R34 Skyline Having Problem Starting After Washing Engine Bay

[sturb25]

Im wondering if anyone can help

My mate decided to wash his engine bay the other day and when he turned the car off the car just died half way through the turbo timer countdown. He tried to start it and it wouldnt start and when it eventually did it idled very low like around 400-500 rpm and was constantly dieing. We turned up the idle screw on the throttle body to get it to run at around 750-800rpm.

Took it for a drive, everything seemed fine but when we turned the ignition off it did the same thing, was really hard to start.

I turned the idle up even more and it seemed to only have trouble starting when it was left for a while

Its obviously got water in somewhere so we pulled the coil pack cover off and all the coil packs were bone dry, undid every electrical plug that we could see and blew it out with the compressor, cleaned panel filter just incase any water got in there.

Still the problem is there. Any suggestions?

[Hanaldo]

Starting problems are always going to be fuel or spark related. Given the circumstances, it's pretty safe to assume it's going to be spark. So you shouldn't have to adjust the IAC or anything else. Start by checking your spark, see if it's good or weak or just not there at all. My money is on the crank angle sensor.

[gotRICE?]

Its probly pure coincidence that its happened just after you washed the engine bay. I wash mine all the time, have done all of my cars and never once had a problem. But you should always be sensible where you point the hose.

Im with above. Either that or your fuel pump has died/dying.

[Carbon 34]

Its probly pure coincidence that its happened just after you washed the engine bay. I wash mine all the time, have done all of my cars and never once had a problem. But you should always be sensible where you point the hose.

Im with above. Either that or your fuel pump has died/dying.

Nissans and tap water is a bad idea , nissan connections fail really easy once corrosion sets in

Could be ten things , most likely coil pack harness

Or injector harness, cas or tps , wouldnt be fuel pump unless it was a fluke

could be afm as well

Sometimes just letting it sit fixes it once it dry again ?

my moms 120y engine block had a inch of grease on it but never faulted her, i drove it once and washed the grease off it never ran right again lol like a blanket of sludge haha

you really have to use care or its trouble chasing corrosion