gribs Posted July 28, 2014 Author Share Posted July 28, 2014 OEM alternator, got it installed at PIA. Kicker is I just moved to north carolina a few weeks ago. Battery's good, reading 12v even after not running for a couple weeks. I'll probably get around to checking the fuel pressure this week. Link to comment Share on other sites More sharing options...
Max Capacity Posted July 28, 2014 Share Posted July 28, 2014 If the car hasn't been started in a while there may be no fuel pressure left in the lines. If it sprays out as you try to remove the line from the shock tower you know the pump is fine. If it just drips out...you may have found the problem. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
finse Posted July 28, 2014 Share Posted July 28, 2014 In order for Max Capacity's method to work, you need to turn the car to the on position (gauge sweep) and allow the fuel pump to (try) to pressurize the system prior to pulling the supply line. Turn the key off before pulling that line. FWIW $20 for a fuel pressure tester is money well spent. Link to comment Share on other sites More sharing options...
Max Capacity Posted July 28, 2014 Share Posted July 28, 2014 Yes, the gauge is nice to show you the pressure while the engine is running. If it's very very quiet you may here the fuel prime when the key is turned to On. The old Civic was loud enough. But I don't think I've ever heard the Legacy's. I'm just tiring to come up with free options. If you buy a gauge, do you know how to install it with teflon pipe tape ? 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
Tehnation Posted July 29, 2014 Share Posted July 29, 2014 I had a problem very similar, it was the fuel pressure regulator. Get a pressure tester, tap into fuel feed line, test pressure according to vacation pixs. The fpr's on these cars have always been known to cause this problem! Link to comment Share on other sites More sharing options...
Tehnation Posted July 29, 2014 Share Posted July 29, 2014 The fpr is broken into several parts, you can get the full assembly which is like $250 or just the pressure regulator itself for like $75. I listed the part number somewhere on the site. Link to comment Share on other sites More sharing options...
gribs Posted July 30, 2014 Author Share Posted July 30, 2014 Picking up a fuel pressure gauge today, we'll see what happens after that. Link to comment Share on other sites More sharing options...
gribs Posted July 30, 2014 Author Share Posted July 30, 2014 I'm handy with teflon tape, just used to working on marine diesels not car engines Link to comment Share on other sites More sharing options...
Tehnation Posted July 30, 2014 Share Posted July 30, 2014 http://www.harborfreight.com/fuel-injection-pump-tester-92699.html If you have a store close by. Link to comment Share on other sites More sharing options...
gribs Posted August 18, 2014 Author Share Posted August 18, 2014 Update. Short version, threw in the towel and had it towed to local napa shop. Fuel pump checked out, there was fuel on the injectors and they were sparking fine. Timing belt is still lined up properly, but when they ran a compression test they said it was only around 100psi. That's definitely low, but it's also a stone cold engine. Is that still low enough to cause total failure to run? Apparently there's a shop around here that's good with subies, and getting taken there in the morning. Link to comment Share on other sites More sharing options...
Tehnation Posted August 19, 2014 Share Posted August 19, 2014 When my fpr was on its way out, I tested the fuel pressure and it was correct. Thats why the fpr is a pita to troubleshoot. Not sure if there is a better way to test it other than swapping with a used one. Link to comment Share on other sites More sharing options...
Tehnation Posted August 19, 2014 Share Posted August 19, 2014 http://legacygt.com/forums/showthread.php/bad-fpri-137988.html Post #5 "My FPR went. it takes about 20 mins to take it out and test it (not a super accurate test, but I could blow through mine, which is obviously not going to hold pressure for long). I ordered a new one from Fredbeans, stuck it in, and all was 100% after that." Thats what I did! I like to buy a bunch of new parts until the problem goes away, I figure its cheaper than paying a mechanic to do the same! Link to comment Share on other sites More sharing options...
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