engine washing recomendations - Toyota 4Runner Forum

Bonniem · 01-18-2019, 11:48 AM

Hi all, this question is for off roaders. how do you guys clean your engine and other components under the hood after off roading? what do you use.
Thanks

pDubs · 01-18-2019, 03:36 PM

Never had a problem doing a 50/50 simple green in a windex style spray bottle.

On a slightly warm engine, mist everything, avoid battery, alternator, and other electrical plugs, etc as much as possible, wait about 5 minutes.

Power wash with a lighter nozzle, then just leave hood open to dry for a while.

I remove the engine cover and other easy to remove plastics and do these outside of the truck.

nb rob · 01-18-2019, 04:13 PM

I do the same as pDubs. Simple green in a spray bottle.
Although a long time ago I was advised to start the engine before rinsing, so that there would be no issues starting with a soaked engine bay afterward. I doubt this is required with modern engines with sealed coil packs, but I still do it anyway, and I've never had a problem. The radiator fan really moves a lot of air around and certainly helps with the drying.

MSRP. · 01-18-2019, 04:16 PM

On a recent 5th gen, I would do the above on a warm engine, keep it running (don't stick your hand or tools in there!) and if the pressure washer (fan setting) nets a clean enough result, spray some trim dressing (I use 303 Aerospace), close the hood, and turn off the engine after 2 minutes post-water. If the engine stumbles, QUIT SPRAYING THAT AREA!

After 15-30 minutes, most of the water will have evaporated, and use a rag/tire wash mitt (dry) and mop up the puddles and make the black trim look nice with leftover dressing.