pentastar head problems?
JK Freak
Joined: Feb 2012
Posts: 692
Likes: 12
From: Arkansaw, Wi
Really simple, I bought one of these ELM 327 bluetooth obdII readers off ebay..
And then I bought the full version off of the market place of Torque. here is their website Torque — OBD2 Performance and Diagnostics for your Vehicle
And there are like a 100+ video reviews of Torque on youtube.
I also like the fact I can get and reset fault codes with it too.
And then I bought the full version off of the market place of Torque. here is their website Torque — OBD2 Performance and Diagnostics for your Vehicle
And there are like a 100+ video reviews of Torque on youtube.
I also like the fact I can get and reset fault codes with it too.
JK Enthusiast
Joined: Dec 2011
Posts: 115
Likes: 0
From: Connecticut
This is not a snap shot. You plug it in and just drive. Leave it plugged in as long as you want. In fact, I've left the OBDII plugged in and I could sit in the comfort of my living room watching TV and have the OBDII report to my phone and I could sit here and watch the engine cool down over a couple of hours. When I drive I-70 I like to have it plugged in and watch temps as I climb over the passes at 12K feet above sea level.
JK Super Freak
Joined: Mar 2012
Posts: 1,476
Likes: 3
From: Mile High Colorado
JK Enthusiast
Joined: Dec 2011
Posts: 115
Likes: 0
From: Connecticut
It is normal for hydraulic lifters to be a little loud when you first start the engine. If it stops, it's probably nothing to worry about. Mine ticks constantly and loudly.
From wikipedia:
"There are a number of potential problems with hydraulic lifters. Frequently, the valvetrain will rattle loudly on startup due to oil draining from the lifters when the vehicle is parked. This is not considered significant provided the noise disappears within a couple of minutes, typically it usually only lasts a second or two. A rattle that does not go away can indicate a blocked oil feed or that one or more of the lifters has collapsed due to wear and is no longer opening its valve fully. The affected lifter should be replaced in the latter situation."
From wikipedia:
"There are a number of potential problems with hydraulic lifters. Frequently, the valvetrain will rattle loudly on startup due to oil draining from the lifters when the vehicle is parked. This is not considered significant provided the noise disappears within a couple of minutes, typically it usually only lasts a second or two. A rattle that does not go away can indicate a blocked oil feed or that one or more of the lifters has collapsed due to wear and is no longer opening its valve fully. The affected lifter should be replaced in the latter situation."
From your Wikipedia statement above it does not say exactly how many miles are on the motor it is referencing. It does say with wear this will occur.
My engine just turned 8000 miles the head was replaced at 3500; it does not tic at all; start-up or at any other time.
JK Super Freak
Joined: Mar 2012
Posts: 1,476
Likes: 3
From: Mile High Colorado
I'm sorry to say, a brand new motor, with hydraulic valve actuation, should not tick at start-up. After the motor reaches 135k or so yes you will most likely get ticking at start-up for a short time frame.
From your Wikipedia statement above it does not say exactly how many miles are on the motor it is referencing. It does say with wear this will occur.
My engine just turned 8000 miles the head was replaced at 3500; it does not tic at all; start-up or at any other time.
From your Wikipedia statement above it does not say exactly how many miles are on the motor it is referencing. It does say with wear this will occur.
My engine just turned 8000 miles the head was replaced at 3500; it does not tic at all; start-up or at any other time.
JK Enthusiast
Joined: Dec 2011
Posts: 115
Likes: 0
From: Connecticut
Mine ticked on startup until I changed the oil and went with Mobil 1 synthetic. Only tick I've heard since then was on a 350 mile none stop drive from Denver to Ouray to the top of Yankee Boy Basin 12K feet. Got to the top got out to take pictures heard the tick coming from the passenger side. Shut the engine off for about 15 minutes, took a hike, came back, started it back up and was as quite as can be. FWIW, this was with 10,100 miles on the jeep at that point.
JK Junkie
Joined: Nov 2007
Posts: 2,192
Likes: 2
From: SoCal
Really simple, I bought one of these ELM 327 bluetooth obdII readers off ebay..
And then I bought the full version off of the market place of Torque. here is their website Torque — OBD2 Performance and Diagnostics for your Vehicle
And there are like a 100+ video reviews of Torque on youtube.
I also like the fact I can get and reset fault codes with it too.
And then I bought the full version off of the market place of Torque. here is their website Torque — OBD2 Performance and Diagnostics for your Vehicle
And there are like a 100+ video reviews of Torque on youtube.
I also like the fact I can get and reset fault codes with it too.
33
Last edited by 33 williys 77; Aug 28, 2012 at 05:58 PM.
JK Enthusiast
Joined: Dec 2011
Posts: 115
Likes: 0
From: Connecticut
If the engine stops in a position such that a camshaft lobe is facing in a direction parallel to the valve, the hydraulic lifter for that valve will be under pressure of the valve spring. This pushes the oil out of the lifter. When the engine is started, the lifter needs to fill with oil again in order to operate normally. The amount of time this takes varies depending how much oil was pushed out of the lifter, what position the lifter is in, the viscosity of the oil in the engine, the temperature of the engine oil, the amount of time it takes to build oil pressure, etc. People usually notice it more in cold weather because the oil is thicker and it therefore takes more time to enter the lifter.
There are tons of other non-Chrysler vehicles with hydraulic valves that tick when they're started. There are forums all over the internet dedicated to this topic. After doing a quick search and following a few links I see reports of Chevy trucks, Corvettes, Lexus', Lexus', and BMWs exhibiting this behavior. Here's a Silverado with 4k on it that ticks on startup:
https://www.youtube.com/watch?v=4lB9bKDKSms
Once you understand why it's happening, you'll also understand why it would not exclusively affect high-mileage engines.
In the case of SabFanInked84, I can't say for sure whether there is a problem with his engine or whether the ticking indicates a potential problem. I don't think we could know that for sure without tearing his engine apart. I know if I were him I wouldn't lose any sleep over it, though.
There are tons of other non-Chrysler vehicles with hydraulic valves that tick when they're started. There are forums all over the internet dedicated to this topic. After doing a quick search and following a few links I see reports of Chevy trucks, Corvettes, Lexus', Lexus', and BMWs exhibiting this behavior. Here's a Silverado with 4k on it that ticks on startup:
https://www.youtube.com/watch?v=4lB9bKDKSms
Once you understand why it's happening, you'll also understand why it would not exclusively affect high-mileage engines.
In the case of SabFanInked84, I can't say for sure whether there is a problem with his engine or whether the ticking indicates a potential problem. I don't think we could know that for sure without tearing his engine apart. I know if I were him I wouldn't lose any sleep over it, though.
I believe the majority of car manufacturers employ hydraulic valve actuation on cars produced today. Most of them don't have problems. I used to be in the VW/Audi camp. I traded in a 2001 TT for my JKR. This engine had hydraulic valve actuation, it had well over 80k miles; this engine never ticked. VW's engines are bullet proof they all use hydraulic valve actuation; you don't hear any tics.