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CR-V::Clinical Rounds Routine maintenance, problems, solutions and repair

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  #1  
Old 11-05-2011, 04:06 PM
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Unhappy Acceleration "stuttering"

My '02 CR-V 5-speed manual drives well most of the time, but as the engine warms up it will start to "stutter" as revs climb past 4500rpm. The stuttering feels like a misfiring cylinder.

Does this vague description lead anyone to agree with me that it could be a fouled spark plug? Or is there something else I should check?

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Old 11-05-2011, 07:44 PM
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If yours was an autobox, a search for 'stutter' or 'shutter' would suggest you may need to change your tranny fluid, probably three times.

Since it's a manual tranny, are there no indications from your ENGINE light? Is it working at all?

Pulling the plugs would tell you LOTS, and maybe you'd find the wires are no good, or somebody already replaced them with the wrong brand (Bosch ? )

Do you run injector cleaner (or at least Gasohol) through the tank seasonally ?

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Last edited by 'Curly Q Links'; 11-05-2011 at 07:46 PM. Reason: Do you run injector cleaner
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Old 11-05-2011, 07:56 PM
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Quote:
Originally Posted by 'Curly Q Links' View Post
Since it's a manual tranny, are there no indications from your ENGINE light? Is it working at all?
No light, and yes it works (had to clear an error about a year ago). My ODB reader shows no errors.

Quote:
Originally Posted by 'Curly Q Links' View Post
Pulling the plugs would tell you LOTS, and maybe you'd find the wires are no good, or somebody already replaced them with the wrong brand (Bosch ? )
I'm going to check the plugs tomorrow.

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Originally Posted by 'Curly Q Links' View Post
Do you run injector cleaner (or at least Gasohol) through the tank seasonally ?
Annually, yes. I don't think this is fuel-starvation. The symptoms don't fit.
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Old 11-05-2011, 09:13 PM
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An engine can under-perform because of injectors that squirt, rather than spraying, at least that's what the sales brochures tell us.

That's excellent that you own a code reader.

Keep in mind that the GEN II engine is supposed to have a valve adjustment, just not as early as the GEN 1.

Misfire (and stalling) during the warm-up cycle is a HUGE indicator of tight valves.

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Old 11-07-2011, 09:33 AM
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How is the oil?

When was it changed last? What grade? Filter?

Sounds like you may have valve timing or ignition messing up.

Valve timing is driven by oil pressure. Having clean oil of correct grade is atmost importance. Many people had their VTEC solenoids fail because they used "better" oil.
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Old 11-07-2011, 10:29 AM
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UPDATE:

Fixed!

I changed out the plugs (Bosch Platinum +4) and the stuttering went away... it drives like new now!

All 4 plugs had moderate white-ash depositing, so I think they just needed changing (the white-ash deposits are usually just lead deposits from fuel additives). They looked like they were the factory OEM plugs, so I'm not surprised that they were finished (it's an '02 with 125,000km).

Thanks for your input, guys.
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Old 11-07-2011, 01:56 PM
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Yeah, Hondas really DO NOT like Bosch plugs.

Stick with the OEM plugs...
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Old 11-07-2011, 02:19 PM
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Quote:
Originally Posted by sleeksilver View Post
Yeah, Hondas really DO NOT like Bosch plugs.

Stick with the OEM plugs...
All I've seen on the board based on my searching were comments like "Bosch sucks" and "don't use Bosch plugs" and "they're not worth the money", but nothing I've seen provides any evidence that they're bad...

And if it's a money thing, I really don't give a crap about the extra $15 I spent on the Bosches...

So what gives?
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Last edited by 416Hammy; 11-07-2011 at 02:31 PM.
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Old 11-07-2011, 04:17 PM
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Anecdotal evidence and coincidental reports.

It seems (at least to my admittedly fallible memory) that when people change spark plugs and have problems it usually comes down to one of two things...

1. Bosch plugs
2. fancy state-of-the-art plugs advertised on late night television

Okay, the last one is a bit of a joke...

The point is that the CR-V runs very well with the OEM type spark plugs, whether you use Denso or NGK versions.
Anything else seems to have problems.

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Old 11-07-2011, 04:50 PM
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Do Honda's have OBD code system that can be accessed with a reader to check to see if the vehicle ECM or PCM if equipped has any diagnostic malfunction codes?

I believe Honda refers to them as "readiness codes". Not sure if these are the same or similar.
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