I have a 91 Honda Accord. After the car sits for a week or so, it will not start. Engine turns over fine. If I open the bolt on the injector rail and turn the key on until fuel shoots out, the car starts fine after I tighten the rail bolt. I have already replaced the EFI module…this was an earlier problem several years ago. Any ideas?
What you are doing is letting the fuel system prime.
You may have a partially plugged fuel filter and/or a faulty fuel pressure regulator.
Thanks for the suggestions. I was going to replace the FPR, but I never thought of changing the fuel filter. I will replace both and let you know if this fixes the problem.
What you have is a faulty MAIN RELAY…It is working intermittently. When it doesnt work you will not get fuel pressure…This is by far the MOST COMMON Honda part failure I come across and that exists in Honda land…I am a bit of a specialist in Hondas…I have repaired literally HUNDREDS with perfect results. YOu need a new main relay and your problem will go away.
Thanks for the reply. I have already replaced the main module about 1 year ago. When it went bad the car would not start when it was hot. If you hit the lower dash next to the steering column, it would start…probably the bad solder joint. If I hit the dash now, it still will not start unless I prime the fuel/injector rail. I can pop out the main module and see if the solder joint is cracked. If there is no sign of cracking, would you still recommend replacement? What are your thoughts regarding the fuel pressure regulator?