# Old School Back Yard Valve Leak Test

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This is an article from the TBolt USA Tech Database, the store's free online library of pit bike technical info. The text below is the article as written.

## Article

With the cylinder head off the engine:
1) Get a good size drain pan
2) Obtain Simple green or Kerosene
3)Pour Simple green or Kerosene into you exhause port
Look for leak around the valve into the combustion chamber
4)Pour Simple green or Kerosene into you intake port
Look for leak around the valve into the combustion chamber
Any solvent leaking buy and you need a valve job or you have bent valves

## Tech Database sections

- [Tech Database home](https://tboltusa.com/store/tbolt-usa-pit-bike-minimoto-technical-info-database-tech-15.md)
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- [General Motorcycle Maintenance](https://tboltusa.com/store/general-motorcycle-maintenance-tech-95.md)
- [General Motorcycle Troubleshooting](https://tboltusa.com/store/general-motorcycle-troubleshooting-tech-97.md)
- [How Things Work](https://tboltusa.com/store/how-things-work-tech-115.md)
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- [Pit Bike Installation Info](https://tboltusa.com/store/pit-bike-installation-info-tech-99.md)