Scion tC engine tapping or knocking noise

55k Miles on this 2008 Scion tC. Regular oil change intervals and never let the oil go low. Never had any issues before but on this last interval I noticed this unnerving tapping or knocking noise which seems to be coming from the upper end of the engine.

Category:

Autos & Vehicles

Tags:

• scion
• tc
• toyota
• 2008
• 2az-fe
• engine
• knocking
• tapping
• valves
• cars

[martinez2312]

Hey, so did you fix or find out what was causing that knocking noise am having the same problem on my scion tc....

[XaixFireye]

@martinez2312 Ah sorry, nah. I am determined it could be rod knock although I have other issues at the moment. One of my cylinders has oil blowing back (piston seals are probably gone) I go through roughly half-a quart every full tank ~360mi but my MPG's are still 29-30 on HWY

[gtst23]

Hey, any luck trying to figure out what is causing this noise? I have the same issue on my 2007 with 57K miles. I dont know if its normal or not

[XaixFireye]

@gtst23 Nope, some other guy has a similar video here on youtube and has a thread posted on ClubSciontC about it. Based on what I have gathered it could be adjustment is needed for the valves.

[MichaaaeelGrainge]

Hey dude, I've had this same problem and... well after blowing my engine and having it rebuilt... we found out that noise is from a thrown rod! I know its annoying and it sucks but the way Scion tC's are built the engine is upside down and if you go to a toyota dealership, just to have them look at it and to take the engine out it's $5000... I went to Thunderbolt in Houston Texas, to rebuild my motor cost me $2000 with a lifetime warranty! Good Luck!

[pumpnjas]

or it could be the drive belt tensioner

[pumpnjas]

get the fuel injectors checked

[sambolia2424]

I have an 07 just hit 60k and I just started hearing that

[fusionross]

found out anything?

[Eremenatar]

its been a while since you uploaded a vid