Bad miss

Having problems with your vehicle? Or need advice on repairing or servicing your Hilux? This is the place to ask for help
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Alan river
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Mon Jun 11, 2018 8:14 am

I have a 2004 2wd with the 3RW petrol engine. Have a bad miss it’s ok at idle not good as soon as I increase the revs. It is also pulsing through the air cleaner. Have checked vacuum hoses and replace plugs, plug leads and coil packs. Not sure what to do next

dd6
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Mon Jun 11, 2018 10:06 am

Pulsing through the air cleaner almost sounds like a timing issue?

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pietpetoors
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Mon Jun 11, 2018 10:18 am

Did the problem appear after you worked on the vehicle or did it just start by itself?
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pietpetoors
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Mon Jun 11, 2018 10:20 am

What is a 3RW engine?
Only Dead Fish Go With The Flow!
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1999 Hilux 2.7i 4x4 Raider DC. Rear diff-lock, Red Peppor Bull Bar and rock sliders, 31" Cooper ST, Snorkel, Alu-Canopy, VHF Kirisun radio, West Coast Rust, Mikem Rear Suspension, Ball Joint Spacers in front, 25watt LED Spots

Mars
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Mon Jun 11, 2018 10:39 am

Or it could be an inlet valve.

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Mud Dog
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Mon Jun 11, 2018 1:42 pm

I think he means a 3RZ motor.
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Alan river
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Mon Jun 11, 2018 2:23 pm

Yes I mean 3RZ and it just started while driving around town . Have not been working on at all

Alan river
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Mon Jun 11, 2018 2:25 pm

Have had compression test done and was told it is all good

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Mud Dog
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Mon Jun 11, 2018 6:29 pm

If the compression test was genuinely good, then the chances of a valve problem are slim. Generally these are hardy motors that can take some abuse and don't give many problems.

Without the blow-back and considering what you have already replaced (including the compression test), I would perhaps be thinking along the lines of a dirty / partially blocked injector.

The fact that you are getting some bl;ow-back through the intake is puzzling and as mentioned could be a timing issue, but it would have to be badly out of spec. Then why would the timing go out of it's own. I'm not convinced even though it is a possibility.
When your road comes to an end ...... you need a HILUX!.

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Life is like a jar of Jalapeño peppers ... what you do today, might burn your ass tomorrow.
Don't take life too seriously ..... no-one gets out alive.
It's not about waiting for storms to pass. It's about learning to dance in the rain.
And be yourself ..... everyone else is taken!

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LouisZ
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Wed Jun 13, 2018 9:49 pm

Check the idle control valve on the throttle body. It become stuck and needs a good cleaning.

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