Varnish build up in the engine can cause one or more hydraulic lash adjusters to stick and cause a ticking noise in the engine. The noisy hydraulic lifter will need to be located and cleaned to stop the noise.Google+
Car Problem Reports
Honda Passport Varnish buildup in engine may cause ticking noise
Honda Passport Problem
Engine Affected: 3.2L V6
Average Mileage: 170,666 mi (115,000 mi - 215,000 mi)
Visitor, 1995 Honda Passport, 3.2L V6, 172,000 mi
ticking in engine like valve tappet ? Varnish in engine makes sense how do yuou clean it ?
i have ticking i have useing marvel mys, oil, it stops and at idle noise comes back.
Visitor, 1997 Honda Passport, 3.2L V6
I got a 1997 Honda Passport with 3.2 engine with 180K miles and it had a ticking noise in engine.
I put some engine oil additive in it, and it did not seem to make any difference.
I sold this same Honda Passport with 192K miles and it had a ticking noise in engine. It was running strong when I sold it, just got tired of shifting that 5 speed.
I still see it being driven around town a 2 years later, and I bet it has over 200k now, and bet it still has that ticking problem.
Visitor, 1995 Honda Passport, 3.2L V6, 160,000 mi
ticking in the valves.
added heavy weight oil at oil change, no real improvement in tapping noise, but engine runs strong and smooth