I have been doing transmission work for about five years and in that time the only way I have ever stoped a rear main seal leak is to remove the transmission andflywheel. There are no bolts to tighten.
These figures are for the 1.7DT and 1.7DTL engine,ensure from owners handbook yours is one of these.Requests like this need full engine type and year to be sure of good information.Post again if this data not relavent. You will need an angle gauge for four of the five stages of tightening. Also,head gasket is coded for thickness with one to three small holes to allow for piston protrusion,obtain same as you have. Torque (new bolts)to 39Nm + 60 degrees + 13deg + 60deg + 13deg.Work outwards from centre pair in a "racetrack" pattern. Two centre,two right,two left,two far right,two far left.
On a 3.8L engine, the EGR valve is at the back of the engine on the right side, near the top of the engine. It is held on to the engine by two small bolts. Attached on the side of the EGR valve is a metal pipe held on to the EGR by two small bolts. If you remove the EGR, be careful not to drop any of the bolts down in the engine as you will never find them. Experience talking here. Fairly easy to replace but make sure you get the right one for your sized engine. I got mine at NAPA for about $70.
Follow the top radiator hose from the radiator to the engine. The housing it is clamped to has a small bell with 2 bolts where it is bolted to the engine. Remove the hose clamp and the 2 bolts. You will find it inside that part.
it depends on how much you overtightened them but since theyre pretty small, your probably alright. if its leaking its liable to be your gasket. try using a real thin coat of rtv on each side of the gasket and dont overtighten the bolts.
There are a lot of bolts on the engine and we don't know what bolts your talking about, there are different torque specs all over the engine, I would say that you should go to the library and get a chiltons repair manual for your car and it will tell you the specs your looking for.
At the bottom of the radiator there is a radiator hose that goes up to the engine. The hose runs into a housing with two bolts. Remove the two small bolts and the thermostat is inside.
Remove oil filter and oil body pump as well as the gear. Note how they are removed to fix back without any hitches. Clean adjoining cables with water to prevent corrosion. Install brand new pump, tightening small bolts to 89 in-Ib and big bolts to 18 in-Ib. Reinstall everything else and check engine oil level before starting the car.
Front middle of engine. Easier to do by removing the cover held by four bolts on top of engine. There is a opening in front but to small to work with.
It is on the passenger side of the engine compartment. You can see it through the little cover plate (held on by a couple of small bolts) mounted on inside fender well. The starter is held on by two bolts.
It is located in t he rear of the engine...close to the fire wall directly in the center. A little tricky to reach...small hands will help. Bolts on with 2 bolts.
Follow bottom radiator hose from radiator toward the engine. You will reach a small neck attached to the engine by two bolts. Remove the hose, then the neck, and you will see the thermostat.
behind a small cover on the bottom right side of the engine, look for three Allen key bolts, and you found it