turboguy84

On my LS Vtec the vtec wont activate. I checked the soleniod and it clicks, I know the ecu is triggering it because I connected the wire for vtec to my fan and at 5k rpms the fan comes on. (using zdyne 1 wire vtec) Also I checked my oil level and it's perfect. I even ran a wire from the vtec solenoid in to the cabin and touched it to 12 volts while I was driving to see if it would come on but it didnt.

My LS Vtec oil feed is in right and everything, the vtec used to work before.

HMT-Admin

ha, thats probably because your dyno was so low as well. Vtec just not engauging, take the solenoid off and make sure it's nice and clean, not all clogged up. Vtec circuit is pretty simple with the secu, 1 wire (12v trigger on)

paz

what exhaust are you running? are you hearing any noticable change in the tone where vtec should engage?

turboguy84

Im running a 3" exhaust with a skunk2 muffler and I cant hear it at all, The car gets slow after 4500 rpms

turboguy84

If I am missing one of the bolts to the vtec oil rails would that cause it to not come on?

HMT-Admin

You loosing oil pressure somewhere in the head, pull the valve cover and have someone just crank over the car and see if you can see anything abnormal, like a leak blowing out. I've seen before if you dont put the dowl pin under the center cam cap holder it will leak by and will not activate vtec.

turboguy84

Alright, thanks I'll try tomorrow

turboguy84

I put a bolt in there where I was missing one, I also took the vtec solenoid off and the little filter was clogged with little copper shavings, so I cleaned it all out, thoroughly clean the whole solenoid and put it back on.

The vtec still doesnt come on.

OnYx

metal in the filter? ouch....

HMT-Admin

You did plug off the bottom of the head for the ls/vtec conversion right?

Metal shavings... ouch