Question about 1995 Toyota 4Runner
I know the head gasket is no good. But will that stop a car from starting. I tried to start it but it wants to fire but doesnt. It smelss like its flooded. I let it sit for a day then tried again to start but it won't
The toyota previa uses a formed silicone gasket for the valve cover and the cover is held in place by metric shoulder bolts ( 10mm). The valve gasket leaks because you can't get enough preload on the bolts to re-seat the old gasket when it gets old and shrinks. The shoulder bolts only allow you to tighten the gasket enough to seat the shoulder on the bolt. If you continue to torque down the suspected bolts, you will snap the bolt off ( don't ask me how I know this ). You can either 1.)replace the old gasket with a new one or 2.) remove the existing bolts around the leak area and put in new metric bolts that do not have a shoulder. You may want to put in a small sleeve into the existing bolt hole but shorter than the thickness of the valve cover to account for the smaller diameter bolt. You can now torque down the bolt and get enough preload to seal the valve cover without removing the old gasket. Make sure you use a torque wrench ( in-lbs) or be very careful not to snap these small valve cover bolts.
Posted on Jul 15, 2009
The head gasket replacement wasn't done right if you still have overheating; this indicates that exhaust fumes are still entering the water jacket.
Not using a thermostat will have a definite negative impact on power and fuel consumption.
On your heater: check for vacuum hoses not reconnected while this great headgasket job was being done.
There are dampers in the climate system that open and close to send the conditioned air to where you want it and these are controlled by vacuum from the intake of engine.
Posted on Oct 25, 2009
There is a heater core bypass pipe that runs from the block (under the manifold) to the bacl of theengine where you will see a flat rectangular "sheet metal" thing with a pipe coming out of it. The a rubber hose connects. You need to pull the top air plenums and intake to get to it. The p[ipe flange bolts to the block with silicone rtv as a sealant.
Posted on Nov 27, 2009
check to make sure that the wiper is not stuck in the window seal. Pull it out if it is and then try. The window will not roll down if the wiper is in that position.
Posted on Jan 05, 2010
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