Perkins 4.108 Fuel Line Replacement

  • June 30, 2013 4:21 AM
    Message # 1330072
    I'm wondering if anyone has tackled the problem of replacing the injector fuel lines on their 4.108. My boat has been relaunched in preparation to heading for the Bahamas with my daughter and granddaughter (who are have already flown in from Denver and waiting impatiently).

    Everything was going fairly smoothly, UNTIL I attempted to loosen the fittings on the aft end of the fuel line to bleed the lines. It seems that my rusted lines and fittings have seen their day, even though they were cleaned and repainted. As I began to loosen them, the line nearest the aft-most injector cracked and is now leaking.

    If you've tackled the problem of replacing the lines, where did you find the new lines? And what did the project set you back in time and money? I'm am really in a crunch to get this done NOW.

    Thanks for any feedback.

    Jack Webb
  • June 30, 2013 6:46 AM
    Reply # 1330110 on 1330072
    Deleted user

     Jack - We replaced the low pressure feed lines on our W32, they can be a challenge to snake in.  It sounds as though you are going to replace the high pressure lines?  We got the lines from TAD (Trans Atlantic Diesels)
    No problem identifying and receiving the correct part. Their parts folks were pretty good.  I suggest that you order a few extra sealing washers, good to have some spares.  I don't recall the cost of the lines, and it wouldn't be relevant as it was several years ago.


    Last modified: June 30, 2013 11:29 AM | Anonymous member (Administrator)
  • June 30, 2013 11:34 AM
    Reply # 1330185 on 1330072
    Deleted user

    I did this on the 4-107  back in 2000 and it was 150. Now it may be to 250.00 +/-  for all 4 e high pressure lines the return was 50.00 more with the banjo washers and new bolts.

    I used Golden state diesel (510) 465-1093 back 10 years ago.   The older lady there is a A+++ gal, and knows the small diesels very well+++.

    They are here in CA BUT i AM SURE THEY SHIP.


    Hope this helps you out.
  • June 30, 2013 4:56 PM
    Reply # 1330312 on 1330072
    Thank you, Mike and Norm.

    At first, I thought these were the high pressure lines, but perhaps they are not. According to the manual (one of many), these is the "Atomiser Leak off Pipe". If I'm not mistaken, this is also called the "return pipe".

    After the last cylinder, there is a two-sided union. The break was on the 3/4" pipe coming off the last injector, which is now 1/4", which is not long enough to attach the connector.

    Since there are differences between years, I should probably mention that, although my boat is a 1976, the engine is an 1987 Most that I see don't seem to have union between the Atomiser Leak off Pipe and the line back to the filter. I'll call Trans-Atlantic Diesel tomorrow morning and get an idea of the damages.

    Thanks again.

    Last modified: July 01, 2013 3:20 AM | Anonymous member
  • July 02, 2013 8:51 PM
    Reply # 1332074 on 1330072
    I lucked out! The yard manager had an older, non-running 4.108 in the yard and he let my rob the return line off of it. I had the old one off and the new one installed in about 10 minutes. After a quick bleed, the engine fired up in about 5 seconds of turning. Not too bad for an engine that had been sitting for 7 years and that I pulled out and refurbished 18 mo ago. To say that I was pleased would be an understatement! Everything else went smooth as silk... headed to the Bahamas first thing tomorrow morning.

  • July 02, 2013 9:44 PM
    Reply # 1332115 on 1330072
    Deleted user
    That's great news, very happy that it went so well.
    Now all you gotta do is slow down into sail mode.
    Happy sailing.
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