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Sedans Volkswagen Jetta VW Jetta TDI
3707 messages, Last post on Nov 30, 2009 at 6:14 PM
You are in the Volkswagen Jetta Forum. Your Hosts are pat & karens
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Replying to: mike91326 (Jun 28, 2009 6:59 pm) With that said, you need to concentrate on making the piston-rings seal as best as they can BEFORE the cylinder-walls glaze. It is nearly imposible to seal the rings after the walls are glazed. This type of engine tends to burn oil and get poor MPG. Many words have been written about how to seal the rings to the cylinder-walls. Basically you need to use the turbocharger so the rings are forcefully pushed into the cylinder-walls. This means AGGRESSIVE ACCELLERATION - followed by DECELLERATION. You can start doing this after about 5,000 miles.... it takes over 20,000 miles to acheave full cylinder compression in a TDI. You do this with a fully-warmed engine. While on highway in 5th gear allow vehcile to slow to about 40MPH....then use FULL THROTTLE to get up to about 70MPH ... followed by decel back to speed-limit. Then drive normally for at least 20 minutes to allow temp to stabilize. Another way to do this is to use FULL THROTTLE ACCELLERAION from a stop to get up to 70MPH ... followed by decel back to speed-limit...again followed by cooldown period. You should do this AT LEAST 4 times per tank of fuel as long as you own the vehicle. There are benefets to keeping the turbocharger clean too! I personally seated the rings in my TDI using this process and enjoy up to 56MPG. (and have spreadsheet of every drop of fuel to prove it!) At over 100,000 miles, my engine is finally "loosened up" and running very well.
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Replying to: wile (Jul 01, 2009 4:45 pm) |
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Replying to: bpeebles (Jul 01, 2009 5:23 pm) re: SMOKING -- probably dirty injectors, yep.
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Replying to: wile (Jul 01, 2009 4:45 pm) |
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I noticed this Forbes article on a www.tdiclub.com web site VW Tops Quality Survey
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Replying to: ruking1 (Jul 02, 2009 6:36 am) "To get the rankings, Strategic Vision calculated the index based on survey questions about reliability, vehicle characteristics, dealership experience, styling, interior and exterior design and their overall perception of initial quality." when it comes to strictly reliability surveys, I like to look at least 2-3 years in the field before judging a car. Sometimes early production glitches get fixed, so first year record doesn't look as good as second year and beyond---and other times, a car starts out great but problems develop in 40-50K miles.
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Replying to: Mr_Shiftright (Jul 01, 2009 6:13 pm) 04/05 passat TDI had decent grunt but also a now-apparent design flaw - chain driven oil pump apparently fails on *every* one of the 04/05 passat TDIs, and now VW sells a replacement gear-system instead. it's $2000+ job, and usually not under warranty. ! As far as TDI & redlining, i agree there's no reason to ever get close to redline or even yellow line, but seems like the consensus is that it's good to give the TDI a daily blast up to a decent rpm to let it the exhaust "blow its nose" of accrued soot in an old/DIRTY diesel, and let the turbo spread its 'vanes' . for the new/CLEAN jetta TDI diesel, similarly blasting onto the the highway should help to ensure that the DPF can do its occasional cooking thing.
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Replying to: Mr_Shiftright (Jul 02, 2009 7:36 am) I have been running 2 cars (03 Jetta TDI 119,000 miles /04 Civic 87,000 miles) side by side (even I will say it is an apples to oranges comparison), for easily... 5 years. Needless to say, the "make up" has been off (glitz and glamor) for a very long time, if it ever was on. Hopefully for obvious reasons,  similar mileage (87,000 miles) , BOTH have been completely and utterly reliable. Given both cars' similarities and differences, I have been completely happy with both. The wear items on the Civic are consumed at roughly 2 x the rate of the Jetta. This is interesting in that the Jetta is run harder and faster on the non commute portion and is 435 #'s heavier. I would dare say if I ran the Civic like I do the Jetta, the consumption rate would be more like 3x to maybe 4x's higher !!?? It would also probably be a drag to the 38-42 mpg we now post. One explanation could be "higher" initial quality. Another could be the Civic engineers designed it that way: given that most folks are almost brainwashed about the Civic's quality before most folks even own one. |
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Replying to: elias (Jul 02, 2009 7:58 am) 75% RPMS or 3,825 rpms (of 5,100 redline) that would accomplish the goals. (sorry to hear about the $2k chain driven oil pump issue). |
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I have just taken delivery on a new 2009 Platinum Gray TDI sedan and was reading over the owner's manual which shows four tie down locations in the trunk. My car has two in the back but none up toward the back seat as in the manual photograph. Is this normal for new TDIs or did mine miss out on something that is supposed to be there?
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