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john aka eaut
john aka eaut, The Car Guy
Category: Pontiac
Satisfied Customers: 16051
Experience:  15 years as a auto tech
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Pontiac Sunfire: Is the 2.2 ecotech engine an interference

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Is the 2.2 ecotech engine an interference engine? I think it is but want to check with you.
Hi . Thank you for asking your question on JustAnswer.
did the timing chain break? It has a chain not a belt ... non interference

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Customer: replied 5 years ago.
Yes the customer ran it very low on oil(really bad for any engine) and now his top end dosent turn when cranking bottom end I figured the tensioner uses oil pressure to make tension and the chain jumped or broke so I figured if it was an interference engine it might be a better idea to just get a engine rather than me disassembling all that and finding bent valves,damaged piston etc. Im still worried about the damage beacause of the low oil pressure though...