Common Toyota truck V6 engine problems

I have been reading about the head gasket problem and would like to know if it is particular to one side or the other. My 5vzfe with 95,000 miles, is running strong, but has a loud valve tappet at the number one cylinder. I am losing coolant from the recovery tank slowly, and cannot find any external leaks. I have a lot of condensation coming from the exhaust during warn up and strong sulfur smell. My next test would be a compression/cylinder leak down. I just replaced the plugs "Bosch twin Platinum" and oil change to Mobil 1, 5w30. Mileage is getting better, around nineteen to twenty mpg. I just replaced the timing belt and water pump, original pump was weeping. Have been looking at replacing both HG's with Felpro kit. And then adjusting valves. No oil leaks. Do you recommend valve grind, head resurfacing before assembly?

I thought about that, but was not sure if my truck would be covered under the recall? The local Toyota dealer is just up the street, I should make an appointment. Thanks.

I have never been a big fan of the dealership maintenance. I have always done all my own work, but this seems to be very involved work and time consuming. What would be a average estimate for them to complete the job? Would they do both heads? I just spoke to the dealer and they told me my VIN number was not covered by the recall. Said that I could ignore the loss of coolant and if it gets worse would basically have to pay for the repair. I have read that some customers have gotten stiffed by their dealers too!

How can I find out information on this recall? I have a 1991 pick up, V6, four wheel drive, five speed.

I see many posts for Toyota trucks with a V-6 engine with problems with losing coolant, pulsing water in the radiator, water inside the engine or unknown engine misfire.

Toyota has known for a long time they have had problems with their head gaskets. They have issued a non-published recall (VO-6)to correct the problem.