Notices
Scion xA/xB 1st-Gen Drivetrain & Power Engine and transmission discussions...

Over Heating and then some.......

Thread Tools
 
Search this Thread
 
Old 05-30-2008 | 11:55 PM
  #81  
Jan06xB's Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
 
Joined: Feb 2006
Posts: 1,971
From: Tiverton, RI
Default

Does it tick when it is cold as much as when it is hot? Did you check the belts and make sure nothing is wrong there?
The VVTi timing may be pretty tricky to check and the only way I think you can tell easily is maybe with a vacuum gauge since it should be pretty weird vacuum or a strobe light into the oil filler hole if you can see both the intake and exhaust cam lobes and see them moving with respect to each other as you vary the load and rpm of the engine. As the VVTi adjusts the intake cam timing it should vary in position to the exhaust which should not change but keep in mind that the timing for the strobe light would vary if you are triggering on a spark plug - if you could trigger on TDC of the crank then you would be all set.

Another thing to check it the spark plugs if they are all even colors then it is not a intake valve leaking any oil through the stem seals.

Bore Scope the cylinder walls and check for maybe cracked rings scoring the bores.
Old 05-31-2008 | 01:06 PM
  #82  
itsme's Avatar
Thread Starter
Senior Member
10 Year Member
5 Year Member
SL Member
 
Joined: Mar 2005
Posts: 982
From: Forest Park
Default

Originally Posted by Jan06xB
Does it tick when it is cold as much as when it is hot? Did you check the belts and make sure nothing is wrong there?
The VVTi timing may be pretty tricky to check and the only way I think you can tell easily is maybe with a vacuum gauge since it should be pretty weird vacuum or a strobe light into the oil filler hole if you can see both the intake and exhaust cam lobes and see them moving with respect to each other as you vary the load and rpm of the engine. As the VVTi adjusts the intake cam timing it should vary in position to the exhaust which should not change but keep in mind that the timing for the strobe light would vary if you are triggering on a spark plug - if you could trigger on TDC of the crank then you would be all set.

Another thing to check it the spark plugs if they are all even colors then it is not a intake valve leaking any oil through the stem seals.

Bore Scope the cylinder walls and check for maybe cracked rings scoring the bores.
damn it what a headache.....my spark plugs are fine checked them while doing the compression check, belts are in good order hence i onlee have one belt any ways but yea its ticking as much as it does when its hot.....i really do think it is my vvti cam though........
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
SloTC1
PPC: Engine / Drivetrain
14
08-16-2018 02:45 PM
myegg
Scion tC 2G Owners Lounge
3
09-01-2015 08:12 PM
Marialzga
Scion tC 2G Drivetrain & Power
8
07-31-2015 05:38 PM
Subaru86
Scion FR-S Suspension & Handling
0
07-31-2015 04:00 AM
StxArOne
Introduction Forum
3
07-13-2015 06:25 PM



Quick Reply: Over Heating and then some.......



All times are GMT. The time now is 10:34 AM.