Dual Fuel Pumps
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Joined: Mar 2003
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From: Auburn CA
1987 Mercedes 190E 2.6
Dual Fuel Pumps
I was wondering why does a 190E 2.6 have a dual fuel pump system? Also one of my pumps is out and I was wondering if I could just swap the pumps and if it would work or not.
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W201 2.6
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Joined: Mar 2016
Posts: 1,369
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From: SF Bay Area, CA
190E 2.6L 1989, 190E 2.6L 1988, BMW 535dXdrive 2014, BMW 428i 2015
Yes, you need to replace both (in pairs) even if only one fails because the second one failing is probably just around the corner.
Use a bosch pair and do not gamble with other brands, it is a critical component. Also make sure the pumps come with the check valves.
- Cheers!
Use a bosch pair and do not gamble with other brands, it is a critical component. Also make sure the pumps come with the check valves.
- Cheers!
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Joined: Feb 2020
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1991 190E 2.3
I never realized that the 2.6 has dual fuel pumps because my 2.3 only has 1 fuel pump. I wonder what the logic behind that is? I've actually never been around any car that had 2 fuel pumps. Interesting.
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Joined: Mar 2016
Posts: 1,369
Likes: 195
From: SF Bay Area, CA
190E 2.6L 1989, 190E 2.6L 1988, BMW 535dXdrive 2014, BMW 428i 2015
Any engine larger than 2.3L seems to have gotten the dual pumps (in series, not parallel) 190fan. Probably has to do with fuel flow and making sure the fuel pressure can be maintained with the increased flow.
Most likely overdesigned by Benz for the 2.6 because they wanted to keep the 3.0 and 2.6 parts the same (because they both went into the W124's). They must have had a reason and it may not be just engineering for the 2.6L.
Most likely overdesigned by Benz for the 2.6 because they wanted to keep the 3.0 and 2.6 parts the same (because they both went into the W124's). They must have had a reason and it may not be just engineering for the 2.6L.
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MBWorld Fanatic!
Joined: Feb 2020
Posts: 1,995
Likes: 394
1991 190E 2.3
Any engine larger than 2.3L seems to have gotten the dual pumps (in series, not parallel) 190fan. Probably has to do with fuel flow and making sure the fuel pressure can be maintained with the increased flow.
Most likely overdesigned by Benz for the 2.6 because they wanted to keep the 3.0 and 2.6 parts the same (because they both went into the W124's). They must have had a reason and it may not be just engineering for the 2.6L.
Most likely overdesigned by Benz for the 2.6 because they wanted to keep the 3.0 and 2.6 parts the same (because they both went into the W124's). They must have had a reason and it may not be just engineering for the 2.6L.
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