In , Volkswagen introduced what would become one of the most well known engine designs of modern times - the Pumpe Duse PD diesel engine. In a departure from many of its rivals, the PD used unit injectors rather than a common rail system, despite most manufacturers thinking that common rail was the better design.
Volkswagen proved them wrong for many years, with these strong, reliable, powerful and economical engines being a huge part of what made diesel cars popular. The four cylinder PD engines came in 3 distinct generations - 1. In addition there is the small 3 cylinder 1. There are a few other minor variants but we will keep this simple. Underpinning all these engines is the same unit injector PD technology.
This blog is going to take a quick look at two hardware adjustments that can be made on any PD engine to optimise performance - Cam Timing, and Actuator Rod Length. These adjustments differ slightly depending on the model, but are essentially achieving the same goal on any PD engine. At Darkside we check and adjust these settings on every vehicle we tune.
Cam timing is the position of the camshaft relative to the crankshaft - it is important on all cars, and is usually set when the cambelt is fitted or replaced, by locking the cams in place and lining up the crankshaft with timing marks. On a PD engine, the timing can be further fine tuned using the adjustable cam pulleys located on the end of the cams.
Using diagnostic software it is possible to check the synchronisation of the crank and camshaft. When the cam timing is out by several degrees, usually the car will idle rough and may struggle to start, along with reduced performance. When the cam timing is only slightly out, symptoms may not be obvious to customers, but can still affect fuel economy and make a measurable difference on the dyno. Next question - is my 1. So I take it that the can't be 'chipped' to become a Without major hardware changes, you will only see around bhp from the engine.
Originally Posted by The Bishmeister. Page 1 of 2 1 2 Last Jump to page:. Bookmarks Bookmarks Digg del. The time now is PM. All rights reserved. Image resizer by SevenSkins. Bookmarks Digg del. Had the car since dec '10 and from then. The injectors had gone, several door latches, regen not doing what it should, pair of rear shockers gone. I would say that that is alot of problems.
But hey, it could be just my luck? It's funny how the odd person who might have had a bad experience with a car will advise people new into the "scene" to "avoid it like the plague!
Or recently, even avoid the marque altogether Just because you have had your own bad experience with your car, doesnt mean its a bad car and others shouldnt go near it. While you represent 1 person, there will be thousands of people who also drive the same model PD in this case , who love the car, and would highly recommend one including me. I've owned mine for 3 years so far 07 plate , only had a DPF sensor need replacing.
Just last night driving home from work, it reminds me why I love the car so much - plus the Leon looks great too, compared to other "bland" looking cars on the roads EDIT: Plus for a few here who have had a whole handful of mechanical failures, sounds like you've bought a right "Lemon".
I've never had all those those go wrong in ALL my 15 odd years of motoring! Last edited by a moderator: Sep 20, Kwok said:. I like the way some comments are exaggerated. No one mentioned anything like avoid like the plague. Or saying the car is bad. FYI I still own the car and had no problems so far after the initial ones ironed out. But I like the way you assume. The way you say in all my 15 years of motoring.
Yet you've only had this car for 3 years. Does that mean you know everything??? Lemon or not all cars have problems and it's good to know what they are. Buying a pd would mean buying second hand. So I would guess that would be usefull info to know. If you buy the cr then more and likely be newer and possibly have more warranty left on it.
Btw I hope your injectors go! Sep 3, 1, 0 Walsall, West Mids. The difference between the PD and CR is the way in which the fuel diesel is pushed into the engine. They are both 2ltr in capicity but i am not sure if they are different engines. The CR is known as being a cleaner burning engine, is slightly more frugal and less aggresive in it power delivery which probably explains the mpg thing to be honest.
They both make the same standard power though and will deliver the same levels of performance. Which you go for depends on what you want and what you can afford. No offence to the pre face lift owners but my preference is the FL CR FR, it will have existing manufacturer warranty as they should all be within 2 years old, imo the FL has a nice interior and aside from the less aggressive front end looks better overall.
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