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Putting Propane Engine on Gas Engine Vehicle

Hello. I'm thinking of purchasing a 1977 pick-up truck that has been equipped with a propane engine since it was purchased new. The owner installed the system and removed all smog equipment. My question is, will I need to have the vehicle inspected by a smog check referee?

Answer:

If the vehicle was previously registered in California it should have already be taken to a California Smog Check Referee and had a BAR label affixed indicating the vehicle has had a legal engine change. If this vehicle is new to California or never been registered in California (or registered in California but the DMV and BAR never notified of the engine change; which would have been illegal and the inspecting smog station and owner subject to fines), then yes, you will need to have the smog referee inspect the engine change and "BAR" it... meaning the gas to diesel conversion has been done properly and the new engine does not pollute. Subsequent smog checks may be obtained at standard smog stations. posted by SmogTips Support

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