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Diesel Engines A forum dedicated to diesel engines fitted to Volvo cars. See the first post in this forum for a list of the diesel engines. |
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Engine hesitates while acceleratingViews : 646 Replies : 1Users Viewing This Thread : |
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Sep 6th, 2018, 15:44 | #1 |
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Last Online: Jul 23rd, 2020 07:35
Join Date: Sep 2018
Location: Nuneaton
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Engine hesitates while accelerating
I've just come into possession of a 55reg S40 2 litre diesel with 97,000 miles on the clock.
It runs rough and when accelerating the car hesitates mainly between 1200 & 1800 rpm. Feels like a flat spot and can happen in any gear. Under hard acceleration the car pulls well. The issue is very noticeable when cold. Like running on kangaroo Juice!! When viewing the clear fuel pipe that exits the fuel filter to the fuel pump, air bubbles can be seen occasionally and are more noticeable when revving the engine. The outlet connection is currently being held onto the fuel filter with a cable tie! I'm thinking this is the main culprit and is letting air into the fuel system and causing the poor running? Could it be anything else? Where could I obtain a new pipe? Expensive? Btw, car starts fine and there are no error codes Last edited by Stew1099; Sep 6th, 2018 at 15:48. |
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