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GSpence2 gave positive reputation to a post in a topic: stutter and hesitation if fuel level above 1/4 tank!
This is what melted pistons scoring & piston slap looks like.
This is what melted piston slap & cylinder scoring looks like.
we cleaned the pumps since we had to take them off anyway. The valves will be changed along with all the other hard to get at stuff while the engine is out. thanks for the tip on the solenoids. I'll upload more pics as we go forward.
Hi Lewis. Yes We have all new vacuum lines gaskets seals O-rings breather hoses. We've already checked & cleaned the SAI's while we were waiting for parts. We also ordered some silicone boost hoses too. After it's all said and done I plan to put another 130K miles on this beast!
Hey guys. Sorry I posted a reply on the wrong thread. Update. Engine out and what mess. Long story short the timing chain is stretched t least one guide has broken the idlers are worn the coolant pipes seals are leaking the valve cover gaskets were leaking the breather hoses were broken and the exhaust is worn. I decided to install sport cats rear cat bypasses and a sport pipes. I'll keep ya posted.
Okay so engine out and rebuild underway. On getting the engine out we realized the right side cat braided steel had separated so now it's new cats and an engine rebuild. I figured in for a penny inn for a pound. I've decided to install sport cats and a rear cat bypass set up. I'll keep ya posted. Oh almost forgot. The timing chain is stretched at least one guide is broken the seals on the aluminium coolant pipes are leaking as we're the breather lines and oil cooler.
GSpence2 replied to Zakowsky's topic in 9PA, 9PA1 (Cayenne, Cayenne S, Cayenne Turbo, Cayenne Turbo S)great post thanks
straight to knock. had not heard it prior to and no issues prior to the low oil light.
Here's a video of my own engine - currently being rebuilt after 130K. you'll notice that after the SAI pumps shut off the light knock becomes audible. From inside the car you don't hear it at all. Ambient temps were mid to high 30's at the time. What precipitated this finding was a low oil light following which I opened the hood to find oil everywhere and oil some oil in the coolant - looks like it just happened. Seems the oil cooler failed and the fan was spraying oil everywhere & I had no idea until the light came on. Add insult to injury, further tear down revealed the Y-pipe had not just cracked but was broken so major leak there and also the check valve adjacent to the AOS on the left bank was also cracked. Mind you no check engine light during any of this. At this point I told the tech to just change all the breather lines and vacuum lines while he was in there. Before doing this though he did pull the valve covers (I seem to change the gaskets every 2-years anyway) and no damage to the top end was found so definitely a bottom end issue. My tech advised he doubts it's a bearing issue because the engine still runs strong and compression was good all around when he checked, just the knock. I'll keep ya posted. P1000116.wmv
Roxie/Frank - check this out.
Some very good advice here Roxie. As usual Messrs. Big and Weller are on point. I am currently having an expensive repair done on my '04 CTT for this very issue. It ain't cheap and is definitely not DIY for the uninitiated. If you have other options or choices of CTTs to choose from I would up my ante and look at maybe 955 Turbo S sans issues, or a 957 Turbo. Any money you may have saved by purchasing an inexpensive CTT with issues and the DIYing the repairs yourself, you can easily and probably equivalently put towards a newer CTT in better condition sans issues.
Well one thing we know for sure, the intake plenum is cracked. Tech smoked the engine first and the hose going to the AOS is leaking too as are several other lines. He hypothesizes that the cracked plemun caused an over-pressure condition in the system and may have damaged the VVT actuator because the tapping noise is coming from the right side (looking head-on engine) valve cover and from the center front engine cover (timing chain?). The forward portion of the gasket is where the main oil leak is coming from. They're tearing it down now to get a look at the oil cooler, etc... I'll keep ya posted.
Ah Brother Lewis I so pray you are correct! We'll know more tomorrow, or more likely Tuesday. Fingers crossed. And tell ya what, if it is the oil cooler then I'll buy the first three rounds at the O-Club!
Morning Big. Coffee? It's got just under 131K miles. Not sure what let loose. The fan is spraying oil all over the place so it's hard to tell where it's coming from. I'm thinking it's one or possibly both head gaskets because the coolant definitely has oil in it, thankfully not a lot but it's in there. Some how it doesn't smell like fuel though, still smells like fresh sweet coolant so this is definitely a new thing. Odd thing is I've still got decent power delivery and gitty-up! No bangs, bucks, CEL, hard starting, only a low oil light and then the discovery. Both valve cover gaskets were already weeping and I had an appointment scheduled next week to remedy those anyway. They seem to last about 2 years because every two years at this same time I have to have them changed. I was planning on doing a full fluid and filter swap anyway. I guess now I'll plan on doing a rebuild or engine swap. Well, at least Santa has a sense of humor then
An oil warning light, oil everywhere, a horrible rattle rattle and an untimely huge repair bill! (You gotta say it to the tune of the 12-days of Christmas. At least that way it's tolerable.) P1000116.wmv