Question about Toyota Cars & Trucks
Cylinder head bent, skimmed, replaced cylinder head gasket and spark plugs
Check your timing belt. Also your rods. If the timing belt slipped, you could have thrown a rod which may be why the cylinder head was bent.
Posted on Nov 25, 2014
If you are pretty sure the timing is right Check for vacuum leaks
Posted on Nov 25, 2014
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Posted on Jan 02, 2017
SOURCE: 2004 Toyota Tundra spark plug
The causes for spark plugs leaving the cylinder head are as follows:
1. The threads in the cylinder head were compromised, as in cross-threading.
2. The spark plug, when replaced, was not tightened down properly (like only 2-3 threads in)
3. A combination of the above.
Whe the plugs are fully seated in the cyl heads, and are at the proper torque, it would be extremely RARE for the plug to be jettisoned by the compression of the pistons. You only have roughly 175-185 PSI compression, this will NOT defeat the retention of the threads. Look at the hole in the head...How may threads are damaged? If it is just the end of the hole, the plugs was not in "all of the way". If ALL of the threads are bad, the plug was inserted improperly, and damaged the threads in the head. Rethreading (a "heli-coil") will correct you condition, if properly done.
Hope this helps.
Posted on Oct 01, 2008
may be oil feed to cylinder head replace gasket
Posted on Apr 20, 2009
First, go in corner and cry. Second, grab a good strong drink. okay ready to start....Cylinder head SHOULD come off. The reason behind this is that when you re-thread the hole, the fillings from the tap will go into you combustion chamber (BAD). Best place to go to get the tool would be your local auto parts store. they may have kits there that you can buy. If you don't want to take the head off. could try and sticking a vaccum beside it and hope that it gets most of the stuff
hope that helps, good luck
Posted on Jul 08, 2009
Sound like an air / vacuum leak to me.
Re-check for an air leak on #2 cylinder inlet manifold.
Use a propane torch (unlit, of course) to flood propane gas around inlet manifold/head flange & gasket area.
If there is any change in idle speed during this test you have a vacuum leak.
Posted on Aug 18, 2009
This is because of imprper timing, ask the service man to open the head and fix the timing of crank and cam proprly, there could be no other reason for that, hope this will solve the problem
Posted on Sep 20, 2009
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