Pelican Parts Forums - Question on BMW 3-Series E36 O2

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- - Question on BMW 3-Series E36 O2_Sensor (http://forums.pelicanparts.com/101-projects-discussion-forum-bmw-3-series/804730-question-bmw-3-series-e36-o2_sensor.html)

I just bought a 1998 BMW 318ti that was running rough no power, backfires, etc. I replaced the belts, spark plugs gapped at .035 and than gounded to the engine block and tested. I witnessed and good spark on all 4, spray nozzles, air filter, oil & oil filter, fuel filter and radiator. Now it won't start and backfires when attempting to start. Since I've confirmed all 4 cylinders are receiving fuel, spark and air, I am assuming the problem is being caused by a bad sensor and or a bad ECM?

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This post was auto-generated based upon a question asked on our tech article page here:

If you have all items needed to start, it should. have you checked compression? It's possible engine timing is off.

- Nick

Glad to have come across this question – I followed everything on this Pelican Technical Article: BMW 3 Series (E36) Oxygen Sensor Replacement but engine won’t start! I realized engine timing is off. Oh silly me!