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88 Coupe
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 Posted: Thu Jan 18, 2007 11:08 pm |
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Joined: Sun Feb 15, 2004 3:25 am Posts: 3196 Images: 10 Location: Southern California
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zerepdivad wrote: ........ i'm not hearing the "humm" ........ Why didn't you just say that in the beginning? If you had, you would have been given something similar to the following: Using a "test light" or VOM, check the fuse and all the wiring/grounds, including the power at the pump. If the motor still does not work. Report back. If the motor does work, remove the fuel supply hose and attach an appropriate pressure gauge. Check to see if it pumps fuel at the correct pressure, both before and, after the regulator. Someone will post the correct pressure for your application. zerepdivad wrote: ........ i pull a spark plug wire and hold it near while cranking with a friend and see if i see spark ........ In that case, a ⅜", or longer spark, would suggest a sound ignition system. If you had pulled a plug, and did the same test with the wire attached to it, you would have verified that the spark occurred where it was needed. Whether, or not, it occurred at the time it was needed, is a different discussion. zerepdivad wrote: ........ I'll check the plugs as you suggested ........ We'll be waiting. zerepdivad wrote: ........ The fluid in the trans was also about a 3/4-1/2 quart low ........ That is an important clue. We should not have had to ask you a second time. zerepdivad wrote: ........ do you have any other questions that would help a diagnosis? ........
When I do, be assured, I will ask.
I am still searching your posts for anything I can work with.
Norm
_________________ Harry S. Truman wrote: When you have an efficient government, you have a dictatorship.
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Brando
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 Posted: Thu Jan 18, 2007 11:20 pm |
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Joined: Fri Jun 06, 2003 3:58 pm Posts: 3166 Images: 29 Location: Michigan, USA
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I wouldn't recommend spraying fuel all over the place as 87delta recommended. Rent or purchase a fuel pressure tester....they come in handy for situations like these.
Ignition On reading should be 40-47 PSI
Engine Idling should be 31-43 PSI
As for your fuel test port (Schrader valve).....not sure what you unscrewed and were pressing on back there....but my diagrams show nothing on the fuel rail there....except the bolts that hold it down to the intake manifold.
Anyways...I edited your picture to show the correct location of the test port:
TOC Admin
Brando
_________________ 1999 Oldsmobile Intrigue GLS 1987 Oldsmobile Delta 88 Royale
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zerepdivad
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 Posted: Thu Jan 18, 2007 11:23 pm |
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Joined: Tue Apr 18, 2006 11:03 pm Posts: 82 Location: Wisconsin
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Brando wrote: I wouldn't recommend spraying fuel all over the place as 87delta recommended. Rent or purchase a fuel pressure tester....they come in handy for situations like these. Ignition On reading should be 40-47 PSI Engine Idling should be 31-43 PSI As for your fuel test port (Schrader valve).....not sure what you unscrewed and were pressing on back there....but my diagrams show nothing on the fuel rail there....except the bolts that hold it down to the intake manifold. Anyways...I edited your picture to show the correct location of the test port:  TOC Admin Brando
What you circled is what i unscrewed and tested. Thanks a lot for the pressure #'s. I'll rent a fuel pressure tester from autozone tomorrow. Thank you very much for the reply.
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Brando
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 Posted: Thu Jan 18, 2007 11:57 pm |
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Joined: Fri Jun 06, 2003 3:58 pm Posts: 3166 Images: 29 Location: Michigan, USA
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I didn't circle anything....the square....
I thought the blob in the back was what you were referring too?
Or is that a spec of dust?
TOC Admin
Brando
_________________ 1999 Oldsmobile Intrigue GLS 1987 Oldsmobile Delta 88 Royale
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Brando
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 Posted: Fri Jan 19, 2007 1:04 am |
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Joined: Fri Jun 06, 2003 3:58 pm Posts: 3166 Images: 29 Location: Michigan, USA
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Anyways, so if what I put in the square is what you pushed in...and no fuel came out....your fuel pump obviously is not functioning.
I was going to say check the fuel pump relay, but....
Quote: When the key is first turned "ON," without the engine running, the ECM will turn the fuel pump relay "ON" for two seconds. This builds up the fuel pressure to normal operating pressure. If the engine is not started within two seconds, the ECM will shut the fuel pump "OFF" and wait until ignition reference pulses are present. As soon as the engine is cranked, the ECM turns the relay "ON," which powers the fuel pump.
As a back-up system to the fuel pump relay, the fuel pump can also be turned "ON" by the oil pressure switch. The oil pressure switch is a normally open switch which closes when oil pressure reaches about 28.0 kPa (4.0 psi). If the fuel pump relay fails, the oil pressure switch will power the fuel pump.
^ A faulty fuel pump relay can result in long cranking times, particularly if the engine is cold. ^ An inoperative fuel pump would cause a no start condition. A fuel pump which does not provide enough pressure can result in poor performance.
So a faulty relay wouldn't cause a no start issue, in fact it be the opposite of what you have.
Reading through your story it sounds like the fuel pump was on it's last leg.
As norm posted above, check the wiring...make sure you're actually getting power to the pump. If you are, and you don't hear it running (for 2 seconds) when you turn the ignition to the on position....then you'll need to drop the tank and change the pump.
TOC Admin
Brando
_________________ 1999 Oldsmobile Intrigue GLS 1987 Oldsmobile Delta 88 Royale
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zerepdivad
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 Posted: Fri Jan 19, 2007 1:35 am |
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Joined: Tue Apr 18, 2006 11:03 pm Posts: 82 Location: Wisconsin
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Brando wrote: I didn't circle anything....the square.... I thought the blob in the back was what you were referring too? Or is that a spec of dust?  TOC Admin Brando
haha i think that's actually snow and sorry SQUARE... haha. Yeah it seems like i'll be changing a fuel pump in the next few days in my driveway with snow on the ground since my other project, and engine hoist is hogging the garage for a while. Thanks for the replies. I'll likely be getting a fuel pump possibly from a friends skylark that he's junking but runs like a champ*although rusted beyond belief*. That depends on if autozone says the part numbers match up. Thanks again for all the replies.
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88 Coupe
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 Posted: Fri Jan 19, 2007 1:47 am |
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Joined: Sun Feb 15, 2004 3:25 am Posts: 3196 Images: 10 Location: Southern California
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zerepdivad wrote: ........ That depends on if autozone says the part numbers match up.
Good thinking.
If it's free, take the vacuum modulator. Put it in a sandwich bag, and store it in a safe place.
You never know when it might come in handy.
Norm
Last edited by 88 Coupe on Fri Jan 19, 2007 7:27 am, edited 1 time in total.
_________________ Harry S. Truman wrote: When you have an efficient government, you have a dictatorship.
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88 Coupe
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 Posted: Fri Jan 19, 2007 7:16 am |
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Joined: Sun Feb 15, 2004 3:25 am Posts: 3196 Images: 10 Location: Southern California
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Brando wrote: ........ As norm posted above ........
Did norm say to change the pump?
Norm
_________________ Harry S. Truman wrote: When you have an efficient government, you have a dictatorship.
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Brando
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 Posted: Fri Jan 19, 2007 4:24 pm |
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Joined: Fri Jun 06, 2003 3:58 pm Posts: 3166 Images: 29 Location: Michigan, USA
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88 Coupe wrote: Brando wrote: ........ As norm posted above ........ Did norm say to change the pump? Norm
Nope, he said to check the wiring. Which is what I was referring to, but they got connected to my advice. As I said, if he's getting power back there and the pump isn't running at all....well....
TOC Admin
Brando
_________________ 1999 Oldsmobile Intrigue GLS 1987 Oldsmobile Delta 88 Royale
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88 Coupe
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 Posted: Fri Jan 19, 2007 5:23 pm |
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Joined: Sun Feb 15, 2004 3:25 am Posts: 3196 Images: 10 Location: Southern California
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Brando wrote: ........ they got connected to my advice ........ As I thought. Thanks for the clarification. Quote: As I said, if he's getting power back there and the pump isn't running at all....well....
Then the pump can be removed, and "bench" tested.
Norm
_________________ Harry S. Truman wrote: When you have an efficient government, you have a dictatorship.
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zerepdivad
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 Posted: Tue Jan 23, 2007 1:09 am |
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Joined: Tue Apr 18, 2006 11:03 pm Posts: 82 Location: Wisconsin
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OK well theres another question i have........
ok on this picture next to the intake manifold and before the throttle assembly there are 2 vacuum hoses one which seems to be for cruise control and the one to the right pops off every now and then and splurts out gas when it pops out and connects to the front half on the fuel pressure regulator. I was wondering what would cause this or if it's an indication of something. The fuel pump was just replaced and i have fresh gas in it along with a new fuel filter as well. and i know for a fact that the old fuel pump was bad because it did not turn on at all and the new one humms as is should. now the car turns on but every now and then that "vacuum" seems to build up a lot of pressure and it pops off splurting out a bit of gas. Is this a possible indication of a faulty fuel pressure regulator.
thanks a lot
-dave-
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88delta88
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 Posted: Wed Jan 24, 2007 3:02 pm |
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Joined: Mon Jun 09, 2003 5:06 pm Posts: 2415 Images: 40 Location: Canada
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zerepdivad wrote: ..seems to build up a lot of pressure and it pops off splurting out a bit of gas.
Are you sure it is gas it squirts out? Or coolant? In the picture, are you speaking of the metal line with the screw on end, or the black plastic one with the rubber end?
_________________ "I know that you believe that you understood what you think I said, but I am not sure you realize that what you heard is not what I meant."
http://www.cardomain.com/id/88delta88
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