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My kx 80 (1992) starts and revs up nice but wen put into gear it hardly moves, the heavyer the person trying to ride it the less it goes, when I lift the back wheel off the floor (no pressure on engine) the wheel and bike revs up and spins nice. can anyone help please ?

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Front wheel drag (locked brake).Bad tire air pressure.If not,is carburetor cloged,need to drain (bolt under) or remove to clean.If the motor revs in the gear ,the clutch slip.Could be bad clutch cable tension or need replace clutch/cable.

Posted on Oct 22, 2013


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Posted on Jan 02, 2017

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SOURCE: Hyundai accent high revving during gear change

you may have a problem with the idle sensor located near the fuel injection system.

Posted on Oct 29, 2008

  • 1 Answer

SOURCE: 97 f150 will not go into gear

Maybe Shift Cable needs readjusted.

Posted on Dec 15, 2008

Mr BrokRench
  • 1623 Answers

SOURCE: clutch pedal goes down to floor but doesnt come

This is usually caused by air thats trapped or is circulating in the system. Did you bleed the slave after you installed the master cylinder? The slave cylinder could be bad also. When bleeding the slave cylinder make sure the bleeder valve is pointing up. Sometimes this requires removal. Good luck...i hope this helps

Posted on Jun 04, 2009

  • 1865 Answers

SOURCE: oil pressure fluctuating

The sensor could be failing to read the lower pressure when the engine RPM slows down. Or the pump could be failing. I would replace the sensor and see if that doesn't correct the problem

Posted on Jul 11, 2009

  • 6982 Answers

SOURCE: oil pressure gauge reads normal when first starts.

Two things...when it reads zero, is there any engine noise (tapping or knocking)? After you rev the engine does the pressure read normal at idle and function normally, or does it go back down? Either way, you should not drive the vehicle 'till you have a mechanical gauge (yours is electro-mechanical) put on there and the actual pressure is tested. The condition may be a bad sending unit, a bad bearing or possible obstructed oil pump screen. The repair is obviously different for each one and the price is as well.

Posted on Oct 20, 2009

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