SOURCE: replacing oil pump on 92 4x4 isuzu trooper
undo engine mounts jack engine up as far as it will go
SOURCE: my 1992 isuzu trooper is leaking oil
clean your engine and look very carefully where the oil leak really come from, the cause why this leak happen, the engine was shutdown while the engine temperature is hot. usually the leak will come from the turbo. the engine must be idle for 3-5min before shutting off.
SOURCE: How do I get the oil pan off to replace the oil
try these websites www.autozone.com and www.alldatadiy.com if all fails stop by your local library and get your hands on a Haynes auto repair manual for your SUV or stop by your local dealer in the parts department.and have them to print you out some diagrams.
SOURCE: 1997 Rodeo: need to replace my oil pump on 1997 Isuzu Rodeo....
v6 No they dont go bad. Clean the oil pickup screen.
SOURCE: my isuzu dmax oil pan
In order for that dent to have any real effect upon oil delivery, the dent would need to be perfectly flat up against the oil pump pickup. Chances are it isn't. The pickup in most pans is located a bit above the pan bottom to lessen the chance of ingesting any contaminants (sand, grit, hard carbon etc). With the clearance diminished, chances of that are greater.
While only oil pressure is measured, volume is also important. With the pan that close to the pickup, pressure probably won't be a problem but you may loose some volume (impossible to tell how much).
When I put together a fresh engine, I like to see pressure of about 40psi or better. As an engine wears, engineers claim that anything above 15psi is OK...I use a higher number of 25psi (at idle) as a minimum "safe" limit. Anything below that, you know you have a problem and it's wise to find it early and fix it. (Pumps rarely fail...most low pressure problems can be traced to engine bearing wear, resulting in bleed off past the bearings)
As for your pan: If the pan is bent, and you have it off the engine, why not hammer the bend out a little? or, better yet, get another pan from a scrapyard and replace it entirely?
If you have not removed it, there's no real way of measuring and what you are seeing may not be the whole story...pickup clearance may be greater elsewhere. In that case, just continue doing regular service and save pan replacement for a day when you have time to do it.
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