Question about 1986 Toyota Pickup 4WD
Chiped exhaust valve, was not in cylinder could not find it. Replaced valve, truck run hot. Changed head still runs hot.Checked thermostat, water pump, radiator, water flow, and exhaust out of tail pipe felt good. Where did it go.
You either have had the wrong valve seals installed, they are physically missing, or the valves are incorrect (too loose in the guides/stem too thin). The rocker arm seals will not contribute to your issue. If it did not have the oil smoke before you took the head off, the issue is with whatever the machine shop did. Valve seals have to fit TIGHT, or oil will go down the valve stem into the intake.
Take the head back to the machine shop & tell them to fix it. For free.
Posted on Sep 27, 2008
sorry i still think its a gasket problem,or water ports---but without bringing it to yard for me to have a look its a bit difficult and iam in spain.These *** motors use a smaller rad cap with two seals in ,so it can draw the coolant back in on cooling,but iam of the opinion that its drawing in a slight water ingression causing the idle problem.Go on give it a birthday and pull the head off and check its level and not warped ,also the water ports are not dissolved to any extent.
Posted on Jan 03, 2009
It seems there is some kind of air entering the carburator where its not required to do so or the idling soleniod switch is malfunctioning, thus not allowing the air to enter for the engine to idle .
Also recheck the vaccum pipes if they are correctly refitted per the schematics under the hood.More over remove the idling switch and blow some air to the hole probabley theres some kind of obstruction over there .
Posted on May 06, 2009
Removing the starter
Posted on Aug 01, 2009
Firstly, ensure you have the required 'mixture' of coolant/water (must have required coolant).
Second, I would recommend you re-test all the cooling system sensors again (make sure they're within specifications), in case a new one is faulty.
Third, ensure the new thermostat was of the correct temp setting (they all differ), so that it opens at the required time. Most cooling systems operate within 90 - 100degC.
Fourth, make sure the radiator (and associated hoses) aren't blocked.
If your temp gauge is reading higher than normal, but NOT in the danger zone...then this can be considered normal (especially if you've replaced with new components) and nothing to be concerned about.
However, if the temp gauge IS in the danger zone....then this suggests the coolant is not flowing through the cooling system properly.
If all above components test ok, then it's possible your water pump may not be pumping enough volume.
Posted on Aug 16, 2009
Testimonial: "I appreciate your help...Maybe I should just relace the water pump, that would be the last thing that I would need to replace."
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