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Location:
Canberra
Registered:
May 2002
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Valve float: What does it feel like when driving? NOW FIXED!!!
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Fri, 03 December 2004 07:46
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I have an issue with my 4AGTE missing over 6000rpm. I've isolated any electrical faults or ignition/fuel inadequacies. The miss causes a significant hesitation, and a popping sound that you can hear from the tailpipe, and sometimes from the engine bay also.
This only happens over 14psi of boost, and gets worse from there as the boost is increased further (normally runs 19psi).
I'm starting to think that this problem is mechanical, and may even be caused by valve float, particularly since it only happens over 6k, with a lot of boost pressure behind the valve. It is an old bigport head that has probably done a lot of km's after all.
I've never experienced valve float & its associated effects, does the above sound like this?? I don't know heaps about valvetrain issues, so please throw your ideas/advice my way! 
[Updated on: Sun, 05 December 2004 02:39]
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Valve float: What does it feel like when driving? NOW FIXED!!!
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TE72_Turbo | Fri, 03 December 2004 07:46 |
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Re: Valve float: What does it feel like when driving?
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mrshin | Fri, 03 December 2004 07:52 |
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Re: Valve float: What does it feel like when driving?
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TE72_Turbo | Fri, 03 December 2004 07:57 |
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Re: Valve float: What does it feel like when driving?
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mrshin | Fri, 03 December 2004 11:59 |
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Re: Valve float: What does it feel like when driving?
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Mr DOHC | Fri, 03 December 2004 13:20 |
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Re: Valve float: What does it feel like when driving?
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TE72_Turbo | Fri, 03 December 2004 13:31 |
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Re: Valve float: What does it feel like when driving?
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mrshin | Fri, 03 December 2004 14:23 |
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Re: Valve float: What does it feel like when driving?
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TE72_Turbo | Sat, 04 December 2004 00:51 |
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Re: Valve float: What does it feel like when driving?
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CelicaRA45 | Sat, 04 December 2004 03:04 |
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Re: Valve float: What does it feel like when driving?
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TE72_Turbo | Sat, 04 December 2004 05:16 |
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Re: Valve float: What does it feel like when driving?
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NVD05X | Sat, 04 December 2004 07:41 |
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Re: Valve float: What does it feel like when driving?
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TE72_Turbo | Sat, 04 December 2004 11:45 |
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Re: Valve float: What does it feel like when driving?
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allencr | Sat, 04 December 2004 20:37 |
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Re: Valve float: What does it feel like when driving?
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oldcorollas | Sat, 04 December 2004 22:59 |
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Re: Valve float: What does it feel like when driving?
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TE72_Turbo | Sun, 05 December 2004 02:39 |
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Re: Valve float: What does it feel like when driving?
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YelloRolla | Mon, 06 December 2004 04:50 |
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Re: Valve float: What does it feel like when driving?
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YelloRolla | Sat, 04 December 2004 23:27 |
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Re: Valve float: What does it feel like when driving?
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oldcorollas | Sun, 05 December 2004 01:33 |
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Re: Valve float: What does it feel like when driving?
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YelloRolla | Sun, 05 December 2004 23:38 |
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Re: Valve float: What does it feel like when driving?
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mrshin | Sun, 05 December 2004 02:31 |
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Re: Valve float: What does it feel like when driving? NOW FIXED!!!
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mrshin | Sun, 05 December 2004 14:44 |
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Re: Valve float: What does it feel like when driving? NOW FIXED!!!
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TE72_Turbo | Sun, 05 December 2004 21:37 |
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Re: Valve float: What does it feel like when driving? NOW FIXED!!!
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Youngy | Mon, 06 December 2004 09:00 |
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Re: Valve float: What does it feel like when driving? NOW FIXED!!!
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TE72_Turbo | Mon, 06 December 2004 12:37 |
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Re: Valve float: What does it feel like when driving? NOW FIXED!!!
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mrshin | Mon, 06 December 2004 09:47 |
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Re: Valve float: What does it feel like when driving? NOW FIXED!!!
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Mr DOHC | Mon, 06 December 2004 10:06 |
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Re: Valve float: What does it feel like when driving? NOW FIXED!!!
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mrshin | Mon, 06 December 2004 10:09 |
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Re: Valve float: What does it feel like when driving? NOW FIXED!!!
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takai | Mon, 06 December 2004 20:25 |
