All over 100 PSI, all within about 15% of each other.

 

So if there under 100 psi something is wrong ? And do I just stick the mech gauge in the pressure sending unit hole?

 

Yep. Under 100 means there is an issue. If you are getting close to 100 (a bit over) an issue is pending..... Either rings, or valves....

Do a dry test first.... then, add a teaspoonful of oil to a cylinder, and test it again. Do that for all of them. Compare the numbers. If you get a big jump in pressures on the wet test, rings are shot.

And again, yep. Just screw the mechanical gauge in where the sending unit is now. Make sure you are careful when routing the tubing for the gauge, you don't want it broken, kinked, or possibly melted in half... spraying oil around a hot engine isn't really a good plan.

 

So it should be 100 on the dot if not something is wrong oh man not a big margin for error

 

100 is min and there is a problem, it should be around 155-165 dry test

 

Fingers crossed then .. Do you thing the temp gauge being 200 instead of 180 an the oil fluctuating a little bit from 20 to 40 could be all one problem? Also my gas guage is always on E haha non related

 

So is mine..... but, that's simply because I can't afford to fill it up.

Do you have a 180 stat in your truck?

Oil pressure should fluctuate with engine RPM.....

 

Yeah I have 180 super stant new sensor new gasket new hoses new cap new fluid change x4 let it burp with truck left side lifted for an hour up a hill down a hill idling with cap off I can't think why it goes to 200 and stays there with a 180 stant tstat...
Things that I can think of thr might affect it SCT tunner , it has under drive set up so it's bigger then normal....

As for the oil gauge truck start at 40 lbs then after warms up goes to 20 lbs and kinda bounces to 25 and back to 20 till I hit the gas then back up solid to 40 till next idle then back down

 

What type of oil are you running?

 

Royal purple 10 w 30 with zinc additive as suggested for the 1.7 roller rockes break in