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Old 05-24-2012, 05:11 PM
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VTEC

I don't think my VTEC works anymore. Well, I don't think it has worked for years, honestly. I know it's supposed to engage at like 5800rpm or so, but nothing really happens in my car. Up to 5k she feels fine (as fine as a 222k motor can feel), at 5k, she gets louder and picks up a bit (which I assume is the secondaries opening), and at 6k she starts billowing a nasty, sooty cloud of the typical VTEC oil burning and unburnt fuel. No check engine light comes on, however. Yes, I'm sure that it's up to temperature and the throttle position sensor is fine. No, I haven't checked my oil pressure because I don't have a way to test that. No, I haven't tried cleaning the VTEC solenoid either. If the VTEC solenoid was clogged, would the car still dump the extra fuel required, and not engage the big lobes? Or would that throw a CEL?
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it'll sound like an ultralight airplane or a moped exhaust funneled through a kazoo.
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Old 05-24-2012, 06:39 PM
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Re: VTEC

clean vtec solenoid.....
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Old 05-24-2012, 06:59 PM
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Re: VTEC

....^^

lol. does it really matter what it does if it isnt working? whether it fixes it or not it would have had to be done sooner or later :P
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Old 05-24-2012, 09:30 PM
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Re: VTEC

And at 222k miles, I'm thinking she's clogged. VTEC not working doesn't really bother me. However, she's otherwise in perfect mechanical condition, and I'd like to be able to say in 100% confidence that everything on the car works great. Not that I'm planning on getting rid of my baby, but it's just one of those things...
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it'll sound like an ultralight airplane or a moped exhaust funneled through a kazoo.
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Old 05-24-2012, 10:04 PM
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Re: VTEC



FIX IT! That's so Civic 1.6 right now!
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Old 05-24-2012, 11:41 PM
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Re: VTEC

lolbronies.

Ordering new screen and gasket tomorrow. Gonna clean that whore out. Don't wanna do it without a new gasket; I don't need my car leaking VTEC sauce.
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it'll sound like an ultralight airplane or a moped exhaust funneled through a kazoo.
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Old 05-25-2012, 12:07 AM
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Re: VTEC

add more vtec oil. Its a common problem with older hondas, the vtec juice starts to blend with the turn signal fluid and then it has the same symptoms of a blown head, seen it all the time
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Old 05-25-2012, 01:44 AM
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Re: VTEC

Vtec sauce: readily available at you local Walmart. Use keyword "bwaaaaaah" for a 15% discount!

Let us know how it goes /)(\! /B/LOL!
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SURGEON GENERAL WARNING:
THE IMITATION OF ANY OR ALL MANEUVERS EXECUTED BY A BA B20A 4WS PRELUDE IS HAZARDOUS TO YOUR CAR'S HEALTH. DRIVING A PRELUDE MAY CAUSE LOSS OF INTEREST IN OTHER CARS, WOMEN AND SPEED LIMITS. OTHER SYMPTOMS INCLUDE SLEEPLESS NIGHTS, COLD SWEATS AND OTHER SYMPTOMS RELATED TO ADDICTION. IF THE SYMPTOMS PERSIST,DRIVE!
Prelude: Because all great stories have one. Just like Honda.
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Old 05-25-2012, 05:21 AM
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Re: VTEC

If you cant rev past 6.8K then VTEC isnt engaging. 6.8K is the limit of the non-VTEC cam lobe.
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Old 05-25-2012, 08:47 AM
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Re: VTEC

I don't see how that makes any sense. The computer shuts you down, not the cam. Hell, a less aggressive cam profile should actually be able to rev higher if you really think about it... less likely to float valves. But that's neither here nor there. She revs out to 7800 once she reaches operating temp
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it'll sound like an ultralight airplane or a moped exhaust funneled through a kazoo.
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Old 05-25-2012, 09:49 AM
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Re: VTEC

Your question/statement was

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Originally Posted by Phantom240 View Post
I don't think my VTEC works anymore.
Hitting the non-VTEC limiter at 6.5K (typo before) is certainly an indication that VTEC isnt working. But since you are able to rev to 7.8 then you are getting VTEC.

The changeover is controlled by the ECU. If the ECU senses there is something up (low oil, blocked VTEC soleniod etc...) it wont let you VTEC. Just like if it knows something is majorly up, it will put the car in limp mode.
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Old 05-25-2012, 09:54 AM
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Re: VTEC

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Originally Posted by Phantom240 View Post
I don't need my car leaking VTEC sauce.
LMAO
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Reading this thread was like watching pulp fiction the first time...

Cool quote Utopia.
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Old 05-25-2012, 10:36 AM
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Re: VTEC

If the screen is clogged, the computer will cut me off? I've never heard of that. It's not like the computer really knows what's going on, it just takes signals, determines VTEC is greenlighted, and sends electricity for the solenoid to change position. From there, there isn't anything else for the computer to do except dump more fuel and change ignition timing.
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it'll sound like an ultralight airplane or a moped exhaust funneled through a kazoo.
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Old 05-25-2012, 10:54 AM
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Re: VTEC

No. Please don't go back and foward on this, I was loving this. Back to ingnorance!
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SURGEON GENERAL WARNING:
THE IMITATION OF ANY OR ALL MANEUVERS EXECUTED BY A BA B20A 4WS PRELUDE IS HAZARDOUS TO YOUR CAR'S HEALTH. DRIVING A PRELUDE MAY CAUSE LOSS OF INTEREST IN OTHER CARS, WOMEN AND SPEED LIMITS. OTHER SYMPTOMS INCLUDE SLEEPLESS NIGHTS, COLD SWEATS AND OTHER SYMPTOMS RELATED TO ADDICTION. IF THE SYMPTOMS PERSIST,DRIVE!
Prelude: Because all great stories have one. Just like Honda.
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Old 05-25-2012, 11:07 AM
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Re: VTEC

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Originally Posted by Phantom240 View Post
If the screen is clogged, the computer will cut me off? I've never heard of that.
What do you think a CEL 21 code commonly is?



When was the last time you had your valve clearances checked?
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Old 05-25-2012, 11:19 AM
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Re: VTEC

Wat?



I've never run into code 21 in my 'lude. Also, never had clearances checked. The valvetrain is quieter than most brand new cars, so I didn't pay it much mind.
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Old 05-25-2012, 11:47 AM
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Re: VTEC

The black soot could be inclomplete combustion through valve clearance being out out the optimal limits, or spark plugs etc.. It could be that the car just needs a good service?
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Old 05-25-2012, 11:54 AM
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Re: VTEC

Nah, I keep up with the regular maintenance pretty well. The plugs and related ignition items including coil are less than a year old. The plugs are NGK Laser Platinum, which are the same exact plugs that the motor came equipped with from Honda. It's quite possible that the valves need adjusting. A friend of mine has the tool needed to do it properly, I might pay him a visit this weekend.
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Old 05-25-2012, 01:14 PM
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Re: VTEC

Clean the screen and solenoid first, messing with quiet valves is asking for trouble. Not even valve tap right?
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SURGEON GENERAL WARNING:
THE IMITATION OF ANY OR ALL MANEUVERS EXECUTED BY A BA B20A 4WS PRELUDE IS HAZARDOUS TO YOUR CAR'S HEALTH. DRIVING A PRELUDE MAY CAUSE LOSS OF INTEREST IN OTHER CARS, WOMEN AND SPEED LIMITS. OTHER SYMPTOMS INCLUDE SLEEPLESS NIGHTS, COLD SWEATS AND OTHER SYMPTOMS RELATED TO ADDICTION. IF THE SYMPTOMS PERSIST,DRIVE!
Prelude: Because all great stories have one. Just like Honda.
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Old 05-25-2012, 01:23 PM
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Re: VTEC

Skunk 2 makes VTEC solenoids for H22, Daryl still no halp me though
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Old 05-25-2012, 02:47 PM
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Re: VTEC

Nope, not a single bit of tap. I think she was well maintained (mechanically) by her previous owners. I have a bit of a tap sound coming from somewhere I haven't gotten around to looking for yet. I think it's just an exhaust leak though, as I've been a bad boy and reused the exhaust gasket that was on the car for both headers I've installed.

Skunk2 makes solenoids? I thought they just made solenoid covers... I'd be wary of anything H22 from Skunk2 though.
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Old 05-25-2012, 03:40 PM
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Re: VTEC

Oops, guess the only thing good for the h22, is oem parts. I mean as far as reliability is concerned. Phantom, you lucky, I had to own my GTO first before I under stood all GM V8's have a natural "sewing machine" idle. Damn pushrods, LOL! Derpburban actually fires right up, everytime, 229,307 on the ODO.
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SURGEON GENERAL WARNING:
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Old 05-25-2012, 05:11 PM
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Re: VTEC

My 'lude takes ages to start sometimes. Never figured out why. I think it's got a faulty check valve in the fiel pump
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Old 05-26-2012, 09:42 PM
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Re: VTEC

You could let it prime for 2 seconds. If your fuel system can maintain pressure, (WTH is a checkvalve) it is the battery struggling to turn over. If you don't get the suction noise at Fillups, there's the problem. Hopefully.
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