Where is the belt tensiner for the regulator on 97 geo prizm

its corolla
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Head gasket needs replaced

Give me some more information about this problem. May be i can help.

The fuel pressure regulator. its on the end of the fuel rail. pull the vacuum hose off the regulator and look inside. If the inside of the hose is wet with fuel, the regulator is bad.

remove the screws from the front and rear door jambs(2 or 3) pull on the plastic cover,it should pop out. Only held in place by plastic prongs

All the adjustments are made at the alternator.You need to loosen the top and bottom bolt and if has an adjuster behind the alternators top bolt then that needs to be backed off as well.Slide the alternator towards the block{may need to loosen the alternator bracket bolt at the head].Remove the belt and put on the new one .Adjust the belt until ther is about a 1/2" of play in it and test run,if it squeals after start up tighten it some more until the sqealing stops.

it normally is up behind the glove box or under the hood you can try autozone.com to see if they have your car listed for diagrams pictures and step by step instructions if your car is not listed then try your local library they have all the car manuals and even copy them for you

http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c15280047c0b

Most likely the belt and pulleys are shiny if you look at them, replace the belt, while you have the belt off try and clean the glaze off the pulley groves, this will make the new belt "grip" better and avoid slipage.