Is Grease killing my TDI Injection Pump? I filter down to 1 Micron
May 9, 2012 - 5:46am
Fellow greasers,
I have went through 2 IP's in 6 months. The first one had 170k miles on it and the most recent one had approx 155k. I filter all of my oil down to 1 micron and I am trying to figure out what my issue is. I had my first IP rebuilt by DFIS in Portland and they didn't mention a thing about grease clogging or even ask if I ran it. What they mentioned was that it looked like it had high mileage on it. I'm at a loss at to if I am just having bad IP luck or just have bad luck?
Here's my filtering process 200 micron > 150 micron > 5 micron > 1 micron. I use carribean filters. I heat my oil to over 220* for approx 15-20 minutes.
Any thoughts?
Thanks
Jake
May 9, 2012 - 7:26am
#2
Phil,
Yes they did come from two different cars. The first one may have been a scam rebuilt one. The poor girl that owned it before paid $900.00 for it. It is a bosch. I have not done the water test but have ran 100's of gallons through my TDI and F350.
Of note I recently had my IP sprocket slip "all the way retarded" and then after fixing it rattled for a few days. After I put new bolts in it seemed like it was better. Until yesterday....on the VAG-COM the timing is bouncing all around approx 5-10.
Thanks
Jake
May 9, 2012 - 11:50am
#3
recently had my IP sprocket slip "all the way retarded" and then after fixing it rattled for a few days. After I put new bolts in it seemed like it was better. Until yesterday....on the VAG-COM the timing is bouncing all around approx 5-10
This is a mechanical problem not related to grease.
Why sprocket slip? Why rattled for a few days? Why the timing is bouncing?
Cam / key / sprocket / bolts / pump drive shaft / timing belt / belt tensioner problem caused rattle then kill the pump?
You have to determine what's the cause of the problem.
Also I would get a rebuilt pump (professionally rebuilt, not done by a regular mechanic)
I can rebuild engines and I have no confidence in rebuilding that pump.
My 2 cents
May 9, 2012 - 8:29am
#4
Whats the fix? Rebuilt IP? Can I swap some parts. I have a spare that I will be putting on but wondering if this is worth anything anymore.
May 9, 2012 - 12:16pm
#5
See edited post #4 above.
Does the timing belt slip?
http://www.myturbodiesel.com/1000q/a3b4/vw-passat-jetta-tdi-timing-belt-removal-mk3.htm
http://www.myturbodiesel.com/1000q/a3b4/vw-jetta-passat-tdi-timing-belt-replacement-install.htm
May 9, 2012 - 12:54pm
#6
Wonderboy:
Have you checked several samples the water contant via hot pan test? The mechanic mentioned "ware on the IP". Microscopic water will cause failure over time in an IP rather than VO. Please post your findings.
May 9, 2012 - 1:49pm
#7
Veggpwr,
The IP bolts were the stock "stretch bolts" probably wore out. Timing is good to go.
Rene,
I will be doing the pan test on my current veggie oil tonight.
Thanks
Jake
May 9, 2012 - 1:59pm
#8
Let us know what you find out. Rebuilt parts are always very supect; probably even more so for an IP. I don't know what a new one costs, but it might be worth it. Or a used one. If you could find a low mileage wreck...
May 9, 2012 - 2:44pm
#9
Phil,
For VW 1.9 TDI ALH engine codes they use 2 Injections pumps.
1. 10mm pump for 5 speeds cost approx $1200
2. 11mm pump for Automatics cost approx $2100 I had one rebuilt for $997.00
I had DFIS in Portland do it for me. They have good street cred and give a 1 year warranty.
May 9, 2012 - 6:19pm
#10
The IP bolts were the stock "stretch bolts" probably wore out. Timing is good to go.
So you are saying that the rattle noise, bouncing timing etc. are caused by the defective pump. Everything will be fine after replacing the pump.
Actually can you tell what's wrong with the pump? Can you rotate the pump shaft freely by hand? Does the pump have tendency to seize up? So the engine runs fine with the pump, just have the rattle noise and bouncing timing?
May 10, 2012 - 6:20am
#11
Veggpwr,
I haven't taken the pump all of the way off yet. These symptooms are much like what I had before and the end state is an IP that will start and get the car running but once it gets hot or gets shut off it won't start again because the dynamic timing is not advancing/retarding for the start.
I wouldn't say it runs fine. I would say it runs ok...but again I don't want to go drive around and play the tow home game like I did last time I had these issues.
May 10, 2012 - 5:17pm
#12
but once it gets hot or gets shut off it won't start again because the dynamic timing is not advancing/retarding for the start.
I think there is a mechanical governor inside the pump that will send fuel to injector at different timing depending on the pump shaft rpm. Or is the timing electronically control? I am NOT a TDI guy but I did have expercience with an IP on a 91 Jetta.
Look like you have problem (stricky) on that timing control parts of the pump. Have to open the pump to see.
Please post the finding.
May 11, 2012 - 12:31pm
#13
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Were those pumps on two different cars? I think you were probably just unlucky, but that is pretty unlucky. These Ips are good; that is low mileage for one to fail. Have you ever tested your oil for water content?