Ticking Type Noise from Engine Valve Train on Isuzu Trooper

A ticking noise may be noted from the engine valve train area. This is commonly caused by varnish build up in the hydraulic lash adjusters (HLA). Our technicians tell us that using Mobil 1 synthetic oil has been successful in cleaning the varnish deposits and quieting the lifter noise.

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Average mileage: 172,327 (100,000–275,000)
Engines affected: 3.2L V6, 3.5L V6
8 model years affected: 1992, 1993, 1994, 1995, more1996, 1997, 1999, 2002
17 people reported this problem
10 people shared problem details
The ticking was minor and only upon the first few minutes of starting the vehicle. Now it is constant and louder. I just changed the oil and put a new filter in as well as synthetic high mileage oil. I noticed the oil pressure stays really low unless I am accelerating and then upon idle it goes very low again. However, no warning lights have appeared on the dash. I am still paying for this vehicle from the prior owner. How costly would it be to have this repaired? Does it HAVE to be repaired to prevent permanent damage? Any help is very much appreciated as this is my ONLY vehicle at the moment. I am a mother of two and work full time so I am very worried.
1997 Isuzu Trooper- 3.2L V6147,000
I have had a ticking noise in the left bank of the motor (passenger side) and thus far I have run a 5 min motor flush through it and changed the filter and drained it, then put 3 qts of oil, 1 qt of transmission fluid (because of the high detergents and low viscosity it can be a good cleaner), and a qt of extra detergents in the engine, ran it for a 100 or so miles, then drained it again and put 4 qts of Pennzoil 20W-50 oil and 1 1/2 qts of Lucas Oil Stabilizer (the really thick stuff). So far this has still not solved the ticking but I still have around 80 Psi oil pressure so I don't know what to do next. This problem remains unresolved.
1992 Isuzu Trooper- 3.2L V6150,000
My trooper doesn't always have a tapping noise, but when it does it is generally after it has been running awhile. My oil pressure also runs low when idling. Not sure if this is an issue or not, as my 1995 z71 does the same thing.
1995 Isuzu Trooper- 3.2L V6100,000
Ticking while driving. Changing oil and using thicker oil does not help. Used additives, does not help.
1994 Isuzu Trooper- 3.2L V6185,000
Ticking noise gone after semi synthetic oil and purolator oil filter and 150 miles.
1994 Isuzu Trooper- 3.2L V6145,000
I have the same issue. The only thing that quiets this ticking noise for my Trooper was the high mileage motor oil. It works for about 1500 miles and then the ticking starts again.
1999 Isuzu Trooper- 3.5L V6107,600
Valve ticking sound on passenger side only. Just bought. Not resolved yet but will start conservatively with the suggested synthetic oil
1996 Isuzu Trooper- 3.2L V6177,000
same basic "ticking" noise. my mechanic recommended and began using a treatment called BG at every oil change in addition to synthetic oil and it has greatly helped!
2002 Isuzu Trooper- 3.5L V6212,000
Problem valve tap no solution yet still trying.
1994 Isuzu Trooper- 3.2L V6275,000
have not found a solution
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