Hey Gang I'm a new LR4 owner...???
and so far I'm a little perplexed!!!
ok here it goes..
I'm pretty handy !st off. so I bought a 2010 LR4 from Copart ( an aution site ) My Bad!!!!!!!
my main situation is NO COMPRESSION or very little.
1st I put a brand new Battery in. ( old one would not hold a charge for more then 2 cranks )
2nd It now turns over but the motor just spins. I can see the timing chain spin looking into the oil fill and the fan spins but oddly NO RPMS REGISTER needle goes up just a tab.
I also squirted Starer Fluid down the air intake.. No Firing
3rd Ran the scanner from the shop across the street NO COEDS (Figured i just replaced battery and cleared all)
4th I pulled the easiest to get to spark plugs (drivers side front 2 closest to the fan) put a compression tester on them the most forward measured only 15 PSI and the second one only 5 PSI
At first i thought i needed a camshaft positiing sensor but now no compression ???????
any Help would be much appreciated
Jay Jay

 

To me that seems like a timing chain failure/jumped timing.

 

Hey Dakota thanks for your input. so I'm assuming i probably have some bent valves that go along with that.
does it mess up the heads..
timing would need to be completely reset..

ughhhh..

 

I would suggest verifying timing and maybe taking a video scope inside a cylinder. I've not worked on that engine, but most can be verified with a valve cover removed to check cam positions against crank position.

 

thank you D.
much appreciated.
Jay

 

One of your heads has bent valves, you'll need to determine which bank (side) it is on. Do a compression test on each side. Replace bent valves, headgaskets, timing chain & related components.

 

ugh thanks
looking forward to the repair