I have done a TON of work to the truck in the last 4-5 months trying to cure what seemed to be a slipped liner - and I'm pretty certain I succeeded.

'04 Disco w 190K. Wife's DD since new. Pretty much a dealership queen up until about 3 years ago when they wanted $4K + for head gaskets - that's when I started working on it. Wife got a new ride in Feb, and I've been trying to bring the Disco back to its former glory ever since.

Part of the recent work was a new cam and lifters, all of the work listed here - https://landroverforums.com/forum/di...ick-why-75434/

In chasing down a new - and different - tick, I opened the engine up again (amazing how easy it seems when you've done it a few times) to take a look at the rocker arms and lifters. I found the source of the tick - dished and scored lifters. They look way worse then the originals that had been in there for 188K! I'm sure the cam is toast too.

Bad quality parts or did I somehow screw up the install? She ran great - and completely tick free - for about a month and a half before developing the lifter tick - seemingly overnight.

Any and all advice would be much appreciated.

Thanks

 

the obvious question would be did you use cam lube? did you use break in oil? did you fill the lifters before installing them? did you let it run for 25 minutes at 2500 rpms? or whatever your am manufacturer suggested to break in the cam?

 

After checking the obvious that drow mentioned above, I would also look at the oil pump gears if you have not replaced them yet. Maybe you are getting poor oil circulation causing premature wear. I changed mine at 96K miles while doing the front cover gasket and water pump just because I would be in there. I wasn't having any issues that would of pointed to bad or cracked gears but when I opened it up, sure enough, they were cracked in 2 places. It seems to be pretty common for the gears to crack so at 190K miles and you starting to put new internals in the engine, I think it's worth it to check your oil pump out.

 

Yes on the cam lube, break in oil, and filling lifters. No on the 2,500 RPM for 25 min - could that have done it? The more I think about it, the less I believe it was bad parts. One lifter - maybe. I'm convinced I smurfed it up... Thanks.

 

New front cover/oil pump. Good pressure at idle and 2K RPM cold and at temp.

 

Not running it in properly could cause that. It seats the 2 new surfaces together and hardens them to each other so to speak. Wear in is a very important step with flat tappet lifters.

 

you need to run the cam in, it hardens the surfaces of the lobes and lifters, every cam manufacture has there own style.
it is usually run for 20-30 minutes at 1500-2500 rpms,as soon as it starts. but each has its own recommendations.

 

Thanks. I'll be sure to do that - the second time around... DOH!

 

Check your cam also, to make sure it has not worn down the lobes.

 

Thanks, but I think that's a given (that its worn). Even though it's just a couple of months old, I wouldn't put new lifters in without replacing the cam. I'm a glutton for pain...