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Toymods » Tech & Conversions » 18R-C problems - any ideas

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river
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June 2004
Re: 18R-C problems - any ideas Sat, 09 April 2005 06:53 Go to previous messageGo to previous message
Hi,

Have you checked your plugs? What state are they in?

If the cylinders have carbon deposits in them, they can cause the engine to run on a bit after you've turned it off. This is because the carbon deposits are glowing from the engine being used and they are hot enough to ignite the mixture (without the sparkplug) when you turn off the motor.

If you start the engine and let if run for only a very short time (ie not up to temp) and turn it off, does it still run on? Or does it run-on only after it's been running for a while and the engine is hot? Usually, if you have some carbon deposits they run-on after the engine is hot. The best and cheapest way to get rid of the carbon deposits is to give the car a good run and let the engine rev pretty high to "burn and blow" the carbon out of the cylinder.

I'm not sure about the 18R-C, but the 18R-G has a air-bypass (or something like that) solenoid that does something when you turn off the engine. It allows extra air into the carbs or something like that to stop the engine running on. I'm sorry I can't be more specific than this. It once broke on my car and the engine would run on a bit until the solenoid was replaced. I should really do some investigation to find out exactly what it does and how. In any event, if the 18R-C has something like this, then maybe it needs to be checked also.

Also, I'd check your compression in case you've got a sticking inlet valve. The only way something is gonna blow out of your carby is if the inlet valve is open when there's an ignition occuring in the cylinder.

seeyuzz
river
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SubjectPosterDate
Read Message   18R-C problems - any ideas LachieSat, 09 April 2005 05:08
Read Message   Re: 18R-C problems - any ideas 81LOWLUXSat, 09 April 2005 06:22
Read Message   Re: 18R-C problems - any ideas  riverSat, 09 April 2005 06:53
Read Message   Re: 18R-C problems - any ideas earlyrollaSat, 09 April 2005 13:59
Read Message   Re: 18R-C problems - any ideas Maurice cSun, 10 April 2005 01:46
Read Message   Re: 18R-C problems - any ideas LachieSun, 10 April 2005 23:15
Read Message   Re: 18R-C problems - any ideas Maurice cMon, 11 April 2005 03:29
Read Message   Re: 18R-C problems - any ideas earlyrollaMon, 11 April 2005 11:04
Read Message   Re: 18R-C problems - any ideas Maurice cMon, 11 April 2005 23:59
Read Message   Re: 18R-C problems - any ideas LachieTue, 12 April 2005 03:10
Read Message   Re: 18R-C problems - any ideas barned01Tue, 12 April 2005 04:10
Read Message   Re: 18R-C problems - any ideas LachieTue, 12 April 2005 04:51
Read Message   Re: 18R-C problems - any ideas Maurice cSat, 16 April 2005 06:17
Read Message   Re: 18R-C problems - any ideas barned01Sat, 16 April 2005 07:22
Read Message   Re: 18R-C problems - any ideas Maurice cWed, 20 April 2005 00:38
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