Got assigned to this today. 98 jag,102000 miles. Did a leak down and the valves seem to be ok.
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Broken timing chain in a v8 jaguar
- Thread starter Chris142
- Start date
GON
$150 Site Donor 2025
This 1998 with 106k miles same issue.
Is that considered an interference engine?
... No need to reply, I figured it out.
... No need to reply, I figured it out.
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What all are you going to replace and at approx what cost, if you can share?
Do Not get involved in that POS, Some hack's already been in there judging by the blue RTV & the dozen worm drive clamps.
Not my choice lol. Oh and orange silicone on the other head
Cars a POS. I heard they want to do just the 1 chain and the tensioner but will know more tomorrow.
Glad its not me working on it.
AZjeff
$50 Site Donor 2023
When you were a mech in a shop you didn't own did you refuse work?
Learning experience Chris. Do the best you can and have someone sign off on your work for when it comes back.
GON
$150 Site Donor 2025
It's a shame, seem like very nice cars. Funny both Jags timing chain failed around 105k miles. Wonder if a thicker oil, changed every 2k miles would have made a meaningful difference?
My 2007 F350 with the 3V 5.4 went 200k with zero signs of timing chain related issues. I credit (speculative) this to using high quality oil of a higher grade, and very frequent oil change intervals.
Sounds kind of like the V8 Taurus SHO that the cam swedging would let loose on the cam chain gears trashing the motor and Ford did not have parts for. And denied warranties until enough happened they couldn't. Some failed before they left the lot.
Yamaha built the heads and assembled the engine with a Ford block but I suspect the swedging was Ford's idea.
Yamaha built the heads and assembled the engine with a Ford block but I suspect the swedging was Ford's idea.
Hate to say it, but 98 Jag in Apple Valley kinda explains it all...
OVERKILL
$100 Site Donor 2021
Interesting that he doesn't do the leak-down to see if the valves contacted or not like the OP did.
You have that right in California as a mechanic.When you were a mech in a shop you didn't own did you refuse work?
Learning experience Chris. Do the best you can and have someone sign off on your work for when it comes back.
Your 2000 would have had a different set of issues than a 5.4 3V.
I was referring to the Jag 4.0.
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