hi I have a 4jg2 wizard. the oil pressure gauge shot through the roof within 50m of home. saw the gauge at about 9kg/cm by the time I stoped and turned it off the gauge had maxed, with the engine off it dropped slowly, on start it came to about 8 and sits there. used to always be between 3 and 6. anyone know what happened? did my sender just die?
Thats the million dollar question. If it is due to a blocked bypass or even filter then there is no oil getting to the rest of the engine. If it is that high and still getting round the engine it could blow the lines off the turbo and cause seals to leak. If its the sender no problem. If it was me I would temporarily fit an aftermarket guage where the sender is and see what it thinks. Senders normally fail to zero
Sanding your knuckles before starting work can help. That way you cant skin them
so I changed oil and filter, helped a bit, now idles just below 6 but goes to 8-9 when I try to drive. still not game to go anywhere. how do I check and/or clean or replace bypass valve?
GTX was a good oil but unless its the diesel version its not suitable for this engine. Diesel creates much more rubbish in the oil so you need an oil designed to cope with it
Sanding your knuckles before starting work can help. That way you cant skin them
doing an image search of 4jg2 filter housing shows unit has 2 bolt heads one is 22mm the other 24mm (checked by fitting socket to them) either one of them is the valve I think hopeing it could be as simple as removing and cleaning not sure if I should do this or not
that didn't solve the problem. must be a blockage or restriction after the gallery in oil circuit will try engine flush I really don't want to have to pull engine apart I hope no one else ever has this problem
ok will try that too I was ruling that out coz of the 'senders normally fail to zero' comment and what a sender does, seems it could only fail to zero. I also don't think its a faulty gauge as the engine told me there was a problem (a kind of shuttering didn't want to run) it idles fine and revs in park but with higher than normal pressure just when it is in gear and moves it goes haywire
don't know why or how but I just gave the earth wire terminal connector bit a shine up and everything back to normal glad I didn't do a flush as I read it can create more probs thanks again
Its one of those rare faults that never makes sense. The clue was it being worse moving. You would think that that earth would stop the engine starting but there are several places it can get an indirect earth. I read a report years ago about failing auto transmissions where the insides were showing evidence of electrolysis. They couldnt be saved. The cause bad earth strap on the engine. Wizards are all auto from factory
Sanding your knuckles before starting work can help. That way you cant skin them