ARBY
Veteran Member
OK, so I'm no Wingnut, but I've really been looking to make some sort of contribution to Fred's, so here goes. I've been a fan of LM products ever since I had my first VW, a 1990 Fox wagon. Well, this has got to be the easiest thing to do and is definitely recommended for any TDI with more than 20k miles on the clock. This how-to has been posted elsewhere, my version, is one-person and only takes 20 minutes and about 20 dollars. Here goes:
Parts:
1 can of Lubro Moly Diesel Purge:
1 Fram Fuel Filter, part number on box (from Napa or Murray's), 10 feet of 5/16 ID plastic tubing (Home Depot) and 1 packet of 5/16" vacuum fittings:
1 20oz (at least) empty pop or water bottle (I used a 24 oz. one).
Steps:
1. Cut 3 lengths of plastic tubing, one 22" long, one 8" and one 12" long.
2. Connect the 8" and 12" pieces of plastic tubing to the inline fuel filter.
3. Insert one vacuum fitting into the other end of the 8" piece (this will be connected to the fuel line from the filter to the pump).
4. Insert the other vacuum fitting into the 22" piece of tubing (this will go from the injection pump back to the plastic bottle containing the Diesel Purge).
It should look like this. If it doesn't you have no business working on your car, sell it and buy a Honda.
5. Get your plastic bottle, insert your hoses and stick it between your washer fluid resevoir and the intake pipe.
6. Make sure your hoses are long enough.
7. Remove the bottle and fill it with the Diesel Purge. I have no idea if the DP will eat through the bottle or the tubing, but work quickly but carefully just to be sure.
Precautions: the DP will get hot as it recirculates through the pump, making the tubing more pliable and prone to leaks. It will not leak however, trust me.
8. With the bottle filled and your tubes inserted TO THE BOTTOM OF THE BOTTLE, remove the fuel line which goes from the filter to the injection pump.
You should have something like this, if you don't, go get that Honda, ASAP.
9. I found it helpful to 'prime' the inline filter by sucking some DP through the line so as to minimize the amount of air the pump would have to deal with. Do not get any in your mouth, it tastes horrible. Trust me. Remove the clamp securing the fuel line from the filter to the pump and with your thumb over the clear tube (which should be filled with DP if you primed it properly) quickly insert the clear line with the vacuum fitting into the fuel supply line.
10. Do the same with the return line (which goes from the injector pump back to the fuel filter). The fuel pump will recirculate the DP back to the clear plastic bottle, using only DP, which is, after all, the whole point.
11. Make sure all your fittings are secure. Don't mind the air in the lines, your pump can handle it. Trust me. The advantage of this system is that while in the car you can view the clear lines. As the fuel heats up, you will see little bubbles in the clear lines, don't worry, it will all hold together.
12. Start the car, watch as the fuel in the lines goes from clear to red.
13. Get out of car and check system for leaks. There should be none.
14. Get back in car and rev engine, from idle all the way to redline. Vary engine speeds. Don't be afraid, trust me. Make sure you do this in a well-ventilated garage or preferably outside, where the car will able to cool itself.
15. Get out periodically to check on the level of DP remaining. When it gets to about 1 1/2 inches left, get in the car, give it one last college try. When you see a steady stream of bubbles in the supply line, shut the engine down.
16. Reassemble your fuel lines. Remember, a little air is no problem.
17. Start the car and check for leaks.
18. Pour left over DP in the tank.
19. Have a beer.
Parts:
1 can of Lubro Moly Diesel Purge:
1 Fram Fuel Filter, part number on box (from Napa or Murray's), 10 feet of 5/16 ID plastic tubing (Home Depot) and 1 packet of 5/16" vacuum fittings:
1 20oz (at least) empty pop or water bottle (I used a 24 oz. one).
Steps:
1. Cut 3 lengths of plastic tubing, one 22" long, one 8" and one 12" long.
2. Connect the 8" and 12" pieces of plastic tubing to the inline fuel filter.
3. Insert one vacuum fitting into the other end of the 8" piece (this will be connected to the fuel line from the filter to the pump).
4. Insert the other vacuum fitting into the 22" piece of tubing (this will go from the injection pump back to the plastic bottle containing the Diesel Purge).
It should look like this. If it doesn't you have no business working on your car, sell it and buy a Honda.
5. Get your plastic bottle, insert your hoses and stick it between your washer fluid resevoir and the intake pipe.
6. Make sure your hoses are long enough.
7. Remove the bottle and fill it with the Diesel Purge. I have no idea if the DP will eat through the bottle or the tubing, but work quickly but carefully just to be sure.
Precautions: the DP will get hot as it recirculates through the pump, making the tubing more pliable and prone to leaks. It will not leak however, trust me.
8. With the bottle filled and your tubes inserted TO THE BOTTOM OF THE BOTTLE, remove the fuel line which goes from the filter to the injection pump.
You should have something like this, if you don't, go get that Honda, ASAP.
9. I found it helpful to 'prime' the inline filter by sucking some DP through the line so as to minimize the amount of air the pump would have to deal with. Do not get any in your mouth, it tastes horrible. Trust me. Remove the clamp securing the fuel line from the filter to the pump and with your thumb over the clear tube (which should be filled with DP if you primed it properly) quickly insert the clear line with the vacuum fitting into the fuel supply line.
10. Do the same with the return line (which goes from the injector pump back to the fuel filter). The fuel pump will recirculate the DP back to the clear plastic bottle, using only DP, which is, after all, the whole point.
11. Make sure all your fittings are secure. Don't mind the air in the lines, your pump can handle it. Trust me. The advantage of this system is that while in the car you can view the clear lines. As the fuel heats up, you will see little bubbles in the clear lines, don't worry, it will all hold together.
12. Start the car, watch as the fuel in the lines goes from clear to red.
13. Get out of car and check system for leaks. There should be none.
14. Get back in car and rev engine, from idle all the way to redline. Vary engine speeds. Don't be afraid, trust me. Make sure you do this in a well-ventilated garage or preferably outside, where the car will able to cool itself.
15. Get out periodically to check on the level of DP remaining. When it gets to about 1 1/2 inches left, get in the car, give it one last college try. When you see a steady stream of bubbles in the supply line, shut the engine down.
16. Reassemble your fuel lines. Remember, a little air is no problem.
17. Start the car and check for leaks.
18. Pour left over DP in the tank.
19. Have a beer.
