Vtec dropping out

[leech]

Hi,

When i'm acceerating my vtec wont come on or drops out thru out the rev range. sometimes it will engage like normal at 5200rpm but other times its later or not at all and sometimes it engages but then disengages. Just wondering if this is because the vtec solenoid is dirty or because it needs a service

cheers

[locote]

Have u done all the usual checks???

Or like u said ur car needs a service???
I had same problem when i 1st got my B18c, the problem was the oil used in my motor was S';%T

[leech]

what are the usual checks?
also what oil should i use in my b16?

[locote]

Honda oil mate....
I think theres a sticky on what to do if your vtec is not working properly.
remember vtec works based on oil pressure, if theres not enough oil then there wont be enough pressure to activate it..
I also imagine if the oil is old a crappy same principle will apply.
Try to eliminate what could be causing it by checking and changing what needs to be replaced.

[leech]

ok kool, i will do a service on it today after work, should i clean the solonoid anyway?

[locote]

I used degreaser on my cause it had all black black build up, it wouldnt hurt mate

[leech]

so how do i clean it then?

[EG30]

checked your oil level?

[incoming]

are u sure it drops out?
or did it just fall off?

serioud note: do a ECU check to see if it throws any codes
search ECU check

[leech]

cant do a ECU check cause of aftermarket ECU. what do you mean did it fall off?

[misterpoh]

Hi,

When i'm acceerating my vtec wont come on or drops out thru out the rev range. sometimes it will engage like normal at 5200rpm but other times its later or not at all and sometimes it engages but then disengages. Just wondering if this is because the vtec solenoid is dirty or because it needs a service

cheers

Oil Pressure maybe?

[V_tec 4 life]

my mates type R v-tec use to kick in late or sometimes not at all
the problem was that he was running low oil in the car .... he did a service and it was running great after that !

If your car has a good amount of oil in it already then id get it cheaked out by honda or somebody who has worked on v-tec motor's before

[locote]

cant do a ECU check cause of aftermarket ECU. what do you mean did it fall off?

Not a Honda ECU. maybe your vtec engagement points werent set properly.

[leech]

nah its set right, i've owned the car for over a year now and its always come on at 5200 revs. Anyway i just changed the oil - it was pretty black. After i put new oil in i took it for a run and it seems to be working fine again, also i have never had honda oil in the car but this time i used it and it feels like the engine is smoother when idleing. Now i just gotta get the oil of the ground because the cheap oil pan i got leaked :(

[scottyj]

this happened to me and it was cos i was very low on oil - filled her up and she was fine again!