Do a Wet and dry Compression check , wont need to refill sump
did you rotate the engine through all 720 degrees stopping at each rock point when you checked the lifters ?
Printable View
Do a Wet and dry Compression check , wont need to refill sump
did you rotate the engine through all 720 degrees stopping at each rock point when you checked the lifters ?
you could also just run it without the covers - look at the rods and watch the rockers, you should be able to pick up any major problems.
The lobes wear heaps and quick on the 3.5 /3.9 engines, as do the lifters. you'll see the missing lift - if thats the problem.
here's a stab in the dark, it might be worth packing your oil pump with vaseline, in order to re-prime it, it doesnt take very long, can be done in about 20 minutes or so
my engine had lost its prime after not being started for who knows how long (it was out of an old rangie that had been sitting around for years) and once fired up made a noise pretty damn similar to yours, it ran fine, well it idled fine, i wasnt keen to drive it
but after packing with vaseline, the noise faded away in about 10 seconds of running
maybe its worth a try
Peter ... would not be the first time this has happened .... and not my idea of funQuote:
Originally Posted by Psimpson7
A dropped bolt / socket? could also be hung up on the intake valve side ....
Pull the plugs and then rotate the crank ... Grab a wire, and as each piston comes near the top ... Push the wire inside and swish it around to feel for any objects
Have you done the "rubber hose stethoscope" to locate the exact position yet?
Mike
I'm very close to someone that dropped a carby screw down a Chev V8 a long time ago. It sounded like the dark lord himself was trying to escape from that engine. We managed to retrieve it out the plug hole with a magnet on a flexible shaft. Of course it was the second last cylinder we checked!!
My money's on a main bearing. Again, it's that metallic hollowness of the noise I don't like. :cry:
ouch, I hope one of your liners have not come loose. :(
But wouldn't the oil pressure lamp be on all the time?Quote:
Originally Posted by jazzaD1
I had a RR that when I changed the oil filter would not get oil pressure again unless I completely filled the filter with oil.
Sorry to say it does not sound anything like the noise mine made when a cam lobe / lifter
went. I had the smallest of nicks out of the cam and it sounded like a fast high pitched tick, tick, tick, no where near as deep and throaty as yours.
Heard something like this on the forum before. When you park an engine for a few months sometimes a big chunk of carbon breaks off the head and jams in the squish zone at the lower edge of the combustion chamber. Removal methods include a good thrashing or a head off and decoke.
i think its a big end or main sound. if it was something with the cam and valve train wouldn't it be a slower tick as the cam runs at half engine speed and the valves are only going to be operating half that again depending on the duration of the cam grind?
just my 2 cents.