|
Joaquin,
Thanks, if in my city the temperature going to 104 degrees, it will the main subject on local newspapers. Usually (without counting "La Niņa" years) we have here between 55 and 90 degress along the year, with a mean of 60 on winter and 80 on summer (autuum and spring are near inexistent).
I would prefer 20W-50 oil year-round in those temperatures. It's not too "sticky" -- remember it's still only 20W when cold, lighter than the originally recommended 30W.
Your pressure gauge seems plenty accurate enough, but there's still a problem somewhere. Typical oil pressures for a healthy motor are 70-80 psi at a cold idle, and it should stabilize there immediately upon start-up. Fully hot idle should be 40-50 psi.
I believe my bad ignition make insufficient heat on part of the engine block, and due it, the oil was not totaly fluid.
No... spark does nothing to heat the engine. Heat comes mostly from combustion, and secondarily from friction. Efficient combustion makes the engine run cooler, not hotter.
In some weeks a friend of mine goes to Europe. and he offer to adquire one of that transparent sparks for see the color of the flame into the cylinder.
That checks the air/fuel mixture, not ignition. You should be able to check the mixture from the spark plug color without that.
Then I will check with it if my advance setting (made with a strob light) is adequate.
The best setting will make the engine run cooler. I don't think any of this is related to the oil pressure irregularities.
|
