Maintenance & Repair 350Z up keep and diagnosing/fixing problems

Washer fluid not spraying

Old 02-08-2019, 03:59 PM
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Location: Kauai, HI 96766
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Originally Posted by 350havok View Post
Here's an update. Take wheel and inner fender off to access the washer tank and pumps. All seemed fine, so I disconnected the front hose from the pump and from the front nozzles and sprayed compressed air through it. It didn't seem to have any blockage. I reconnected the hose and turned on the key and tested the washer. The front nozzles sprayed water just like when new, all the nozzles were spaying a strong jet of water. I put inner fender and wheel back on. Later in the day the windshield was dusty, so at a stop light I pulled the stalk to activate the washers and to my surprise nothing happened. The wiper blades moved but only a trickle of water came out. Back home, with the engine off I turned on the key and pulled the stalk to activate the washers and they worked like new, powerful jets of water from all the nozzles. I am at a loss as to why with the key on but engine not running, the washers work fine, but with the engine running they don't work. Any one have an explanation?
Aloha 350havok,

I'm new to this site with this car ('05 350Z convertible) and I have the exact same washer problem that you described. With key on, engine stopped, good fluid stream out of both wiper arm jets. With engine running, a little better than a dribble. It doesn't make sense and defies logic because with the engine running, you would think the washer stream would have even a little bit MORE force since the washer motor now has about 14 volts feeding it instead of just the 12 volts it would have with engine stopped.

Was wondering if you got any further with some answers to this issue, or had any additional insights of your own.


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