2007 Hyundai Sonata Q&A
2007 Hyundai Sonata Question: Does timing chain tensioner affect oil pump?
My son's 2007 Hyundai Sonata had an engine noise that was eventually diagnosed as bad timing chain tensioners. However, one Hyundai dealer repeatedly denied the problem, so it was 8 months before another Hyundai dealer admitted it and changed the tensioners. A couple of months later, the engine light and oil light were on and he was told he needed a new oil pump. By this time, the warranty had expired and he had to pay for the new oil pump and eventually a new engine. My question is this: Could the failure of the oil pump have had anything to do with the timing chain tensioner problem? - Deb9158
Maybe if the tensioner teflon plates that the chain rides on came apart and some of the debris got into the oil pump pickup. Hopefully no sealer got into the oil pump pickup when the timing chain work was done. - raiderron
I think Ron is spot on. I think debris probably got into the oil pump pick up during the repairs. This is common when care is not used to clean the mating surfaces of used sealant. Just a dealer point of view - Hyundai is pretty militant about NOT replacing timing components for the noise. They consider it nearly always to be normal operation - especially on the newer engines. So I'm not surprised that the first dealer didn't "help" you... Hyundai will literally not pay warranty claims for timing tensioners if the local rep for parts and service is not aware of it in advance. - DaveJHM