Hey everyone. I hope I posted in the correct forum.
I just bought a 1991 STS and I'm doing a major tune up which includes changing the spark plugs, the park plug wires, the fuel filter, the air filter, the air cleaner mounting gasket, coolant flush, power steering flush, brake fluid flush and hoses, the EGR valve and gasket, cleaning out the throttle body bores, serpentine belt, the cap, the rotor, the oxygen sensors, the pcv valve, the engine oil, the engine oil pan gasket and filter, the tranny oil, the tranny gasket and filter, the tranny auxiliary hoses, the engine oil auxiliary hoses, checking and adjust the timing if necessary.
Every thing has been done but the spark plugs, the fuel filter, power steering flush, the EGR valve and gasket, cleaning out the throttle body bores, the cap, the rotor, checking and adjust the timing if necessary.
My question are how do I get to spark plugs 2 and 4. They are located on the upper left side of the engine and are hard to get to because there is some hoese in the way. How do I get around it?
How do I remove the 2 EGR valve bolts. Do I have to remove the fuel rail to get to them? I consulted the 1991 Eldo/Sev service manual and it doesn't say that I have to remove anything to remove the EGR valve, but I can't remove them with the regular wrench that I have. Do I need some type of special wrench to reach the bolts?
Do I have to disconnect the battery to replace the cap and rotor? Also, are there special instructions for them?
How do I clean out the throttle body bores or whatever? Do I remove the throttle body from the engine before cleaning the bores?
I haven't gotten around to the power steering flush, the fuel filter, and checking and adjusting the timing and I would like to know if there are any special instructions for them as well? For the timing, I just bought a Craftsman inductive timing light from Sears. Is it any good?
I previously owned a 1996 Concours and boy did the Northstar engine give me hell. I had to spend thousands of dollars on it at the good old dealership just for some of what I did with the 4.9. Boy am I happy to own a 4.9. It is so easy to do stuff yourself as long as you have the right tools.
Thanks for your help in advance.