Hey forum, i just did an engine swap on my 97 Tj, no upgrade, just went from a 2.5 to another 2.5. The engine started on the first attempt, but it died during the first test run. We had some white smoke coming from the muffler & there was some over heating. We figured the overheating was from not having enough coolant, i just would like to know if there is anything else that could have caused the white smoke & the engine to cut off
White smoke is related to coolant burned in the engines combustion chamber. Where did you get the engine from? It could possibly have a bad head gasket or cracked head. If it's a new engine I would contact the manufacturer you got it from ASAP. If you had burped the cooling system and made sure it was full before the test ride, this would explain why it was low on coolant and overheating.
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The first engine needed more repairs than i could handle, shot lifters, bad cam shaft, blown head gasket, i got the new engine from a fellow jeeper who was steppin up to a V8, no problems prior to pulling the engine