Slight hesitation upon VTEC engagement?

Post by **Merlin** » Fri Feb 10, 2012 1:03 pm

In my 4G

I have an intermittent hesitation upon VTEC engagement what are the possible causes of this? I have a Spoon ECU so VTEC is at 5K. Foot to the floor / WOT seems to induce a slight hesitation in power just after VTEC has kicked in. You hear the change in engine tone but rev's stay flat, then it free's up and accelerates with max power again.

Any ideas? Dizzy? It had new spark plugs about 2K miles ago. The air filter is clean, as is intake and throttle body.

JayJay · Post by **JayJay** » Fri Feb 10, 2012 1:06 pm

What about the VTEC solenid filter? It sounds like VTEC is coming in fine, but it's worth a shot.

Post by **NafemanNathan** » Fri Feb 10, 2012 1:31 pm

Yeah, my immediate thought was the Vtec solenoid. Give it a good clean.

Post by **Merlin** » Fri Feb 10, 2012 1:34 pm

I'll give it a clean, thanks for the info

2lude · Post by **2lude** » Fri Feb 10, 2012 2:08 pm

Yup what they said 3 bolts and some carb cleaner do not over tighten the bolts when re fitting I managed to snap 1 of mine

Post by **vanzep** » Fri Feb 10, 2012 5:45 pm

If no improvement after cleaning vtec solenoid then it might be down to dirt being dragged up from the petrol tank

Post by **Lude-dude** » Fri Feb 10, 2012 7:19 pm

valve clearance been done recently?

Post by **Merlin** » Fri Feb 10, 2012 8:24 pm

Thanls for the ideas. No the valve clearances havent been done since I have owned the car. They probably have never been redone.

Post by **Merlin** » Fri Mar 09, 2012 12:30 pm

A bit of injector cleaner seemed to have solved it

Post by **NafemanNathan** » Fri Mar 09, 2012 3:50 pm

Simples!

Lude Generation

Slight hesitation upon VTEC engagement?

Slight hesitation upon VTEC engagement?

Re: Slight hesitation upon VTEC engagement?