FAULTY FUEL PUMP & FUEL PRESSURE REGULATOR - Nissan Forum
B14 95-99 chassis 1995-1999 Sentra and 1995-1998 200SX

 
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#1 Old Jul 23rd, 2005, 10:18 PM
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Question FAULTY FUEL PUMP & FUEL PRESSURE REGULATOR

What are the signs when any or both are going bad? I have a 1998 JDM sunny with the GA15DE engine which when started sounds like it is missing, after a while it will even out but whe under hard acceleration it starts to hold back and if i ease off the gas it pcks up. have changed plugs , wires , tps and checked the timing. It hunts sometimes in the 2400-2600rpm range. A mechanic told me the pump is going so the engine is leaning out when under pressure cause it is not getting enuf gas.
Need some advice asap.
thanx
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#2 Old Jul 24th, 2005, 01:26 PM
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Originally Posted by montikar
What are the signs when any or both are going bad? I have a 1998 JDM sunny with the GA15DE engine which when started sounds like it is missing, after a while it will even out but whe under hard acceleration it starts to hold back and if i ease off the gas it pcks up. have changed plugs , wires , tps and checked the timing. It hunts sometimes in the 2400-2600rpm range. A mechanic told me the pump is going so the engine is leaning out when under pressure cause it is not getting enuf gas.
Need some advice asap.
thanx
well u have to go for the basics for starters check furl filter if is clogged

check the sound of the fuel pump for something abnormal like

if it sounds rough or if is taking too long till fill up the lines


in my sentra the pump takes long to fill up the lines but never hessitates

i say check pressure on the lines or in the injectors that will give u an idea
#3 Old Jul 27th, 2005, 09:49 AM
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Quote:
Originally Posted by pester
well u have to go for the basics for starters check furl filter if is clogged

check the sound of the fuel pump for something abnormal like

if it sounds rough or if is taking too long till fill up the lines


in my sentra the pump takes long to fill up the lines but never hessitates

i say check pressure on the lines or in the injectors that will give u an idea
I agree change the Fuel filter first, this is what a blocked filter does, and its the cheapest.
Then move on to the more complicated stuff....
Good Luck....

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#4 Old Jul 13th, 2011, 04:13 PM
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What are the signs when any or both are going bad? I have a 1998 JDM sunny with the GA15DE engine which when started sounds like it is missing, after a while it will even out but whe under hard acceleration it starts to hold back and if i ease off the gas it pcks up. have changed plugs , wires , tps and checked the timing. It hunts sometimes in the 2400-2600rpm range. A mechanic told me the pump is going so the engine is leaning out when under pressure cause it is not getting enuf gas.
Need some advice asap.
thanx

i have the same problem with my 1999 nissan sentra. did changing the fuel pump fix the problem?
#5 Old Jan 9th, 2012, 11:41 AM
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What pressure is correct frm the pump?
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