SOURCE: Oil used in a 1992 Isuzu Rodeo
I worked for an Isuzu dealer and we used 10w30. All Isuzu v6's use oil and is normal for 1 or more qts. per 1500 miles per. Isuzu reps.!
SOURCE: 2001 Isuzu Rodeo 3.2 V6 Oil Burning and motor tapping loudly
Do a compression test on all the cylinders and see if the rocker arms are adjusted to the right. If the compression is bad then there will be no power at all and if the Rocker arms need adjustments you could be losing some power there too.
You can try cleaning out the engine from the inside out. I have done this many times when I buy a use car. I run Marvel Mystery Oil with the engine oil for about 4 months and keep an eye on the oil level. Marvel is a thinner oil and clean out the inside by removing the carbon collected and oil sludge inside the engine.
You may end up having to replace the oil pressure sensor, it seams to always be the first to go bad and may get some oil leaks. But once the engine is cleaned up you'll have a better understanding on the condition on the engine and be surprised on how well it runs after.
Just keep an eye on the oil level and change the oil and filter to free up the engine, then use the recommended oil and add Lucas oil and or Restor to help the loose of compression.
The loud tapping tells me that your not getting the oil to the top of the engine and that may be a bad oil pump but it may also be a plugged oil pump screen and the Marvel Mystery oil will clean up the oil screen.
Good luck and hope this helps, Keep me posted on your Rodeo.
SOURCE: 1995 isuzu rodeo hood release broken under the hood
if the grille screws are accessable remove the grille which should give you access to the underside of the lock, you may need a screwdriver to push the lever aside to release the hood
Hope this helps
SOURCE: I have an Isuzu Rodeo 3.2 L when the engine is
if you dont plan on rebuilding the motor then just put some thicker oil in it!
SOURCE: 1995 isuzu Rodeo engine noise
valve guides worn and tappet adjustment required, can check tappet adjustment first to see slightly better before removing heads and getting valve guides repaired/replaced on heads common problem
if raise revs to 1500-2000rpm and hold does clatter come and go come and go (valve guides) if there all the time tappet clearance issue
if there only under load (1st rev up) for a couple of times then stops possible big end bearing
all these are common for this engine
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