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Do NOT spray water straight out of a hose and into your engine bay. Neo's seriously do not like it.

Use a cloth and lots of elbow grease.

Out of curiosity, what would be the consequinces if I hosed it directly? Can I use a small container to pour water and soap away?

or take the coil cover off, hose away to your hearts content, then get an air gun and blow all the water out of the coil valley and then go for a decent drive to boil off any left over water before you put the cover back on.

To reach the coilpacks in the R34 neo's you would need to take off the manifold and some piping, which would take ALOT of time and effort to dry out if you got water in there.

So as people mentioned, elbow grease and a cloth should be the better option.

This is my tried and tested method on both my current 34s, and has been on all of my vehicles for 15 years and mates cars, never had a drama!

Cover your intake, jam an old rag in there or tie a plastic bag over the pod filter, lay some old towels over the rocker cover/valley top of the engine area just to be safe. (if no valley cover is fitted be extra careful to avoid water getting into the coilpack wells) same would apply to old carburator and dizzy setups!

Buy 6-10 cans of degrease and a can of electrical conctact cleaner from autobarn/supercheap!

Go hard and hit all the areas of the bay with the degrease, it will not matter if you spray the engine loom or any of the plugs as long as the key is not in the igntion ON position. Hit all the hard to get to areas like the fuel rail and injectors, the fuse box external connectors (these always get serious build up can take a few cans to move it all away) get right down/under the sides of the block areas (the drivers side is always more dirty than the passenger side) you can spray anywhere below the rocker covers really and it will not cause you any dramas, even spray the powersteerring box and plugs on the passenger side at the rear of the bay.

You can hose down the engine bay as long as you have a controlled hose head and turn it to the jet position, just make sure that you give some distance between the parts you are spraying down and the water and don't constantly aim at the same place, just wave the water around the areas you want to hose off, dont use a high pressure water gun! (I do but am familar with this process) Just avoid spraying above the rocker cover/gaskets and you will be fine!

Once done hosing down let the bay dry for a while and start wiping it down to remove the grease buildup that may not have come away (use a rag dipped in degrease for this), water cannot get in anywhere as there are gaskets and 0 rings which prevent this. To finish off make sure that all your plugs contacts are clean and water free, just unplug all connectors and give them a good squirt with the electrical contact cleaner, this is something that should be done anyway periodically.

You should now have a gleaming engine bay and it will be nice to work on!

Think of it like this, 4 wheel drive vehicles fitted with a snorkel can almost be submerged up to the bonnet and no water ever gets into the actual engine! The only reason a car would stall in this scenario is because the air intake has sucked in water!

Think of it like this, 4 wheel drive vehicles fitted with a snorkel can almost be submerged up to the bonnet and no water ever gets into the actual engine! The only reason a car would stall in this scenario is because the air intake has sucked in water!

But these cars are usually diesel and have simple ignition systems. Old girls only have a single wire feeding the fuel solenoid and the rest is mechanical. Our skylines are more sophisticated. People have dramas with coil packs when they are dry let alone adding water to the situation.

But these cars are usually diesel and have simple ignition systems. Old girls only have a single wire feeding the fuel solenoid and the rest is mechanical. Our skylines are more sophisticated. People have dramas with coil packs when they are dry let alone adding water to the situation.

^^^this

What is simple about a Petrol 4X4 NISSAN PATROL with fuel injection and a turbo system, infact it is way more sphisticated than a 1998 skyline in every way/form.

Well a complex petrol patrol can't just sit in water running for long. Need to prevent/reduce water getting into the dizzy. Loosen belt for viscous fans. Guys who do it regularly have taken preventative measures and even then it only reduces incidents not prevents them.

Your method has worked for you but people are simply recommending not to hose down incase something goes wrong and OP has problems with his car. it might be fine, but has caused many people dramas before

I owned an RB30 EFI patrol and that thing got fully submerged above the bonnet almost daily through winter, worst problem I ever had was if it sat for too long. As for engine bay cleaning I usually stuff rags soaked in WD40 around the coil packs, spray degreaser everywhere bar the coil packs and use a pressure washer to spray the crap out of the engine bay. At worst I get rough running for a bit till shit dries out. It's never bothered me though.

Yep I used spray degreaser on the engine bay and use a high pressure washer but just make sure I dont spray too hard core are spark plug valley & air intake, I have the motor running while rinsing I do it so it dries quicker, heats up grease and oil to come off a little easier and also if the motor sound changes I know Ive soaked an area too much...

I owned an RB30 EFI patrol and that thing got fully submerged above the bonnet almost daily through winter, worst problem I ever had was if it sat for too long. As for engine bay cleaning I usually stuff rags soaked in WD40 around the coil packs, spray degreaser everywhere bar the coil packs and use a pressure washer to spray the crap out of the engine bay. At worst I get rough running for a bit till shit dries out. It's never bothered me though.

coil packs on a RB30? are you running after market ecu and ignition as factory 30s run a single coil mounted in a position where they are not sitting in water

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