Recent content by Rocketrob

Hi John, Did you ever resolve this issue?

The oil pan and supply tube screen all looked normal. Note, I have changed the oil twice, once with MMO to attempt to clear the sticking pressure valve, so I would expect it to look clean. Even when I changed oil before this issue, I didn't notice anything out of the norm. At this point, if I...

Foton, Yes, I have verified the correct oil filter is being used, and have tested with a new filter. At this point, I am trying to locate the part. No luck so far at local Napa, they've searched and can't find anything. Strange, considering this engine (Mitsubishi 4G32) was used in a variety of...

@Foton, To your thoughts of lighter or detergent oil. I did try Marvel Mystery Oil, in hopes of that same idea. Free up a sticky poppet. Did not make any change. :(

Still haven't gotten to the bottom of this one, but have discovered a few things: 1. I've verified pressure gauge to be reading correctly, by attaching gauge to known pressure source. And after running the engine for several days this past summer, I definitely get oil leakage around the sender...

Been searching all over for specs on Mitsubishi 4G3 oil pressure. I've got the same issue and am curious to hear how you resolved this? Did you end up finding a faulty pressure gauge, or did you have to pull the engine to replace relieve valve. Thanks