Question about 1997 Buick Park Avenue

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How much fuel pressure does it need to start engine

Checked fuel pressure,it has 50psi

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50 psi is ample to start an engine. You will need spark and compression as well . Check immobiliser operation. Check that the cam shaft is turning (timing belt) Check for spark at a plug HT lead

Posted on Nov 22, 2014

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Posted on Jan 02, 2017

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My 320d bmw,2000 model suddenly cuts off whilst dtiving,what could be the problem


Sounds like you might have a bad fuel pump. You need to hook a fuel pressure gage up the the fuel rail located near the injectors to see if you are getting proper pressure. You should be getting somewhere close to 50psi. If you are not getting 50psi, I would recommend changing your fuel pump. It is common for fuel pumps to fail on your model of car

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Does it try to start by using starting fluid in the intake ?
I'm fairly sure fuel pressure should be 55-65 psi so 50 may be low.
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you need to check to things out,
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second have someone check the engine temp switch,to see what temp it is telling the computer your engine is.
if it tells the computer your engine temp is 65 degrees,the computer will not push as much fuel to thru injectors,when your engine is cold the computer needs to know how rich to make it for cold starts

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1 Answer

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if you have checked for spark at the spark plug end of the wire and it was not an sporadic,then you need to check the fuel pressure at the fuel rail reed valve,it should be at least 50psi ti start an engine thru the injectors

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1 Answer

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Do a fuel pressure check, not sure what engine you have but a 4.3 liter needs at least 40-50psi to run normal.

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