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My son has a DT125r toniight it just started revving its knackers off and wouldnt turn off and started smoking but before that when he got to work there was a bit of smoke by the plug any ideas?

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Do a compression test possible head gasket

Posted on Nov 20, 2014

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Get a Haynes repair manual for it,may be a problem with a recall too

Posted on Nov 20, 2014

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1 Answer

Trouble starting when hot and loss of power???


Ask a local mechanic here ,as they very rarely give problems ,now is this the three cylinder engine or the 4 as their is a difference as to trying to you some idea as the problem and stop revving the engine up as you WILL KNACKER IT UP

Nov 27, 2013 | Cars & Trucks

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Throttle position sensor


run fault codes to check which sensor is at fault.

Oct 08, 2013 | Cars & Trucks

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Revving engine


This is normally caused by a cracked head or failed injector seating washer allowing fuel into the sump. The oily fuel then keeps the engine running. Does the engine oil smell of diesel?

Sep 07, 2013 | Land Rover Discovery Cars & Trucks

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Why is it that over revving results in more black smokes? Is it a good standard for smoke test to over rev? I own a 1 year and 5 months Mitsubishi Montero Sport with 13,000 kilometer mileage. Also, a Mazda...


The Effects of Over Revving a motor can be Catastrophic. I do not understand why the government would require someone to do such a test. Normal Emissions Testing is done at High (2100 - 2500) and the Idle (500-900).

Reason for Increased Smoke.... As you increase the internal pressure of the vehicle, you are creating a VACUUM and this is suckking the Oil past the rings, and anywhere else that it is causing the Vacuum.

Efffects of Over Revving van be Premature Failure of the engine (Could cost you $5-$8,000 to replace)... I would ask WHY so high... A Diesel would MAX OUT their RPM @ 4,000.

These people who are doing the test, ask them to show you where it says in WRITING 4,000... That is much higher than in the 4 states I have been certified to be an I/M Inspector

Apr 05, 2013 | 1998 Mitsubishi Montero Sport

2 Answers

Vrg galant smoking on start up and loses power when revving in idle.


SMOKING BLUE YOU HAVE LOW COMPRESSION ENGINE BURNING OIL.YOU HAVE WORN VALVE GUIDES ALSO VALVE SEALS AND WORN PISTON RINGS.

Jan 16, 2011 | 2000 Mitsubishi Galant

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