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#1
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Injectors life expectancy, durability
Can I get a few thoughts on how long injectors should typically last before they would need changing?
Thanks, Andy |
#2
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it really all depends on your engine, most people will probably tell you 150-200K. Pull them and have the pop tested....
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1985 300TD Turbo Euro-wagon 1979 280CE 225,200 miles 1985 300D Turbo 264,000 miles 1976 240D 190,000 miles 1979 300TD 220,000 GONE but not forgotten 1976 300D 195,300 miles 1983 300D Turbo 175,000 miles http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg |
#3
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Engine has 313k on it but i purchased the car at 196k and have no idea when the last time they were changed. If they get pulled, being this is my only commuter car presently, I'd need a set in there for driving, so most likely I'll just purchase a new set. Thoughts on price and where to source?
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#4
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They should be pulled and tested every 100k miles or so, they only need replaced/repaired if they fail to spray correct or pop at excessively low/high pressure.
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#5
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The better the fuel filter, the longer the life. Other than that, it's just a matter of how much fuel has gone through it, city miles use more fuel/mile than highway.
As FI mentioned, they should be tested periodically. My local guy cleans/tests/adjusts for IIRC $25/ea, then they're all balanced and known-good. Usually this is all that is needed, but they can wear out also. edit: Some fuel problems will also kill them, an example being fuel conditioners that suspend water in the fuel, can cause corrosion if water/fuel solution is left in injectors when parked (hint: buy good fuel and let the filter do its job of separating water).
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Gone to the dark side - Jeff |
#6
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Quote:
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1983 Benz 240D - 263,060 (Current) 1983 Cadillac DeVille - 130,000 (Scrapped - Stupid HT4100) 1992 Dodge B350 - 150,000 (Sold) 1984 Mazda 626 - 299,997 (Scrapped) |
#7
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I recently rebuilt my injectors with Monark nozzles and could not believe the difference it made in smoothness and power. It was not a difficult job at all. I did not have them pop tested as I don't have access to a test unit. I have a non-turbo 617.
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"Life is tough...it's even tougher if you're stupid." John Wayne Dave Pawleys Island, SC '79 300CD |
#8
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Dave's Diesel in Angola, IN, about 80miles from you (10miles from the MI line off I-69).
I believe that they have another store in IN also, just not sure where.
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Gone to the dark side - Jeff |
#9
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I rebuilt my injector nozzles with Monark. I also bought a hand-powered pop tester. The improvement in performance was very dramatic.
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1991 350SD (updated rods) Biodiesel B100 when I can find it. Dino when really cold outside |
#10
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If you run B100, you will have to clean / (rebuild if needed) your injectors every 50,000 miles. If you use homebrew B100, you might get 30,000 miles between clean / rebuild.
I don't do it, but word on the street is that with WVO and SVO you have to clean / rebuild injectors after 12,000 miles. Unless you installing new injector nozzles, you've got to have a pop tester and brass tools for cleaning. Save yourself some time and use anti-seize compound on the injectors.
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1991 350SD (updated rods) Biodiesel B100 when I can find it. Dino when really cold outside |
#11
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Two questions:
1. What are the signs of injector problems? 2. How often should the plastic inline filter and screw on filter be changed?
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-Typos courtesy of my mobile phone. |
#12
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1. Injector problems are indicated by decreased power and less-smooth acceleration.
2. If you use regular diesel fuel from a good source, you should change both filters at 12,000 miles. The primary filter is a screw-on thing like an oil filter. With alternative fuel I have had to change at 6,000 miles, and one secondary filter lasted about 20 miles before being destroyed by B100. Very dirty filters will significantly diminish performance. Replace them first. You will probably notice a big difference. If you still don't like the performance, then look into the injectors. You can buy new injector nozzles and a set of injector shims, and rent the pop tester from the rental section. With that many miles on your DT the injectors could be pretty ugly. Monark injectors are much better than the original ones.
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1991 350SD (updated rods) Biodiesel B100 when I can find it. Dino when really cold outside |
#13
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I believe that the fuel filters are a 36,000 mile item on the 603 maintenance chart.
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Gone to the dark side - Jeff |
#14
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FSM says pop test at half that.
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1987 300D (230,000 mi on a #14 head-watching the temp gauge and keeping the ghost in the machine) Raleigh NC - Home of deep fried sushi! |
#15
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Quote:
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Grumpy Old Diesel Owners Club group I no longer question authority, I annoy authority. More effect, less effort.... 1967 230-6 auto parts car. rust bucket. 1980 300D now parts car 800k miles 1984 300D 500k miles 1987 250td 160k miles English import 2001 jeep turbo diesel 130k miles 1998 jeep tdi ~ followed me home. Needs a turbo. 1968 Ford F750 truck. 6-354 diesel conversion. Other toys ~J.D.,Cat & GM ~ mainly earth moving |
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