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#1
09-13-2006, 11:29 PM
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Dirty Secondary Fuel Filter Photos
So, had noticed performance dropping off - not so much top end, but accelerating. RPM max flat road was decreasing - got to where it would not even run up past 4000 RPM - starting considering usual suspects, including ALDA, turbocharger, etc.
0-60 time was, I swear, over 20 seconds .... maybe closer to 30! gsxr and I discussed a few emails worth - I interconnected the two pressure lines going to the switchover valve - I got surging which surprise gsxr - I didn't know what to expect. So, started thinking about it and thought would replace the fuel filter. After changing filter (had previously changed the inline filter), my rough watch timing says more like about 12-13 seconds or so - a clearly noticeable increase, plus the RPM would roll right through 4000 to nearly 4400 and then shift quickly and firmly - I could get it to shift a bit earlier (603.970 doesn't have much power way up) ... I drained the old filter - it was very nearly black ... could see particles in solution - see container in background of photoe. I then chiseled open the filter to examine the paper element - it too was black (see second photo) - like you had poured old diesel crankcase oil on it ... grainy feeling, too. I have never pulled the fuel straiiner in the tank - I got an oring from Phil so will probably do that sometime when I get down to fumes in the tank ... With gsxr's email guidance am gonna hook up a Mityvac gauge and see what boost pressure am getting ... Thanks, gsxr and all the other great knowledgeable folks on this site - dear god, I love getting oily and greasy!
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George Stephenson 1991 350 SDL (200K and she ain't bent, yet) former 2002 E320 4Matic Wagon - good car former 1985 300 CD - great car former 1981 300 TD - good car former 1972 280 SEL - not so good car a couple of those diesel Rabbits ...40-45 mpg 
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#2
09-13-2006, 11:37 PM
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Here's mine after about 20k....it was filthy as well, I noticed a slight power increase with the new one in....and I think it may be time to change it again....
 
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-diesel is not just a fuel, its a way of life-  '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k) Last edited by whunter; 10-22-2010 at 12:48 PM.
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#3
09-13-2006, 11:40 PM
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pawoSD - your's looks almost new!
You can see through the fuel, even ... Hmmm - maybe I haven't changed the filter ... er, ever ... I swear, I thought I did!
__________________
George Stephenson 1991 350 SDL (200K and she ain't bent, yet) former 2002 E320 4Matic Wagon - good car former 1985 300 CD - great car former 1981 300 TD - good car former 1972 280 SEL - not so good car a couple of those diesel Rabbits ...40-45 mpg
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#5
09-14-2006, 12:56 AM
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Quote:
 ....but now I have a new variable speed one!
__________________
-diesel is not just a fuel, its a way of life- '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k)
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#6
09-14-2006, 11:13 AM
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Quote:
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