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Fuel Pump/Fuel Question

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Old Feb 9, 2011 | 05:43 PM
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Default Fuel Pump/Fuel Question

The stock pump in my car went bad and I replaced it with a Walbro 255 and I put in a new fuel filter.

The car seems to be running fine, but I noticed it takes longer to start than it used to.

I was looking at some old threads about bad fuel pressure regulators, but I haven't noticed a fuel smell anywhere and the slower start has seemed consistent (cold, warm, hot starts). It also seems that priming it multiple times does not make it start any sooner.

Am I looking at a bad regulator, something electrical, or something else?

EDIT - It was a defective Walbro pump. Got another new one and it fixed the problems.

Last edited by M3xpress; Jul 15, 2011 at 12:00 PM.
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Old Feb 10, 2011 | 11:08 AM
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Considering your issue cropped up at the same time as installing the new pump, it could be a leaky check valve in the outlet of the new pump. You need to check your fuel pressure after you shut off the car and see if it starts bleeding off.
These videos can help you troubleshoot this and other issues:
http://www.aftermarketsuppliers.org/...s/default.aspx
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Old Feb 11, 2011 | 08:05 AM
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Also should check your hose connection to the pump outlet port.
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