Suggesting that wear was more likely if you drove your car hard a lot of the time?
Printable View
Suggesting that wear was more likely if you drove your car hard a lot of the time?
It's the same pump, hence disclaimer for them as well
ah yes, which would mean that wear on the cam lobe itself is something that may not be well documented. I am assuming that the condition of the cam lobe can't be inspected unless the valve cover is off?
I had my cover off recently didn't notice any wear problems, I have 10000-15000 ks on mine
When installed it it had more lubrication on it than the motor had so if anyone is suggesting I have installed wrong they can go and jam it... I installed it by how the instructions where and watch the youtube videos as I was doing it.... it was installed as everyone elses that I have seen...
Sent from my GT-I9305 using Tapatalk 4
Here is what I was referring to. It refers to both the follower and the lobe, specifically lobe wear.
http://www.autotech.com/download/fuelPump.pdf
"both street unit and autotech says this is a non issue for mazdaspeed3. only applies to certain cams for VW and Audi"
quoted from mazda3forums. being honest, I doubt the cause will be identified. first case of it happening and it could taper down to many factors such as how it was driven prior to installation.
Wasn't saying you didn't install correctly. I'm pretty sure everyone is 110% sure of their installation as it's such a vital part, just wondering about causes for this to happen.
I'll be taking VC off soon so i'll check it out and see if there's any marks on mine..
Check the spring and travel... I've seen wear like that on other cammed systems and it usually indicates the clearances and travel on the Cam Lobe/Follower are not set up correctly. It could also be a manufacturing fault in the Follower. The surfaces should have a similar hardness, so that one doesn't wear faster than the other.
In addition to that, you'll get similar wear in a different spot if the follower is leaving the lobe.
I am personally leaning towards this issue being related to the erratic loading and unloading of the inlet cam, in particular cold starts when the extremely worn VVT is hammering away waiting for oil pressure to take some effect.
The bucket was fine, not showing any issues. The valve lobes where ok as well as the buckets.
I have pulled apart the VVT unit today and will add a post to my other VVT thread.
http://www.ozmpsclub.com/forum/engin...tml#post274859
I pulled apart another MPS6 today, high k's on it and really bad VVT failure! The first thing I removed was the HPFP/housing to inspect lobes, much to my surprise they are what I would call normal, the car has stock HPFP. I was hoping to see a trend between VVT fails and camshaft HPFP lobe wear :/
I've had mine apart a couple times (once for VVT, and once to change out valve covers) and I didn't notice any wear at that time. The last time I took it off I think it had been something like 30,000 miles with cpe fuel pump.
Like others have said before me, this is strictly for the VW/Audi guys. They have even been known to have camshafts break after installing upgraded FP. The Mazdas are not subject to the same issues though. The added wear could be from lack of oil on start up which could have caused the wear then.
If asking me, what I mean is the amount of time it takes for oil pressure to build up in the VVT unit to stop it hammering. The bucket area hasn't been starved of oil in the above instance.