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Wales
by Joske Vermeule, September 1
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Forums39
Topics49,896
Posts837,951
Members9,597
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Most Online1,063
Jun 14th, 2026
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Joined: Jan 2015
Posts: 245 Likes: 5
L - Learner Plates On
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OP
L - Learner Plates On
Joined: Jan 2015
Posts: 245 Likes: 5 |
Just having got to 45,000 miles I thought it might be time to change the fuel filter.. Checking the fuel pump it appears that its the fuel return line that's filtered and not the pump output. It appears that the pump pumps the fuel up to the injectors under pressure and what isn't used is returned to the tank via the filter. So the questions is should I swap the connections on the fuel pump so the filter (I will use a new one) is on the outgoing pressure side which will offer better protection to the injectors (I do wonder if one is showing early signs of failure as it consistently runs about 1ms longer "open" than the other and the plugs both look the same. Im assuming it might be slightly blocked as has to be activated longer to keep the lambda happy. Any thoughts appreciated. Dave
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Joined: Jun 2012
Posts: 2,242 Likes: 72
Talk Morgan Expert
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Talk Morgan Expert
Joined: Jun 2012
Posts: 2,242 Likes: 72 |
Don’t transpose the fuel filter lines, the “filters” main job is as a pressure regulator to maintain 58 psi at the injectors. Filtering the fuel is secondary.
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Joined: Jan 2015
Posts: 245 Likes: 5
L - Learner Plates On
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OP
L - Learner Plates On
Joined: Jan 2015
Posts: 245 Likes: 5 |
Perfect many thanks - I hadn't thought about it regulating the pressure!
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Joined: Mar 2015
Posts: 215 Likes: 6
L - Learner Plates On
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L - Learner Plates On
Joined: Mar 2015
Posts: 215 Likes: 6 |
Just having got to 45,000 miles I thought it might be time to change the fuel filter.. Checking the fuel pump it appears that its the fuel return line that's filtered and not the pump output. It appears that the pump pumps the fuel up to the injectors under pressure and what isn't used is returned to the tank via the filter. So the questions is should I swap the connections on the fuel pump so the filter (I will use a new one) is on the outgoing pressure side which will offer better protection to the injectors (I do wonder if one is showing early signs of failure as it consistently runs about 1ms longer "open" than the other and the plugs both look the same. Im assuming it might be slightly blocked as has to be activated longer to keep the lambda happy. Any thoughts appreciated. Dave Emil's fuel system reverses the filter to be in line leading TO the injectors not after....nice correction to the system. Now an adjustable gauge maintains the 58PSI.
2018 S&S 110th Beetleback
1934 MX4 Beetleback (in restoration)
1965 Corvette Coupe 327/350
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Joined: Jun 2012
Posts: 2,242 Likes: 72
Talk Morgan Expert
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Talk Morgan Expert
Joined: Jun 2012
Posts: 2,242 Likes: 72 |
I think that Emil's deluxe fuel system fixes all the issues with the standard set up. A very similar result can be achieved with some off the shelf items for those that don't trust the postal service. There are two articles in the MTWC Bulletin magazine with an explanation on how the system operates, upgrades and inline fuel filters for the M3W, in January and July 2021 issues, available to club members online as well. https://www.mtwc.co.uk/full-list-of-articles/
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Joined: Feb 2019
Posts: 3,857 Likes: 2
Talk Morgan Addict
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Talk Morgan Addict
Joined: Feb 2019
Posts: 3,857 Likes: 2 |
I think that Emil's deluxe fuel system fixes all the issues with the standard set up. A very similar result can be achieved with some off the shelf items for those that don't trust the postal service. There are two articles in the MTWC Bulletin magazine with an explanation on how the system operates, upgrades and inline fuel filters for the M3W, in January and July 2021 issues, available to club members online as well. https://www.mtwc.co.uk/full-list-of-articles/+1
2019 M3W Sold and is now in Las Vegas enjoying the showgirls :-)
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Joined: Dec 2017
Posts: 2,223 Likes: 183
Talk Morgan Expert
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Talk Morgan Expert
Joined: Dec 2017
Posts: 2,223 Likes: 183 |
Emil has retired so availability of his systems will depend on what he has left on the shelf, if you want any of Emil's great products contact him pronto.
Bruce
1964 4/4 Series V Comp (Megan)
1994 +8 (Maurice) tis no more
2013 M3W (Olga)
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