MPS reinstall |
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MPS reinstall |
87m491 |
May 7 2017, 02:29 PM
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#1
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Member Group: Members Posts: 275 Joined: 29-July 12 From: Portland, the original! Member No.: 14,731 Region Association: North East States |
Have just done the whole soft fuel system soup to nuts and I am buttoning up the engine compartment. I went to remount the MPS and the service port on the fuel rail is hitting the MPS body dead center.
(IMG:http://www.914world.com/bbs2/uploads_offsite/i723.photobucket.com-14731-1494188982.1.jpg) The fuel elbows to the injectors are new and not as pliable as the originals, though a fair bit shorter so any interference should have been less than with the originals. Any one else run into this? Tilting the rail forward or back does not seem to help much as this port hits right in the widest portion of the MPS. Now I know why them MPS only had the top bolt properly installed and sheet metal screws in the bottom two holes. |
BillC |
May 8 2017, 08:01 AM
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#2
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Senior Member Group: Members Posts: 547 Joined: 24-April 15 From: Silver Spring, MD Member No.: 18,667 Region Association: MidAtlantic Region |
87m491 --
According to the diagram here: http://www.pelicanparts.com/914/technical_...4_20FI_diag.htm , the '74 2.0 looks like it is supposed to have test ports on both fuel injector rails, with the driver's side test port feeding the cold start valve. Check both rails, and see if one of the test ports is off-center. If so, that may be the one that is supposed to go on the passenger side. I'm just guessing, since I've never been that deep into a '74's engine compartment. Also, when I re-did the fuel lines on my '73, the MPS bracket was held in with one machine screw on top and two sheet metal screws on the bottom. So yours may have been mounted correctly. Are there any wear marks on your MPS, where the test port plug may have been rubbing before? Edit: just had a thought: Are the new fuel injector elbows taller than the old ones you took off? Maybe you can trim the new elbows down to lower the rail and get the clearance you need. |
87m491 |
May 8 2017, 07:48 PM
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#3
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Member Group: Members Posts: 275 Joined: 29-July 12 From: Portland, the original! Member No.: 14,731 Region Association: North East States |
The fuel rails are symmetrical right and left. I'd be very surprised if the lower bolts were supposed to use sheet metal screws given the bronze bushing installed rubber grommets at each mount, but then the bottom 2 holes did not have a welded capture but either.
As mentioned I used even shorter fuel hose elbows than stock so that should not be the problem. I may just have the port removed and welded. I do not believe my MPS was properly installed with one machine screw and I'll fitting sheet metal screws (they came out by hand) 87m491 -- According to the diagram here: http://www.pelicanparts.com/914/technical_...4_20FI_diag.htm , the '74 2.0 looks like it is supposed to have test ports on both fuel injector rails, with the driver's side test port feeding the cold start valve. Check both rails, and see if one of the test ports is off-center. If so, that may be the one that is supposed to go on the passenger side. I'm just guessing, since I've never been that deep into a '74's engine compartment. Also, when I re-did the fuel lines on my '73, the MPS bracket was held in with one machine screw on top and two sheet metal screws on the bottom. So yours may have been mounted correctly. Are there any wear marks on your MPS, where the test port plug may have been rubbing before? Edit: just had a thought: Are the new fuel injector elbows taller than the old ones you took off? Maybe you can trim the new elbows down to lower the rail and get the clearance you need. |
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