EZGO problems after HEI Conversion – What am I missing?

Ever since I did an HEI conversion, my EZGO has been acting up. It starts fine but then just loses power after a short distance. I’m stumped and could really use some advice. Has anyone else experienced this? What worked for you?


I had a similar issue with my 1989 EZGO. After the HEI conversion, it just wouldn’t run right. I switched out the ignition module to an Autozone DR100, and it made a world of difference. It’s worth checking if the module is compatible and functioning correctly.

Solutions that Worked for Users

SolutionUsers Who Found SuccessApprox. Cost (USD)Approx. Time Needed (Minutes)
Swap Ignition Module2$30 – $6030 – 60
Check and Adjust Fuel System1$0 – $5030 – 90
Revert to Stock Ignition System1$100 – $20060 – 120


  • The golf cart starts and runs for a short distance before losing power.
  • The issue seems to be related to the ignition or fuel system.

Possible Causes

  • Faulty or incompatible ignition module after HEI conversion.
  • Issues in the fuel system leading to starvation or inconsistent fuel flow.

Solutions that Worked

1. Swap Ignition Module

  • What I Did: Replaced the BWD CBE4 module with an Autozone DR100.
  • Outcome: The cart ran smoothly without power loss.
  • Personal Experience: After the module swap, the cart’s performance improved significantly.
  • Steps:
    1. Identify the current ignition module and purchase a compatible replacement.
    2. Disconnect the power source for safety.
    3. Remove the old module and install the new one, ensuring proper connections.
    4. Test the cart for consistent performance.
  • Expert Tip: Compatibility is key with HEI modules. If one doesn’t work, trying a different brand or model can make a big difference.
  • Handy Tips:
    • Ensure the module is mounted away from heat sources to prevent overheating.
    • Use dielectric grease on the connectors to prevent corrosion.

2. Check and Adjust Fuel System

  • What I Did: Inspected and serviced the fuel system, including cleaning the carburetor and checking fuel lines.
  • Outcome: Improved fuel flow and cart performance.
  • Personal Experience: Addressing the fuel system helped, but the issue wasn’t fully resolved until the ignition module was swapped.
  • Steps:
    1. Inspect fuel lines and filters for blockages or wear.
    2. Clean the carburetor and check the float and jets.
    3. Test the fuel pump for proper pressure.
    4. Reassemble and test the cart.
  • Expert Tip: Regular maintenance of the fuel system is crucial for optimal performance, especially after modifications.
  • Handy Tips:
    • Use a fuel line cleaner additive to help clear any clogs or debris.
    • Regularly check the carburetor settings and adjust as needed for optimal performance.

3. Revert to Stock Ignition System

  • What I Did: Removed the HEI conversion components and reverted to the OEM ignition system.
  • Outcome: The cart ran without the previous issues.
  • Personal Experience: Sometimes, sticking with the stock system is more reliable than aftermarket modifications.
  • Steps:
    1. Remove the HEI conversion components.
    2. Install the OEM ignition coil and module.
    3. Ensure all connections are secure and correct.
    4. Test the cart for normal operation.
  • Expert Tip: While modifications can enhance performance, they may introduce new issues. OEM parts offer reliability and consistency.
  • Handy Tips:
    • Keep the original parts as backups when making modifications.
    • Regularly inspect and maintain the OEM components for longevity.

Golf Cart Models Where This Worked

  • 1989 EZGO Marathon 3PG
  • Various EZGO models with HEI conversions


Ernie loves documenting interesting facts about golf.

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