Seems my car has started somewhat overheating. By somewhat I mean its getting up in the 220 range and a slight spew out the overflow when I turn it off. It was running well for a while then this....I posted a earlier thread with no responses on my fan not being 1/2 way in the shroud but has since been remedied with the below solutions. The questions I have are as follows. 1) Do you do the block test looking for exhaust gases with the engine running but cold w/ the thermostat closed? 2) should the engine overheat and spew out the radiator with the cap off? I have changed the thermostat,water flow looks good, all plugs look the same,remedied the fan/shroud situation. Had the radiator/fan off so I backflushed the radiator with the hosed taped to the lower hose fitting. Nothing in the tune dept. has changed since it ran well. No positive in the block test. ????????