05-17-2016, 07:00 AM
Join Date: May 2016
Total Cats: 0
Oil pressure help!
Hi everyone, i'm new to the site, so apologies in advance if this is in the wrong section!
I'm currently driving a 92 Eunos 1.6 Td04 on 'bandaids
I was driving the car the other day, everything was running sweet, no weird noises, car was boosting fine etc. But one night, I was on my way home and the engine started misfiring! When I got home, I switched it off and I heard a squelch noise, almost as if a pipe had split and you could hear the oil dripping out, I checked and there was oil on the floor, although not a lot! I checked the oil pressure feed, it was fine, I checked the return line and it had a very small split. I temporarily taped up the return line until a new one would come.
After buying new plugs, a couple of days later, I noticed that boost wasn't fully spooling up until 4.5k, when it usually fully spools at 3.5k
I took the car for a spin to see if I could sus out anything, went through the gears and around 5-6k in 3rd, I had lost all oil pressure but as soon as I took my foot off the throttle, oil pressure returned. I took it home, I checked the turbo and the actuator pipe had melted on the manifold causing it to overboost and essentially, damaged the fins my compression wheel... Today, I removed the turbo to check and the exhaust side looks fine, no cracks, chips, broken fins etc on the turbine, but there was a small bit of dirt in the wastegate.(I honestly couldn't tell if it was metal shavings, or just soot buildup, but I'm leaning more towards metal shavings, I was so scared that I didnt pay attention)
Thats the back story!
My questions are,
Why was the turbo taking longer to spool?
What could cause a loss of oil pressure at high rpm?
Do I get a lighter and some petrol and just blown the c**t up?
I understand that the metal shavings off the turbo could damage the engine, so I'm on my way to buy a compression tester, to find out what sort of numbers are in each cylinder
Sorry for the huge backstory, I've got nowhere else to turn and I don't know too much about these engines, especially if I've blown it up!
For any Mx5 genius's that could recommend my next protocol, the advice would go a heck of a way, i'd gladly appreciate it!
Thanks in advance to anyone who helps, I honestly appreciate it