Finally found the problem !!!

**fly300kts** · 01-07-2011 02:05 PM

Hi Guys,
For a month now, we get cold fronts in FL and since, when starting the car in the morning, I was hearing a really bad metallic banging noise, almost like a bad valve but once the car was warm, the noise would disappear. Checked the oil, WagCom for codes but everything was fine.
This morning, I replaced my cam follower, like every 15 000 Miles (and still, everything is fine at 100 000 miles). Then, started the car to check for leaks and I finally found where the stupid noise is coming from:
First picture to locate the area of concern:
Vacuum pump behind the High Pressure Fuel Pump. Notice the black traces in the area

Now some close up:
Check the difference between the 2 pictures and notice the gap when the elbow is pulled. When cold, the hose is really rigid and since the engine shakes a bit, it triggers the banging noise. Once warm, the hose absorbs the vibrations and the noise is gone. Of course, there is a leak as well.
Went to the dealer to see on ETKA what spares were available and the Vacuum pump housing needs to be replaced. No, thank you. Grabbed some JB Weld on my way home and tomorrow, will pull off the elbow and will apply a nice bead around the metallic tube of the vacuum housing

Let me know if any question

Phil

Phil

**ny2flb7a4** · 01-07-2011 02:20 PM

Good catch Phil. My car has been sounding a little strange when cold as well. I guess that's something we'll look at tomorrow as well.

**fly300kts** · 01-07-2011 02:21 PM

Call me when ready to stop by

Phil

**Gil2.0T** · 01-07-2011 02:27 PM

ahhhhhh

**Coderedpl** · 01-07-2011 02:35 PM

I'll have to take a look at mine.
Mind posting up pics of when you get it fixed?

**Inked** · 01-07-2011 02:37 PM

good to know for us fl people...and u gotta love jb weld, that stuff will fix anything lol

**Inked** · 01-07-2011 02:37 PM

Originally Posted by Coderedpl

I'll have to take a look at mine.
Mind posting up pics of when you get it fixed?

x2

**Sly Raskal** · 01-07-2011 03:02 PM

Good catch.

You replace your cam follower every 15K miles?! I really should check mine just to ensure there isn't any damage, but i'm only at 20K

**Inked** · 01-07-2011 03:43 PM

just went and checked mine...and it looks just like urs with the gap....did u have to loosen that clamp to fit the hose tighter or just push it down...i started to push it without doing anything to the clamp but it seemed pretty firm and didnt want to brake anything...

**fly300kts** · 01-07-2011 05:07 PM

Originally Posted by Coderedpl

I'll have to take a look at mine.
Mind posting up pics of when you get it fixed?

No problem
I just put on the JB Weld to dry overnight

**fly300kts** · 01-07-2011 05:08 PM

Originally Posted by Sly Raskal

Good catch.

You replace your cam follower every 15K miles?! I really should check mine just to ensure there isn't any damage, but i'm only at 20K

Yes, a brand new one every 15K. Starting to have a nice collection

phil

**fly300kts** · 01-07-2011 05:09 PM

Originally Posted by Inked

just went and checked mine...and it looks just like urs with the gap....did u have to loosen that clamp to fit the hose tighter or just push it down...i started to push it without doing anything to the clamp but it seemed pretty firm and didnt want to brake anything...

Well, the gap is not normal. Try to push the elbow down until the rubber contacts the vacuum housing. Then you know what to do :-)

Phil

**Sly Raskal** · 01-07-2011 05:17 PM

Originally Posted by fly300kts

Yes, a brand new one every 15K. Starting to have a nice collection

phil

How hard is it to do yourself? And how much does it roughly cost you to perform?

**fly300kts** · 01-07-2011 05:31 PM

Originally Posted by Sly Raskal

How hard is it to do yourself? And how much does it roughly cost you to perform?

Takes me now 20 mn and I have the PITA setup (banjo)
Since I do all my maintenance, I don't know how much a shop would charge but at list, 1 hr of labor

phil

**rs6** · 01-07-2011 06:01 PM

Originally Posted by fly300kts

Takes me now 20 mn and I have the PITA setup (banjo)
Since I do all my maintenance, I don't know how much a shop would charge but at list, 1 hr of labor

phil

That's impressive. It is a lot easier to do after you've done it once, but 1 hour is about right. Book time may be higher.

As for the leak, I probably would have just stuck some dum dum on it or a gob of gasket sealer, these days I'm lazy like that.

**thenofjboy** · 01-07-2011 06:16 PM

Originally Posted by fly300kts

Yes, a brand new one every 15K. Starting to have a nice collection

phil

got pics? haha its almost like a semi-trophy collection......what oil do you run btw? TIA

good stuff on finding your problem & you cant ever go wrong with JB Weld, great product

**fly300kts** · 01-07-2011 06:27 PM

I run Mobil 1 5-50 for the past 3 years.
Oil change every 5000 miles with filter and follower every 15K since I own the car

Like my triplets?

Phil

**thenofjboy** · 01-07-2011 06:47 PM

^ good pic!! do you recall the miles on each follower....

**fly300kts** · 01-07-2011 07:58 PM

Originally Posted by thenofjboy

^ good pic!! do you recall the miles on each follower....

Of course, mileage written on each box

Phil

**Inked** · 01-08-2011 05:40 AM

worked on it this morning and got it fitted nice...ill pick up some jb weld as well on my way home from work tonight....nice find! i would asssume that most everyone who lives in florida will have this leak with our rise and fall temps daily! Thanks Phil

**fly300kts** · 01-08-2011 05:49 AM

Just drove this morning and freaking noise is finally gone. Since I also replaced the plastic hose going from the PCV to the intake, I can't be sure what fixed it but this issue is also gone!!!

Phil

**b7kevin** · 01-08-2011 09:05 AM

Interesting I will definately check mine now. As for the cam follower issue, i Just had my cam shaft, HPFP, follower replaced by inskip audi in RI. For 1800, they do great work. Also replaced my clutch pressure switch (cruise control) and my intake flapper motor. I just bought this car used and thank god I was under waranty. Mind you I will always check and replace it every 2 oil changes now (oem) every 4 with the hardened version from AWE??? believe that is the company.

**Cosworth** · 01-08-2011 05:58 PM

I notice the same thing up here in Tahoe, especially in this winter. Did it almost sound like click click click or loud injectors? Akin to a Diesel?

**fly300kts** · 01-08-2011 06:45 PM

Originally Posted by Cosworth

I notice the same thing up here in Tahoe, especially in this winter. Did it almost sound like click click click or loud injectors? Akin to a Diesel?

It was way louder than injector noise

Phil

**Coderedpl** · 01-08-2011 06:57 PM

Checked mine real quick, didn't get a super close look but it seemed ok at first glance. Will need to peek at it more =P

**Inked** · 01-08-2011 10:36 PM

i love jb weld

**Cosworth** · 01-09-2011 08:57 PM

I notice mine has a space like yours, will try some JB Weld next weekend. I also notice my EuroJet PCV hoses were a little lose.

Also I saw the v4 Leds you did for sacking23.... They look amazing! You rock!

**fly300kts** · 01-10-2011 05:25 AM

Originally Posted by Cosworth

I notice mine has a space like yours, will try some JB Weld next weekend. I also notice my EuroJet PCV hoses were a little lose.

Also I saw the v4 Leds you did for sacking23.... They look amazing! You rock!

If you have the space, push the elbow down first and prior applying JB.
Thank you for the led

Phil

**Charles** · 01-10-2011 07:46 AM

Did it have any effect on performance? I've been noticing my car driving somewhat sluggish for the first 60 seconds or so, then a noticeable change and it drives fine after that. It seems as if the fuel is retarded for some reason, then once the car gets warmed up, bam! I can hear a whoosh from the turbo and after that, it's cool. Wonder if this has anything to do with your problem.

**fly300kts** · 01-10-2011 08:04 AM

Originally Posted by Charles

Did it have any effect on performance? I've been noticing my car driving somewhat sluggish for the first 60 seconds or so, then a noticeable change and it drives fine after that. It seems as if the fuel is retarded for some reason, then once the car gets warmed up, bam! I can hear a whoosh from the turbo and after that, it's cool. Wonder if this has anything to do with your problem.

Not sure but you can always check the area

Phil

**B72.0T** · 01-10-2011 09:41 AM

So just push it down into its place and slap JB weld on top of it?

**airbornerifleman** · 01-10-2011 10:04 AM

Originally Posted by B72.0T

So just push it down into its place and slap JB weld on top of it?

X2???

**fly300kts** · 01-10-2011 10:11 AM

Originally Posted by B72.0T

So just push it down into its place and slap JB weld on top of it?

Yes, that's simple. Degrease the area as well

Phil

**B72.0T** · 01-10-2011 11:01 AM

So yours is holding up pretty good? I'm off to Advance Auto Parts to get some JB.

**fly300kts** · 01-10-2011 11:08 AM

Originally Posted by B72.0T

So yours is holding up pretty good? I'm off to Advance Auto Parts to get some JB.

Yes, JB did the trick.
Best is to apply on warm engine and let try overnight

Phil

**jimrobbington** · 01-10-2011 11:16 AM

Phil, you are my hero. This thread has nothing to do with my car, but I never would have found that. You are a true AZ community asset.

**fly300kts** · 01-10-2011 11:19 AM

Originally Posted by jimrobbington

Phil, you are my hero. This thread has nothing to do with my car, but I never would have found that. You are a true AZ community asset.

Don't make me blush
Thank you for the kind words

Phil

**naiku** · 01-10-2011 11:42 AM

If this fixes the fluctuation in RPM when cold I may well have to give it a try as well.

**B72.0T** · 01-10-2011 11:46 AM

Originally Posted by jimrobbington

Phil, you are my hero. This thread has nothing to do with my car, but I never would have found that. You are a true AZ community asset.

Definitely.

Originally Posted by fly300kts

Don't make me blush
Thank you for the kind words

Phil

Did you apply it on the inside circle of the housing & also on top of the entire thing? Sorry but the "instructions", to me, aren't so clear, and I want to do it right

**fly300kts** · 01-10-2011 12:00 PM

Just push down the 90 degrees elbow and apply the JB weld at the junction of the black tube and the pump housing

Phil

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