Hi Can A laptop be connected through ECUtalk to nisstune or Must a consult cable be used? Also how high is to high for oil pressure when cold. I'm getting 85psi when first started on about a 10 degree day
I connect a cable from my laptop to my ECUtalk lcd unit and connect to nistune like that. Just go into your ecutalk and set it to usb mode.
OK cool, what grade oil are you using? I am getting a few spots where there is a green showing around places where there shouldn't be. Such on the outside of the oil filter oring and oil braided line going to the turbo. I dropped the oil and there seems to be now coolant in the oil? little lost.
Coolant in the oil bloke is not a good thing. Has the oil started to go milky yet and how is the oil filler cap at this stage? Also any oil smear in the radiator fluid, look at the radiator cap and see if there are any signs of oil contamination. If there is you are not going to have a good weekend.
I use Valvoline Durablend Semi-Synthetic blend 15w-40. You positive you have green coolant in the oil????? Just coolant around the bay indicates a cooling system leak somewhere. E
I dropped the oil and no sign of coolant in anything. it is just showing up in the bay in horrible places like on the top rim of the oil filter against the oring and on the crimp of the turbo oil feed hose. hopefully i am just being a bit para. I will go searching for a leak. it is not an obvious one though. on another topic. What are the most common places for an oil leak on the passenger side?
Is yours a TT or an NA M8? Itll help to narrow down things. I have an NA so I dont have a fair few coolant lines to turbos and things. Coolant and oil leaks can sometimes be hard to find as the fluids can be blown around the engine to quite strange places V's where they actually leak from. If you can, clean off all traces of coolant you can find. Have the car up on ramps for several hours to have a cold engine and so you can get underneath it. Light it up and wedge one of the throttle butterfly stops open with a stick or something to hold the revs around 2500 rpm and heater OFF. This will warm the car pretty quickly and cause the water pressure to rise quickly and might help show up any leaks more obviously. Somebody pokes around topside and some poor sucker lays underneath for 10 minutes poking around with a bright torch!!!!!!! Good luck E
The viscosity of the oil you should be using, is relative to the ambient temperatures the vehicle will be operating in. Details can be found in the Nissan Service Manual. If you suspect a coolant leak, pressure test the system, it's that simple.
Yep is TT fount the leak, is the feed to the driver side turbo. How do you know if if the oil pressure relief is working. I did a oil change on the weekend, I used 10/30 oil and my oil pressure has gone from 80 psi when cold to 120psi. Getting to the stage where the oil filter would be flexing. whats people thoughts. I think this is getting to high.
According to the NISSAN Factory Service Manual: At idle the oil pressure should be more than 11 psi. At 3000 rpm the pressure should be between 51 & 65 psi. These figures would relate to the engine being at normal operating temperature. 125 psi is a lot! Is your gauge accurate? Are you measuring the pressure at the correct location?
have a sender mounted at the filter location, i presume the gauge is ok it is only new but i cant remember the brand of hand. i have talked to a local mechanic that did his time on prestige motors and he recommends going to 5/30 for a while. Since it is winter and see how it gos.
5W is too low. The VG in stock form, let alone stock "worn" form doesn't have the tight tolerances for such a low weight. If you've built your motor, use the weight your builder recommends for the tolerances. Your cold pressures are abnormally high, and it's not from the oil weight. Check with another gauge.
Mine was never past 80-90psi on cold idle running 20W-60 so I'm guessing that's about where the pressure relief is set. There's three relief/bypass valves in a TT oil system, an over pressure relief in the oil pump housing, a pair of filter bypass ball-valves in the filter tree and the oil cooler valve which from memory opens somewhere between 40 and 60psi but isn't going to account for much flow. I'd get the pressure checked with a calibrated mechanical gauge at a workshop before digging deeper.
Thanks guys I have a good mechanical guage I will temp fit that and see where we go from there. Its all a bit strange was ok untill I did an oil change and then it went through the roof. It was at 80psi on a really cold startup. now its gone of the planet.
