I changed the oil in our 06 Grand caravan. I used Valvoline MaxLife 5w30 and a fram tough guard filter. Since doing so when doing a cold start I get a second or two of lifter chatter. Defective filter? Any suggestions?
Only start up noise that I've ever had on an engine was with a Fram filter.
Took it off, threw it away... noise went away.
Could be an ADBV problem.Are you guys saying the oil flow is blocked or reduced for a few seconds with certain oil filters?
If it didnt make a noise before then it probably has something to do with the filter or a one in a million coincidence. I had a engine that made startup noise with a Fram Ultra but not the Napa Gold It always got prior to, switching it out got rid of the noise instantly.
Are you guys saying the oil flow is blocked or reduced for a few seconds with certain oil filters?
No idea but the Ultra only did it one this one engine with no issues with any other. It is a good filter but a defective ADBV or some sort of compatibility issue is a possibility.
Another question.
Based on what I've read, at startup or up to a few seconds after startup , the engine is running on leftover oil up in the engine parts.
remember the "intelligent" oils or oils with ester that cling and designed for this purpose ...
That tells me there is not enough time for the pump to be pumping any significant amount of cold and more viscous oil very effectively for the first few seconds. So how does adbv come into this equation during the first few seconds?
by design, how quickly is the oil squirted or should be available up in the engine parts at startup ?
I have never had that problem. My truck ticks when it is warming up because it has hydraulic lash adjusters lifters so the oil has to get there to pump them so they won’t tick or knock it usually doesn’t take that long warm or cold and I use 10W-40 oil in it.
In 40 years of car ownership, I've never had an engine tick* on start-up. Some had hydraulic lash adjustment. Some didn't. Some have roller cam lifters.
None of them ticked.
This is not normal. Lifters don't need to pump up on every start. Either the lifters are bad, or the filter is...or, see below...
*Valve tick. I've had an exhaust manifold leak - they sound remarkably similar. A stethoscope is so very useful...
In 40 years of car ownership, I've never had an engine tick* on start-up. Some had hydraulic lash adjustment. Some didn't. Some have roller cam lifters.
None of them ticked.
This is not normal. Lifters don't need to pump up on every start. Either the lifters are bad, or the filter is...or, see below...
*Valve tick. I've had an exhaust manifold leak - they sound remarkably similar. A stethoscope is so very useful...