Overhauling is not going to be cheap. It means taking the engine out, disassembling the unit and replace whatever components inside that is bad and/or machining of parts to get them back to specs.
The cheapest option is to just replace the valve seals and it can be done without disassembling the engine. It would still cost a few hundred $.
I would suggest getting a second opinion. The mechanic does not seem to know much about Hondas. Additives are not going to help reduce smoke, and I believe that is what he recommended.
The gauges that you mentioned, I believe they are after market add-ons
Temperature indicating 100 is an indication of overheating.
Was the coolant level very low? Do you need to keep topping up?
The vacumn indiactor showing 0 could mean a leakage in the vacumn hose or the engine is not running correctly. At idling, the vacumn should be negative but if the engine rpm is high, it could be nearer to 0, but still won't be 0 unless the throttle is opened abruptly.
Volts is for indicating the alternator charging and should show between 13.5 to 14.5 when engine is running.
With engine off it would show the battery voltage with ignition switch turned on.
Wednesday, August 4th, 2010 AT 12:01 PM