Slows2k

It's virtually impossible for the VTEC to not function and you not to have a CEL.

Ek9

So, it senses whether the solenoid kicks in and sends oil pressure to the to the lost motion dohicky's? I didn't know that.


I've noticed that vtec engagement's pretty subtle on my '2k. It's not the "force me in my seat" engagement of my civic.

4cpu

your civic forced you into your seat?

Anyway, I have a question regarding variable timing for the valves. I understand that you can optimized normal valve timing for low end or high end rpm's. Variable timing allows for both. My question is regarding where is it optimal. I don't know why it should be a fixed #.

miken5678

compared to the prelude and early model vtec cars the engagement on the s2k is quite abit smoother.. also from the dynos ive seen it doesnt have the huge dip before the engagement point

vtec9

In the future do not use Fram oil filters.. not that this would cause the problem. Just use Honda PCX-004 Filters from the dealer

stylinhonda

Werd. Fram filters are horrible. I have heard nothing but problems from them.

melonheadr6

A shot in the dark but you can try resetting the ECU.

Kyushin

Well if you have switched to Synthetic, then that seriously smooths out the vtec engagement so maybe this is what gives the impression, being that have not noted a CEL

silverap1bullet

Car hardly gets driving so I will take it out tommorow and then screw around with it and if no luck its still has warranty

RED MX5

There is a screen in the VTEC valve that might be clogged.