cant find oil leak, HELP!! and not boosting well. knock sensor help, PROBLEMS!!

Discuss topics related to the CA18DE and CA18DET series engines.
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KEMP
Posts: 371
Joined: Sun Nov 02, 2008 7:23 pm
Car: 1990 240sx CA18DET

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im leaking oil from the intake side of the motor, i have no idea if its coming from the valve cover relief, or what, its leaking decently, but not pouring.

i just did a head gasket job as well, and i know that the hard oil line going to the oil filter housing goes to the valve cover relief, but i do not know why it would leak so bad from that, can anyone shed some light on that?, i also do not currently have the knock sensor out because i broke it and im poor so i cant get a new one yet, would oil come out of that hole?

also what could the knock sensor do to my performance. i am running and external wastegate with hks evc 6 boost controller, its not boosting past wastegate pressure, any ideas?

thanks.


Anu
Posts: 52
Joined: Fri Dec 19, 2008 1:39 pm
Car: Nissan 200SX s13

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The hole for the knocksensor is not connected to the oilcircuit of the car as far as i know, so I dont think the leaking is comming from there, did you replace the rockercover ( I think its the correct english term :P)gaskets and tighten the screws? I've had the cover leaking oil because the screws got loose.Just clean the blok, and check where the oil is comming from I guess.Also if your car is tuned correctly, the knocksensor should not have any influence on performance. Only when the sensor is detection knock, it will change the timing ( I thought it was the timing, not 100% sure though).

slideordie85
Posts: 190
Joined: Thu Jan 15, 2009 1:27 pm
Car: 240sx

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I know I had a leak in the intake cover coming from the back and it had caused oil to seep and a wierd idle. Eventually I just pulled the hose and replaced it.


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