BENT VALVES in the head: tell me how that happens.... - Toyota Yaris Forums

BLAZINBLUEVITZ · 02-16-2009, 12:36 PM

got an 08 tc which was in before and had motor/head replaced under warranty for a ticking noise in the valvetrain. customer is back 3 months and 15,000 miles later and now ALL of the valves in the head are bent?

Tamago · 02-16-2009, 01:09 PM

Quote:

Originally Posted by BLAZINBLUEVITZ

got an 08 tc which was in before and had motor/head replaced under warranty for a ticking noise in the valvetrain. customer is back 3 months and 15,000 miles later and now ALL of the valves in the head are bent?

what weight of oil is he running?

wait.. you're coming to YARISWORLD for tech support?

Altitude · 02-16-2009, 02:04 PM

Quote:

Originally Posted by Tamago

wait.. you're coming to YARISWORLD for tech support?

...and that's a problem because?

rob323 · 02-16-2009, 04:39 PM

Does the timing chain still have tension?

Tamago · 02-16-2009, 04:45 PM

Quote:

Originally Posted by rob323

Does the timing chain still have tension?

iirc the newer chain tensioners are oil pressure activated and ratcheting... so they'd take up any slack.. so yeah, you may want to check that the teeth on the tensioner are not worn off.. but i still sniff a mis-shift.

Tamago · 02-16-2009, 04:50 PM

Quote:

Originally Posted by Altitude

...and that's a problem because?

not as much a problem as a slight source of amusement to me.. because most of the 'knowledge' on this forum orbits around what offset wheel you can run without rubbing and what weight of oil you can/cannot run...

so a question about bent valves being asked here where the OLDEST yaris on the forum (US, anyway) is approaching 3yrs old.

BLAZINBLUEVITZ · 02-16-2009, 06:52 PM

Quote:

Originally Posted by Tamago

not as much a problem as a slight source of amusement to me.. because most of the 'knowledge' on this forum orbits around what offset wheel you can run without rubbing and what weight of oil you can/cannot run...
.

probably because any talk of STREET RACING or ripping around the twisties with a new part installed is off limits....

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02-16-2009, 12:36 PM	#1
BLAZINBLUEVITZ View User's Garage Drives: 2007 YARIS 3DOOR Join Date: Jan 2009 Location: NEW YORK Posts: 1,275	got an 08 tc which was in before and had motor/head replaced under warranty for a ticking noise in the valvetrain. customer is back 3 months and 15,000 miles later and now ALL of the valves in the head are bent?

02-16-2009, 04:39 PM	#4
rob323 Don't drive it, RALLY it! Drives: 1999 echo PRC rally car Join Date: Oct 2008 Location: Joyner, Brisbane Posts: 321	Does the timing chain still have tension?