Problem Description and Possible Solution
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.
Problem Data
RepairPal Verified
Average mileage: 132,941 (75,000–267,000)
Engine affected: 3.2L V6
26 people reported this problem
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
i,m not sure, but i think it is the valve train tapping, can i adjust them ??
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.
I have a ticking noise that has been on both my current Rodeo and my old Rodeo (94). My mom said she too had the noise in her Rodeo (unknown year) and used Lucas oil treatment to fix it. I've yet to fix it on mine as I'm currently in the process of changing valve cover gaskets but I'll try to clean them before I put them back on and use Mobil 1 oil.