Difference between revisions of "Fuel System Troubleshooting"
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m (Robot: Automated text replacement (-air cleaner +air cleaner)) |
m (Robot: Automated text replacement (-piston rings +piston rings)) |
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| Line 59: | Line 59: | ||
==Incorrect fast idle speed== | ==Incorrect fast idle speed== | ||
* Choke stuck open | * Choke stuck open | ||
* Worn piston rings | * Worn [[piston rings]] | ||
[[Category:Troubleshooting]] | [[Category:Troubleshooting]] | ||
Latest revision as of 03:58, 24 November 2010
Engine cranks but won't start[edit | edit source]
- No fuel to carburetor
- Engine flooded with fuel
- No spark at plug (ignition system faulty)
- Clogged air cleaner
- Intake air leak
- Improper choke operation
- Improper throttle operation
Engine idles roughly, runs poorly or stalls[edit | edit source]
- Improper choke operation
- Ignition malfunction
- Fuel contaminated
- Intake air leak
- Incorrect idle speed
- Incorrect pilot screw adjustment
- Low cylinder compression
- Choke stuck open
- Rich mixture
- Lean mixture
- Clogged carburetor
Misfiring during acceleration[edit | edit source]
- Ignition system faulty
- Lean mixture
Afterburn during acceleration[edit | edit source]
- Ignition system faulty
- Lean mixture
Poor performance (driveability) and poor fuel economy[edit | edit source]
- Fuel system clogged
- Ignition system faulty
- Air cleaner clogged
Afterfiring[edit | edit source]
- Ignition system malfunction
- Carburetor malfunction
- Lean mixture
- Rich mixture
Lean mixture[edit | edit source]
- Clogged fuel jets
- Faulty float valve
- Float level too low
- Blocked fuel fill cap air vent hole
- Clogged fuel strainer screen
- Restricted fuel line
- Clogged air vent tube
- Intake air leak
Rich mixture[edit | edit source]
- Clogged air cleaner
- Worn jet or needle jet
- Faulty float valve
- Float level too high
- Choke stuck open
Incorrect fast idle speed[edit | edit source]
- Choke stuck open
- Worn piston rings