When I mistakenly put my orifice tube in incorrectly (backwards), the orifice tube was jammed so far down the tube I almost couldn't get it out. Luckily I was able to but, what I'm trying to say is that the pressure involved will definitely send an obstruction deep into your system.
With high pressure on one side sounds like a blockage somewhere. I had a similar situation only to discover that I was not paying attention to what I was doing and I put in the orifice tube backwards. After fixing that everything works great.
Check engine oil. What viscosity of oil is in the engine? Is the drive belt in good condition, free and clear of everything. Sometimes a belt can become fraid and slap as it goes round. That would be another test, slip the belt off and run it for a moment to eliminate the accessories. Overall...
You can test them with an OHM meter. Not sure what the resistance should be off the top of my head...should be easy to look up the resistance on the web. Then, look for a variance between the glow plugs. If there is an oddball, replace it. I did this for a Mercedes CDI and found a bad one, which...
Went ahead and trimmed the shroud by removing a small section. The lower hose has a separate conduit type sleeve on it so that will help protect the hose from the anything coming off the fan blades. It no longer rubs. I used my table saw to cut out the section.
Hey guys, I Installed the D-Max fan kit when I put my new motor in about a year ago. I heavily trimmed the shroud at that time and I had no issues. Now that some time has gone by, I noticed that the fan is contacting the bottom shroud where the hump is to go over the bottom radiator hose. I'm...