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Jun 14th, 2026
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Joined: Jul 2014
Posts: 26
Just Getting Started
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OP
Just Getting Started
Joined: Jul 2014
Posts: 26 |
Hi! I'm the new owner of a Morgan Plus8. Really enjoying the car but surprised how noisy the fuel pump is (appears to be the fuel pump) - pretty much a continuous wurrrr from start-up. Is this normal? Appreciated.....
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Joined: Aug 2013
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Talk Morgan Addict
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Talk Morgan Addict
Joined: Aug 2013
Posts: 3,383 Likes: 14 |
What year is your +8, what engine size? If its a GEMS car (4.0ltr from about 2001 onwards) they do make a noise that you can hear ignition on but not when running, unless you have VERY quiet pipes?
BR Colin
Who used to be a Spanner Juggler
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Joined: Jul 2014
Posts: 26
Just Getting Started
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OP
Just Getting Started
Joined: Jul 2014
Posts: 26 |
Thanks for the quick response - its a 3.9L 1997 (last before the long door model).
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Joined: Aug 2013
Posts: 3,383 Likes: 14
Talk Morgan Addict
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Talk Morgan Addict
Joined: Aug 2013
Posts: 3,383 Likes: 14 |
OK, its pre GEMS then, the pumps on those do make a noise and are external to the tank (behind the spare wheel), the thing is if you have never had one of these cars or this kind of fuel system before and are comparing it to old fashioned SU pumps the older electric pumps built up a line pressure and stopped, these later pumps are 'constant run', there are 2 lines, one is a supply line to the injectors (it goes to a fuel rail, think of a fuel manifold)and the other is a return line. In the fuel rail there is a Schrader valve (similar in appearance to a tyre valve) to check the line pressure, and a pressure regulator. A constant flow of fuel is used to (a) maintain the line pressure at a stable limit and (b) to allow the fuel in the fuel rail to be cooler for emissions regulations. They do fail and they do get noisy but if its just a constant whirring noise I would be inclined to say its OK. A good thing to do if your concerned is remove the spare wheel and locate the pump, put a piece of wood on it, 12" of broom handle is perfect, to act as a stethoscope, put your ear on the other end and have a listen, if it concerns you check it again in a few months and see if you think its getting louder. Do it ignition on without engine running to get a reference 'volume'. Hope that helps.
Last edited by Spanner Juggler; 22/08/14 11:26 AM.
BR Colin
Who used to be a Spanner Juggler
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Joined: Jul 2014
Posts: 26
Just Getting Started
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OP
Just Getting Started
Joined: Jul 2014
Posts: 26 |
Aha and indeed wow! It helps, it helps, it helps, it helps and it helps.... Likely related to the inexperienced. Will listen and watch but in the meantime - much appreciated!
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Joined: Aug 2011
Posts: 7,553 Likes: 88
Talk Morgan Guru
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Talk Morgan Guru
Joined: Aug 2011
Posts: 7,553 Likes: 88 |
Welcome to TM Kevin. 
Bud
4/4 "Stanley"
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Joined: Aug 2013
Posts: 3,383 Likes: 14
Talk Morgan Addict
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Talk Morgan Addict
Joined: Aug 2013
Posts: 3,383 Likes: 14 |
Aha and indeed wow! It helps, it helps, it helps, it helps and it helps.... Likely related to the inexperienced. Will listen and watch but in the meantime - much appreciated! No problem Kevin and welcome to TM
BR Colin
Who used to be a Spanner Juggler
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