Question about Toyota 4Runner
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Posted on Jan 02, 2017
SOURCE: timing engine
I had a 2.4 L engine in a caravan and replace the water pump that was controlled by the timing belt.
I was having the same problem, I called my bother in law to help. The crank shaft has to stay perfectly timing on the low end. The cam shaft marks are set exactly one half of a tooth apart. So when looking at it, The left side cam gear mark is a half a tooth higher then the right side. Then you have to try and slip on the belt . That is the easy part. When letting go of the timing belt tensioner the marks should line up perfectly across from each other. You have to take off the belt again and make sure you keep correct tension on the crank shaft so the mark is not moving when you are putting on the belt. There is a web site call Alldata.com. The web site cost a few dollars but it willl give you a detail instructions on how to time the engine with pictures to guide you. This is the same web site the pro's use.
I hope this has been helpful.
Oh, by the way you are lucky because the engine is not an interferrence type , so you can not damage the valves at least. Since you know the oil pump is out of time , check all the spark plugs again , they are probably oil soaked .
Posted on May 01, 2009
SOURCE: Rocker arm failure
Did the timing belt break at one time? Aside from the obvious of it sounding like your son did what mine did and tried to race the vehicle beyond it's abilities if the timing belt broken at one time it may have damaged the valves. If the valve impacts the cyclinder it is possible that it can damage the rocker and cam. When you pull the head off this time have the head re-worked and valves replaced. This should solve the problem.
Posted on Sep 12, 2009
You must find the cam lock bar and crank lock pin to do this job properly, otherwise you can bend some valves and that becomes expensive..the front crank damper has a mark to line up with a mark on the timing cover for #1 TDC, but the cam lock bar is what aligns the cams into position. The crank lock pin is helpful but not 100% necessary...
Posted on Sep 16, 2009
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