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Thread: Help! Thermostat housing impeded by fuel injector!

  1. #1
    Join Date
    Nov 2008
    Location
    Marietta, GA
    Posts
    169
    My Cars
    1989 BMW 635csi

    Help! Thermostat housing impeded by fuel injector!

    How do I remove this thing from the block without removing the forward fuel injector?? Was replacing the water pump and in taking off the front part of the thermostat housing, one of the four bolts had broken off and “welded” themselves into the back half of the housing. I removed the hoses, three nuts and went to pull....bam, aft side of housing hitting the injector. I don’t want to mess with the fuel rail, if I HAVE to remove it, I need a DIY write up with pictures that detail this, I am afraid I’m going to damage something. I want to remove the housing so I can gain a better vantage point by drilling out that damn little bolt that will not budge with WD-40, powerful vice grips (which just deform what’s left of that screw, now all rounded off), a 1/4” of this rusted bold is in the housing still, it’s the short one on the left side. So frustrated
    Last edited by Quantumleap; 03-12-2018 at 08:05 PM.

  2. #2
    Join Date
    Nov 2008
    Location
    Marietta, GA
    Posts
    169
    My Cars
    1989 BMW 635csi
    Found a video on YouTube....looks like this was the beginning of Bmw making it impossible for DIYers. I’m afraid I’m going to damage something getting that rail out


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  3. #3
    Join Date
    Feb 2003
    Location
    North Central Florida
    Posts
    1,282
    My Cars
    88m5,2015 Silverado
    IIRC , just bite the bullet and replace the injector seals while you have them out...I know a pain. Be careful removing the injector clips as it is easy to break the injector connector pieces. Post a picture, I can't recall if the late 3.5 engines had the later easy to remove clips. Crap, IIRC, they have the injection connectors inside that dang plastic covered piece ?

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