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The BMW Range
3 Series
E36
Difficulty after refueling
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<blockquote data-quote="jarance" data-source="post: 519857" data-attributes="member: 21"><p>I am only guessing based on your description.</p><p></p><p>When you want to refill, you open the fuel cap. Tank de-pressurised. Petrol return back to tank</p><p>from the fuel line. Normally, this is prevented from happening by the check valve at the outlet</p><p>of the fuel pump.</p><p></p><p>To confirm it is the check valve problem, after filling petrol, turn on the ignition.</p><p>Do not immediately crank the engine. wait for about 10 to 15 seconds. </p><p>Crank the engine after 15 seconds. If it start without any problem, then it is your check</p><p>valve. </p><p>Note: the 15 seconds wait is to let the fuel pump to run and pressurise the fuel line to</p><p>the fuel in the engine compartment.</p><p></p><p>Another way to check is to connect a pressure gauge at the fuel rail and check the fuel pressure.</p></blockquote><p></p>
[QUOTE="jarance, post: 519857, member: 21"] I am only guessing based on your description. When you want to refill, you open the fuel cap. Tank de-pressurised. Petrol return back to tank from the fuel line. Normally, this is prevented from happening by the check valve at the outlet of the fuel pump. To confirm it is the check valve problem, after filling petrol, turn on the ignition. Do not immediately crank the engine. wait for about 10 to 15 seconds. Crank the engine after 15 seconds. If it start without any problem, then it is your check valve. Note: the 15 seconds wait is to let the fuel pump to run and pressurise the fuel line to the fuel in the engine compartment. Another way to check is to connect a pressure gauge at the fuel rail and check the fuel pressure. [/QUOTE]
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Difficulty after refueling
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