!!Warning!! Do not attempt if you do not have patience, or knowledge of your car!
I have bad headgasket so I have to clean my seneloid everymonth to avoid sludge build up. Here is some simple steps to keep vtec in perfect working condition....
-Parts I used where... break cleaner, 1/4 socket drive with extender thats about 6" long, 10mm socket and 10mm box end wrench
-Disconnect neg battery terminal
-Remove air intake
-Disconnect egr, vtec switch, and move black plastic piece that is about a foot long that holds wires and wires that go to fuel injectors couple inches to the firewall
-Remove egr valve for easier removal of seneloid..I forgot the size wrench there are two nuts that hold the egr on
-remove the 3 10mm bolts that hold the vtec switch on..
-Once the switch is off now you can see the seneloid the top two bolts are easy the bottom one your going to have to use your 10mm box end wrench. Have patience you will scratch hand up but its gonna come out!
-Now thats the seneloid is off you can see the screen and the sludge or how clogged it is; either clean it or replace it
-Use razor blade or need to CAREFULLY remove the gasket if you want to replace it go ahead but I reuse mine
-Inside your going to see a plunger and a spring at the bottom; clean all these parts with your cleaner
-Make shure the hole on the plunger is facing the hole that goes to the engine "the hole lines up with the hole your looking at" I have pic for you to see...
-After all clean put everything back in reverse steps, start car and let it idle for about 5mins then take for test drive. Be easy on throttle and slowly get rpms up to where vtec kicks in.
-Clean up and your done! here are the pics
seneloid that needs to be removed
pic of seneloid off and screen...bank three is the screen; bank one has a small hole.. here is where you need to align your plunger hole with the bank hole, yes I know I have metal shavings on my screen.. thats why im building g23!!
pic of back of engine where seneloid went
break cleaner and rubber gloves... break cleaner burns skin so if you get it on skin rinse off with milk then soap and water... milk kills the acid in it
pic reinstalled seneloid
pic of vtec switch plug with yellow green wire
Thats its thanks for looking! If you have any questions im happy to answer them for you