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.Google+
Car Problem Reports
Isuzu Rodeo Valve Train Noise Due to Varnish Build up
Isuzu Rodeo Problem
Engine Affected: 3.2L V6
Average Mileage: 121,500 mi (75,000 mi - 180,000 mi)
Visitor, 1997 Isuzu Rodeo, 3.2L V6, 75,000 mi
Always used 0W-30 Mobile 1. Ticking noise starter occasionally and by 100, 000 miles was getting to be annoying. Noticed oil pressure droops at slower rpm and seemed to coincide with ticking. Changed to 15W-40 full synthetic and this improved oil pressure and ticking noise.
Visitor, 1995 Isuzu Rodeo, 3.2L V6, 114,000 mi
tapping noise have tried oil treatment no sucess
cold start has loudest chatter...after short warm up chatter goes away at approx 2000 rpm ..oil pressure at gauge warmed up 5-10 at idle up to 30-40 over 2000rpm cold atart pressure goes up to 50-55 ps ... from idle to under 2000 grand chatter can always be heard ..ive done many trys for repair ..from 5=6 oil changes ,flushes from once 50 wt to isuzu recommended 0 wt sytentic with little to no noticable diff...
tried risolone other fixes to no avail ...am i still dealing with lifter feed hole issues ..cant see how ..or possible weak oil pump volume ?? any ideas appreciated ..thank you
Visitor, 1994 Isuzu Rodeo
i,m not sure, but i think it is the valve train tapping, can i adjust them ??