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Hello Everyone:
I took off my SC cover and looked for leaks after posting on the smell. As I stood there I noticed a random knocking either in the SC or water pump. How do you tell which one it is? I don't see any leaks. I am guessing it is either the SC bearings or the water pump. I don't think this is normal. Any help. Thanks
Last edited by GGG; May 15, 2021 at 09:17 AM.
Reason: Edit typo in thread title
You could try there old trick of a long screwdriver or similar device and then place one end the suspected component (if accessible of course)with engine running and place you ear on the other end, if the bearing is on it's way out you will hear it quite easily.
If it's more of a knock i would think there would be excessive lateral play in the bearing which you should be able to determine by grabbing it and giving it a good old pull back and forth
Last edited by rfarmery; May 14, 2021 at 10:30 AM.
Well, I took it to my Jaguar mechanic. He told me it was the SC bearings. I will have to have it rebuilt. Would you go ahead and change the water pump too since it is easier to get too? OR if it is not broke don't fix it. 40,000 miles on Jag.
It COULD be the Supercharger Snout isolator and not the bearings. That'd be WAY less expensive than all the SC bearings. The isolator is WAY more common a problem also. I may have that same thing starting on my car, the isolator. It makes a light clunky once in awhile.
I too have a slight "knock" that is not the injectors. Was told it was probably a super charger "coupling". Was also told that it has become a common problem and there is a kit to fix it but unless it gets much louder not to worry at this time. Just keep an EAR on it.
If doing the coupler it's always worthwhile doing the fluid too, which is far easier with the SC out at the hoses can be inspected and replaced* (as well as the water pump)
*mine had perished on my 2014 and last time I looked it was considerably warmer in Houston than Blighty?
Or maybe its just a resident squirrel?! Actually, we just found one in my son’s engine compartment, nestled between the wheel well liner and the body, lol.
“Probably” doesn’t work for me. Get the trusted opinion from someone with the experience. In the end it will save grief, time, money.
If it ends up being some component of the supercharger, don’t sweat it. As many are quick to provide comment on the inefficiencies (and it is compared to some others) of the Eaton supercharger, know that it is rock solid, dependable and serviceable... the very reason it is adopted by many car manufacturers. In fact I can’t think of a GM shop, Ford shop or race shop that would’t know how to be helpful.
The SC snout isolator/coupler is a common wear item. I had mine replaced on my 5.0L XJ a few years ago under warranty at around 35K miles. It wasn't that noisy, but it was only going to get worse.
The Jag shop I took it too does all exotic cars. They had a Rolls and Maserati on two of their lifts. I talked with the Jag mechanic for about 30 minutes. I said he does these all the time as the Range Rover has the same engine. I think and hope it is the coupler. He told me that it will just get louder and louder. Since it is in the shop (and I just bought it 1000 miles ago), I will have the water pump, fluids, brittle hoses, and anything else fixed. He told me it was just a bad design by Jaguar as well as the water pump. Oh well it happens to everyone that owns a Jag, it is a matter of time. I told him to take good care of my baby as I love this car. And yes it is hotter in Houston that Blighty, MaryUK. I checked the temp in Blighty and it was in the 60s. It going to be mid 80s in Houston today. One last question for everyone. Do you use OEM Jaguar parts or after market? The mechanic said they use OEM Jaguar parts as most of the third party parts come from China.
While Jaguar/Land Rover (as well as virtually every other car manufacturer) may have certain parts made in China, these will be parts made to JLR specification - and these are OEM parts. But then, there are other similar parts which do not necessarily meet the specification - aftermarket parts - cheaper, and often of much lower quality. The issue is between OEM parts and aftermarket parts.
Thanks everyone for your comments. I have learned so much with just being on here for a short time. Will go with the OEM part on water pump. I started looking up where all the US parts companies make their parts. I looked up Gates which is a well known US company and their parts are from China, Japan, Korea. Who knew?
Sorry I called you MaryUK instead of MarkyUK. I read it wrong. Older eyes.
Do they make engine cover that is vented to let the hot air circulate better? It does got hot under the hood in Houston. Also I am constantly wiping off the brake dust off my wheels. Would changing to ceramic pads be a better choice for dust?
If I lived in Houston I'd run with my engine cover off, it got up to a balmy 56f here today where I live.
In the UK we've had:
1) The coldest April since 1922
2) Anticipated the coldest May since records began in 1649!
So, as I am famously know to say "Global warming my @rse'
PS: OEM all the way btw
I do hope your car advice is based on better info than your climate knowledge. Cheers.
"Our weather is playing out on a background of ongoing global climate change. It is likely that, globally, 2020 was one of the three warmest years on record and that 2011-20 was the warmest decade. It is, therefore, no surprise at all that the UK climate is also continuing to change as a result. The UK has warmed by close to 1C, comparable to the global rise in average temperature."
I always open the hood after I've parked in my garage to let the heat out of the engine compartment. That helps prolong the life of the rubber parts. But I won't remove my engine appearance cover cuz it's too pretty!
There are pros and cons with ceramic pads. If you have black wheels, light-color ceramic dust will be very noticeable. If the ceramic pads are a harder compound than the OEM pads, they may have less initial bite, be noisy, and cause your rotors to wear faster than softer, OEM pads. Many Forum members have switched to ceramic pads so, hopefully, they'll chime in here.
Knocking under hood
