Mechanics

WINDSHIELD WASHER RESEVOIR - VACUUM

1992 Nissan 300ZX • 100,000 miles

The windshiel washer resevoir inthe rear deck lid, drivers side of my 92 300 zx 2 door / Non turbo has been " hissing" for about 2 weeks. So I filled it with fluid and the system still does not spit wash to my windshield, though the light on the dash went out. PROBLEM - after running the car for 2 minutes I heard a KNOCK, like someone knocking bowling balls together (just one knock) and I immediately shut off my engine. Under the left side of the intake manifold ( right where the are is brought into the top of the cylinders ) in the engine compartment I now see blue water drops coming from what seems to be outta nowhere? Any ideas before I attempt to start the car again? The engine had been swapped out about 2 years ago and I think a vacuum has sucked the wash fluid to the wrong spot. Thanks -Sean


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SULLYZ300
November 28, 2011.



You might. But the knock could be form anything really


Hmac300
Nov 29, 2011.
Once the wash fluid got to the manifold it was a noticable loud knock that was definately out of synch from the RPM of the engine as I shut it off.


Tiny
SULLYZ300
Nov 29, 2011.
I cannot offer you any other suggestions. I can't hear the noise so I can't really tell you what it is.


Hmac300
Nov 29, 2011.
I guess ill just have to try and see tomorrow. In my novice guess it almost sounded like the timing jumped when the water caused a cumbustion glitch which then caused the piston to maybe hit a valve? Guess, which I hope is wrong.


Tiny
SULLYZ300
Nov 29, 2011.
So I tooled around today and followed the rear resevior hose from the right wheel well up and over and around and someone hooked it up direct to the #14 AIV Control selonoid to balance tube which is attached to part # 5 fuel damper to balance tube. RETARDS ! So the hose was basically pushing washer fluid direct into the air manifold (like NOS but wash fluid instead) - I think about 2 ounces made it into the chamber all-in-all. I then hooked the washer fluid hose up to its rightfull location and now it works fine and sprays the windshield as desired. I wonder what the colateral damage may be? Ill wait till tomorrow to try and start the car. Should I expect anything or just prepare for the worst? Should I spray any carb cleaner or booster in there to counter the water / fluid? I left the throttle propped open though I dont think it wil help other than mentally.


Tiny
SULLYZ300
Nov 29, 2011.
I really don't know if you have everheard of water injection, it's beenarond then goes then comes back but start the damn car up and if it still knocks then take it to a pro who can give you a professional opinion. I really dont' think there is much damage there at all.I can offer no further assitance and glad you found the mistake.


Hmac300
Nov 29, 2011.
Ok ill do that tomorrow and I thank you for your help, you have been an allstar. Should I cap that port/nipple that im pointing to in the picture. There is no hose or purpose that I know of. That will be my last question. - Sean


Tiny
SULLYZ300
Nov 29, 2011.
Yes told you to do that a bout 4 messages ago otherwise you 'll have a vacuum leak


Hmac300
Nov 29, 2011.
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