The ABCs of Carburetion

UM-900 (1959)

 

Page 14 of 19

TROUBLE SHOOTING TIPS
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It must be remembered that carburetion depends on the rest of the engine, such as ignition, compression, timing, etc. If, after everything else has been checked, trouble remains which might be the carburetor, check the following points:
GENERAL CHECK POINTS
1.  Is the engine manifold heat valve free? (rough hot idle, stalling)
2.  Are there any vacuum leaks in the manifold or carburetor? (rough idle, hard starting)
3.  Do gaskets indicate a good seal? (air or fuel leaks)
4.  Are all screws and mounting nuts tightened evenly? (distortion, leaks)
5. Are shaft holes excessively worn? (poor operation, leaks, sticking)
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