fix see the reviews interestingly one about a Jag uk.trustpilot.com/review/kseal.com
I will have to look into the product!
great video
I'm glad you enjoyed it!
Hi Adam
I'm about to buy an xj6 series three which I suspect has a blown head gasket. I know you attempted to use something like K-seal that acts like a gasket repair which failed but having followed your videos I noted that the studs had been incorrectly placed and therefore the torque settings on the nuts were incorrect. My question is do you think this contributed to the failure of this product and if so would there be value in me performing the same type of repair to see what success can be had.
The current owner also reported the oil pressure dropped when driving which I am concerned about but he has mentioned the oil is milky.
Hello. I watch your channel with interest, because you very well explain the whole process in stages. I have a jaguar xj12 86 year old and began to repair it myself. I am interested in one question: how to properly change antifreeze. which brand is suitable, how to do it, in general all the details. thanks a lot.
I'm glad you're enjoying the content Igor!
I will be changing antifreeze on both V12's very soon and there will be a video on it.
Please, can you tell me the number compression good in this motor
Is the 1975 still a series 2? How is your friends Xj6 different from your 1977 besides the engines? Any exterior or interior design changes between those years?
Yes there are a few changes, a 1975 is considered an early series 2. They are both long wheel base but the XJ12 has a higher quality leather interior than the XJ6. An early Series 2 has brushed aluminum around the gear selector and ashtrays and a late one has it all in black. These both have silver around the dials but from 1978 all the dials are black. This particular XJ6 has manual heat and ventilation so no AC but both have electric windows.
There could be a future video on showing the differences.
@@LivingWithAClassic HIF7 carbs replacing HS8s. Immersed fuel pumps.
@@LivingWithAClassic would love a video with an in-depth comparison of series 1-2-3 !!
Any plans for injectors not triggering on XJ6 series 3?!?
I don't have access to a series 3 at this moment but I'll have a look through my parts and see if I have enough to demonstrate some issues.
I've got an 85 xj6 and I just recently over heated it quite badly! It only has 49k miles and was recently rebuilt with new gaskets. However it ran without a water pump for about 10 highway miles..it died on me and now is turning over very weakly. I hope I didnt blow any gaskets...
Dont worry the gaskets are fine you just bent all the con rods!
your best bet is a cylinder leak down test not a compression test and or a borescope camera down each bore and see if the cam picks up coolant on the top of the piston, as for the compression as a mechanic it is time for that motor to come out and have a rebuild if it was at 175 to 185 compression it would be all right my personal opinion is that its not a head gasket but that motor is sad and tired
I will perform a few more tests on this engine and talk to the owner. There will be an update soon on what will happen to it.
@@LivingWithAClassic As you compression tests results are not really conclusive try a bottle of Kseal if it has minute leakage around the gaset or hairline cracks in the head it will seal them up, Chrysler cars commonly suffer from hairline cracks which is why Chrysler stipulate only to use Mopar anti freeze which actually contains Kseal type ingredients, research Kseal and for the cost of it could be a cheap fix see the reviews interestingly one about a Jag uk.trustpilot.com/review/kseal.com
I was reading it's supposed to be 210-220 on this engine? That's what it is on the 12 cyl. Not sure on the compression difference of engines just figured it might be close.
The 70s straight six shouldn't have that high compression. Around 140 will do. I'm going to perform the test again and see. The car ran very well before this incident.
An interesting problem, I would think the same and say yes the head gasket has gone. But I'm no mechanic 😁
I believe it has too or maybe a cracked head. Either way, not good news.
Not good at all.
@@LivingWithAClassic I have been giving alot of thought this afternoon, I fear a crack to head, does bubbling become worse as engine heats up ? the crack may expand as engine warms.
No McPugg you are NOT a mechanic. Unless....you are using that as a cover for your Mi6 actions. 🤗
@@klwthe3rd I would say I'm more of a problem remover.
Hello sir